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1Z0-414 - Oracle ZFS Storage ZS3 Implementation Essentials - Dump Information

Vendor : Oracle
Exam Code : 1Z0-414
Exam Name : Oracle ZFS Storage ZS3 Implementation Essentials
Questions and Answers : 75 Q & A
Updated On : November 14, 2018
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1Z0-414 Oracle ZFS Storage ZS3 Implementation Essentials

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1Z0-414 exam Dumps Source : Oracle ZFS Storage ZS3 Implementation Essentials

Test Code : 1Z0-414
Test Name : Oracle ZFS Storage ZS3 Implementation Essentials
Vendor Name : Oracle
Q&A : 75 Real Questions

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Oracle Oracle ZFS Storage ZS3

Oracle Spotlights ZFS Storage equipment Adoption for Oracle Engineered programs Backup, Unveils ZS3 collection for Backup | killexams.com Real Questions and Pass4sure dumps

REDWOOD SHORES, CA--(Marketwired - Apr 28, 2014) - Oracle ( NYSE : ORCL )

information summary shoppers throughout a broad range of geographies and industries are adopting Oracle ZFS Storage appliances for Oracle Engineered techniques backup and recuperation. With the brand new ZS3 sequence for backup, Oracle ZFS Storage ZS3-BA, consumers have a pre-configured, pre-racked solution co-engineered with Oracle Database to supply excessive backup and repair efficiency with advanced effectivity to assist meet SLAs. besides excessive efficiency, ZS3-BA offers 5x decrease three-yr TCO over EMC records area 990(1) for Oracle Engineered techniques statistics protection. 

information statistics

  • Spotlighting demand for Oracle ZFS Storage home equipment for Engineered systems backup and healing, Oracle today introduced purchasers throughout the globe are adopting Oracle ZFS Storage appliances for Oracle Database backup environments.
  • Oracle's ZFS Storage enterprise posted potent yr-over-yr boom in fiscal Q3, demonstrating one other quarter of income momentum for the NAS product portfolio.
  • Oracle ZFS Storage provides wonderful cost for Oracle Database valued clientele with aspects now not purchasable to NetApp and EMC storage, together with Oracle intelligent Storage Protocol (OISP), and automated information Optimization (ADO) with Oracle Hybrid Columnar Compression.
  • shoppers cite the fantastic efficiency, effectivity, and value of Oracle's pleasing application Engineered Storage capabilities achieved via co-engineering Oracle hardware and software:
  • DB Schenker Rail "as the leading rail freight business in Europe, DB Schenker Rail requires speedy and professional access to substantial amounts of facts. Oracle Exadata Database computing device and the Oracle ZFS Storage equipment has been the right solution for us, enabling very speedy backup and restore times," talked about Dominic Marx, Head of business Intelligence Competence middle, DB Schenker Rail. "we have been impressed with excessive compression charges received the usage of Hybrid Columnar Compression with the Oracle Exadata and Oracle ZFS Storage appliance, and the incontrovertible fact that the compression stages are maintained by way of the ZFS Storage equipment, so we realize can charge and potential discounts on excellent of excessive performance."

    health center Alemão Oswaldo Cruz "Hospitals have very particular enterprise and IT requirements reminiscent of availability 24 hours a day, seven days per week. The Oracle ZFS Storage equipment changed into a natural alternative for Oracle Exadata Database laptop backup as a result of its efficient and big means storage, and it's already completely integrated with Oracle Exadata," noted Denis da Costa Rodrigues, supervisor of counsel expertise, clinic Alemão Oswaldo Cruz. "As a part of the solution, we also implemented Oracle lively records safeguard, which additional increases our information protection capabilities. The normal Oracle Exadata - ZFS Storage solution has no longer best stronger our capacity to deliver remarkable healthcare features, but additionally offers the high availability, agility and statistics protection to aid our operations."

    SunGard Availability services "Over the final five or six years, we've viewed our data double then triple in size, inserting precise stress on our infrastructure," noted Hal Moretto, Director, enterprise Infrastructure, SunGard Availability features. "using RMAN and Oracle's ZFS Storage appliance to backup the Oracle Exadata Database machine, we've got been capable of create encrypted backups and leverage the InfiniBand connectivity between ZFS and Exadata to enhance throughput, as well as replicating the backup to our offsite D/R area to a second ZFS storage equipment by way of storage replication, making that backup set available for offsite restoration if required."

  • additional consumers using Oracle ZFS Storage home equipment for Oracle Engineered techniques backup, inform their stories here.
  • Oracle's New ZS3 series for Backup complements Engineered programs extreme efficiency, Helps in the reduction of Backup and healing chance and value Over EMC

  • ZS3-BA helps make sure backup and recuperation SLAs are met by using scaling to 26 TB/hr for full backups and 17 TB/hr for full restores -- a 30 p.c raise for backups and 80 p.c boost for restores over the outdated generation.
  • ZS3-BA presents 5x reduce three-12 months TCO over EMC facts domain 990 devoid of the need for extra costly brokers, media servers and third-birthday party software required by opponents' systems, and it's purchasable in a HA configuration, not like EMC statistics domain products.
  • ZS3-BA also helps valued clientele meet backup window and recovery time ambitions by using delivering a completely optimized I/O stack for advanced database backup and healing performance via a massive cache-centric architecture (DRAM and flash), symmetric multiprocessing OS, and applied sciences comparable to OISP, Oracle Direct NFS (dNFS), remote Direct memory entry (RDMA), and InfiniBand.
  • ZS3-BA supports Hybrid Columnar Compression (HCC), that could compress Oracle Database records with the aid of 10-50x, allowing valued clientele to vastly reduce the volume of storage and bandwidth required. in addition, HCC compression is maintained all over the backup environment and for secondary processing including snaps and clones that can be used natively for building/check/QA. HCC is attainable handiest with Oracle storage.
  • Oracle ZFS Storage appliance is the handiest NAS product with direct InfiniBand connectivity to Oracle engineered programs' own InfiniBand backplanes, allowing purchasers to leverage the fastest bandwidth obtainable to deliver 40Gb/sec throughput speeds.
  • ZS3-BA is pre-configured and pre-racked for engineered systems integration to velocity deployment and cut back configuration risk. Oracle's engineered methods backup utility helps extra eliminate setting up guesswork to permit swift and professional setup. 
  • helping Quote

  • "extremely high pace streaming efficiency, ease-of-use, and Oracle Database co-engineering supply the ZFS Storage equipment a transparent aggressive knowledge in Oracle engineered programs backup and recovery use situations. clients international are adopting it as their backup answer of option," spoke of Scott Tracy, vice president, Storage software, Oracle. "the new ZS3-BA extra extends these capabilities whereas providing superior TCO for purchasers with demanding Oracle Database and Engineered programs information protection requirements."
  • assisting elements

    About Oracle Oracle engineers hardware and application to work together within the cloud and in your records middle. For extra assistance about Oracle ( NYSE : ORCL ), seek advice from www.oracle.com.

    emblems

    Oracle and Java are registered logos of Oracle and/or its affiliates. different names can be trademarks of their respective owners.

    Footnotes

    (1) Three-12 months TCO calculated using non-discounted listing prices from publicly attainable records. EMC records area DD990, 12xES30 - 15x2TB SATA 7.2K RPM (source: http://www.ironbow.com/Contracts/ContractVechicles/~/media/information/PDFs/Contracts/IronBow_CATALOG_IV.pdf) with EMC DD990 Replicator (source: http://www.pcsuperstore.com/items/11937588-EMC-LREP990.html) and EMC DD990 VTL contains 2 x PCiE cards, DP, DG (source: http://www.emc.com/microsites/stateofmsepl3658/pdf/EPL_Price_List_-_2013-09.pdf)


    Oracle Claims ZFS ZS3 Storage boots 16,000 VMs in under 7 minutes., outperforms NetApp’s FAS6000 | #vmworld | killexams.com Real Questions and Pass4sure dumps

    oracle-ZFS-Storage-ZS3-2For years, consumers have suggested that Oracle resisted embracing VMware, preferring to present purchasers Oracle virtual laptop (OVM) as an alternative. Realizing that a big component of its shoppers run VMware, Oracle has seemingly broadened its strategy to be extra inclusive and is targeting VMware installations.

    At this 12 months’s VMworld, Oracle corporation claimed its ZFS Storage ZS3 sequence became the only storage in-memory centric architecture on the floor. in keeping with Oracle, its equipment stumps NetApp, Inc.’s FAS6000, which boots 1,000 digital machines (VMs) in below 20 minutes. based on Oracle, its ZS3 series has the capability to boot at once out of memory 16,000 VMs in under seven minutes and 20,000 VMs in below 10 minutes, each at a listing rate of beneath $200,000. according to Oracle VP of Storage company community Steve Zivanic in an interview for theCUBE at VMworld, this is only one of dissimilar metrics in which Oracle’s ZFS Storage ZS3 series outperforms NetApp’s FAS6000.

    Zivanic shared that three years ago, Oracle was considered one of NetApp’s greatest customers worldwide. Oracle claims it done about 250 VMs per NetApp FAS6000, at which element the CPU would be pegged at one hundred percent and a different filer would ought to be bought and the system would repeat. Oracle instructed theCUBE that after it shifted from NetApp to the prior era ZFS Storage equipment, it carried out a nine to 1 VM consolidation ratio. Oracle claims it turned into in a position to obtain 2,300 VMS per particular person equipment, whereas best at a 33% CPU utilization expense. It additionally went from 11 NetApp filers and 500TB per storage admin to 38 ZFS home equipment and 5PB per storage admin, in one department in line with Zivanic. moreover, Oracle claims it saved eighty% in house and 74% in power.

    Zivanic additionally brought up that after it eliminated NetApp from its inner environments, it has due to the fact that grown its ZFS deployment to north of 200 Petabytes, powering Oracle Managed Cloud capabilities, IT creation environments and utility construction throughout deepest and public clouds. “ZFS Storage equipment is the data backbone of Oracle worldwide,” spoke of Zivanic.

    Zivanic also mentioned that Oracle databases day out when trying to put in writing to storage every 200 milliseconds. Zivanic stated that in case you bring together analytics information every 30 seconds there are one hundred fifty 200 millisecond home windows in your database to time out before a client would have any records to trouble shoot. Zivanic talked about that Oracle’s Dtrace Analytics software, a part of its ZFS Storage appliance, is greatest for VMware environments because it scans for statistics each 1 2nd and is integrated with Vsphere, enabling corporations to drill down to the VMDK degree, the NIC stage or the file level at speeds that can preserve tempo with Oracle Database. in line with Zivanic, NetApp has an analytical device that scans for facts every five minutes, whereas Oracle’s closest competitor has one that takes scans each 30 seconds. “That capacity in a 30-2nd window, you’ve obtained 150 alternatives for timing out in the event you haven’t executed and acquired any shred of statistics,” mentioned Zivanic.

    Zivanic stated that efficiency clever, both Oracle and NetApp published benchmark records that once in comparison, indicate the ZS3 storage finished an international checklist SPECsfs2008_NFS seven hundred microsecond software overall response time at a list expense of about $500,000. In contrast, the NetApp FAS6000 delivered a 1.fifty four millisecond software response time at listing price of close to $2 million. Zivanic cited that with NetApp, consumers would must pay 4 times extra to get efficiency that’s twice as gradual.

    right here’s the whole video of the Oracle interview.

    photograph credit: Oracle, ZFS Storage ZS3-2; https://www.oracle.com/storage/nas/zs3-2/index.html in view that you’re right here … … We’d like to inform you about our mission and the way that you could support us fulfill it. SiliconANGLE Media Inc.’s enterprise mannequin is in line with the intrinsic cost of the content, now not promoting. not like many on-line publications, we don’t have a paywall or run banner advertising, as a result of we wish to preserve our journalism open, without influence or the should chase site visitors.

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    if you just like the reporting, video interviews and different ad-free content material right here, please take a moment to try a sample of the video content material supported with the aid of our sponsors, tweet your help, and maintain coming again to SiliconANGLE.


    Oracle ZFS Storage appliance device overview | killexams.com Real Questions and Pass4sure dumps

    The Oracle ZFS Storage equipment is designed for mid-tier NAS environments. the line has two items, the ZS3-2 and ZS4-four, which have variable setup alternate options and a wide range of configurations. Oracle ZFS products help mechanical hard disk drives (HDDs) for records, and flash-based mostly strong-state drives (SSDs) for metadata and write acceleration.

    The Oracle ZFS Storage ZS3-2 matches up to 184 serial-attached SCSI (SAS) HDDs in capacities of 300 GB, 900 GB and 4 TB, for a maximum 736 TB of storage per single node. Drives are organized in 24-slot disk cabinets. in contrast to many NAS arrays, the Oracle ZFS Storage appliance doesn't support statistics SSDs. in its place, Oracle implemented a reminiscence skill of 1 TB per node, a study flash cache potential of 12.eight TB and 28 TB of write flash the use of write accelerators. Write accelerators are drives that store the contents of the ZFS Intent Log (ZIL). items assist 1.6 TB SSDs for the study cache and 300 GB SSDs for the write accelerators.

    The ZS3-2 supports as much as 4 write flash accelerators per disk shelf. it can have 4 or eight 10 Gigabit Ethernet (GbE) Base-T ports depending on configuration. It runs on as much as 4 eight-core Intel Xeon processors, and nodes will also be clustered as excessive as three.1 PB.

    Write operations to ZFS Storage drives are atomic, that means they're both performed absolutely or no longer at all.

    The Oracle ZFS Storage ZS4-four fits as much as 544 SAS HDDs in capacities of 900 GB and four TB, for a optimum 2.1 PB of storage per single node. Drives are arranged in 24-slot disk enclosures, with guide for up to four write accelerators per enclosure. The array can have up to eight 10 GbE Base-T ports, and runs on eight 15-core Intel Xeon processors and up to three TB of reminiscence. ZS4-four nodes will also be clustered as excessive as 6.9 PB.

    ZIL is an intent logging function designed to raise records availability on ZFS systems. Write operations to ZFS Storage drives are atomic, meaning they are both performed fully or not at all. A list of every operation -- customary because the "intent to operate" -- is logged to the ZIL before it happens. within the experience of a power failure, the equipment will examine the intent log to realize which operations have been in process when the failure befell and both revert or redo them. The ZIL is saved on flash-based SSDs, offering quicker write efficiency than if it became written to mechanical HDDs.

    moreover ZIL, the Oracle ZFS Storage equipment comprises application for storage administration, monitoring and encryption. The ZFS Storage utility has facets akin to skinny provisioning, monitoring and analytics, aid for iSCSI and Fibre Channel interconnects, and replication within native ZFS Storage clusters. additional application can be licensed one by one for remote replication, AES 256-/192-/128-bit encryption and database backup. The ZFS Storage equipment is tuned to work with Oracle databases, and its utility includes the Snap management Utility for Oracle Database and the Oracle enterprise supervisor Plug-in for Oracle ZFS Storage appliance.

    Pricing for the Oracle ZFS Storage equipment is dependent upon configuration. Pricing for the ZS3-2 mannequin tiers from $35,600 to $314,600, whereas the charge of the ZS4-four is between $a hundred thirty five,600 and $988,900. All ZFS Storage products come with a one-yr limited hardware guarantee with mobile support all the way through local company hours. Response times are tiered by using severity: Severity 1 has a four-hour response time, Severity 2 has an eight-hour response time and Severity three has a subsequent-enterprise-day response. An non-compulsory premier guarantee provides 24/7 technical guide and two-hour on-web page aid. Oracle's advanced guide equipment gives extra elements akin to 24/7 monitoring, gadget installation and help.


    1Z0-414 Oracle ZFS Storage ZS3 Implementation Essentials

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    1Z0-414 exam Dumps Source : Oracle ZFS Storage ZS3 Implementation Essentials

    Test Code : 1Z0-414
    Test Name : Oracle ZFS Storage ZS3 Implementation Essentials
    Vendor Name : Oracle
    Q&A : 75 Real Questions

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    Oracle ZFS Storage ZS3 Implementation Essentials

    Pass 4 sure 1Z0-414 dumps | Killexams.com 1Z0-414 real questions | [HOSTED-SITE]

    New Oracle ZFS Storage ZS3-BA Proves Ideal for Backing Up and Restoring Oracle’s Engineered Systems | killexams.com real questions and Pass4sure dumps

    Mar 3, 2014

    Protecting valuable business information has become more important than ever as data continues to grow by 40 to 50 percent per year, by some estimates. IT managers face a dilemma: how to complete backup and restore operations within shrinking windows of time while also reducing complexity, risk, and cost.

    When it comes to protecting data stored in Oracle’s engineered systems, the recently announced Oracle ZFS Storage ZS3  addresses these challenges with high-performance streaming throughput and tight integration with Oracle Database that is unavailable to competitors. Oracle ZFS Storage ZS3-BA complements the extreme performance of Oracle’s engineered systems, including Oracle Exadata Database Machine  and Oracle SuperCluster, and provides unique functionality by

  • Delivering direct high-speed InfiniBand connectivity
  • Maintaining Oracle Recovery Manager best practices without the need for risky and costly third-party backup software agents, servers, and skill-sets
  • Providing co-engineered solutions such as Oracle Hybrid Columnar Compression that reduce data and increase performance throughput
  • Pre-racked, pre-configured and leverages Oracle’s exclusive Engineered Systems Backup Utility to speed implementation
  • “Enterprises have shorter windows of time in which to complete backup and restore operations, which makes high performance essential,” says Kerstin Woods, Oracle Senior Principal Product Marketing Director. “At the same time, these operations must be easy to implement and reliable, to assure that essential data is readily available if a failure occurs. Oracle’s ZFS Storage ZS3 ensures that critical service-level agreements are met and streamlines operations for greater IT productivity.”

    In addition, Oracle ZFS Storage Appliances help reduce the risk of failed restores by enhancing availability with dual controllers, predictive self-healing features, and a fault-management architecture that automatically detects and diagnoses underlying problems. To ease management complexity, Oracle ZFS Storage Appliance’s DTrace Analytics feature provides an intuitive graphical user interface with which to monitor and quickly resolve performance bottlenecks during backup and restore operations.

    Oracle ZFS Storage ZS3 is equally effective for Oracle Database installations running on Oracle SPARC T5, M5, and M6 systems, as well as non-Oracle servers.

    Get more details about Oracle ZFS Storage Appliances and register for an Oracle webcast  that discusses backup and restore for Oracle’s engineered systems


    Oracle muscles way into seat atop the benchmark with hefty ZFS filer | killexams.com real questions and Pass4sure dumps

    Oracle has announced new cache-heavy ZFS appliances and has seized the SPC-2 benchmark top spot with one of them.

    Announced in early September, the third-generation ZFS appliance has most I/O served from DRAM cache, up to 2TB of it, and that makes these boxes stream data like a dragster sucking nitrous oxide.

    As before the ZFS Appliances are integrated with various Oracle database features, such as hybrid columnar compression, to make a better fist of storing Oracle SW data than other vendors' storage, Oracle claims.

    The O/S is, we are told an SMP design that is multi-core processor-aware and can provide up to 32GB/sec of sustained bandwidth. It has a Hybrid Storage Pool cache implementation, using DRAM, separate read and write flash caches, and disk, which delivers a 2x overall response time improvement compared to the previous ZFS Appliance generation.

    That generation has products such as the 7120, 7320 and 7420 introduced three years ago. Now we have the ZS3-2 and ZS3-4 products.

    Oracle ZS3-2

    Oracle ZS3-2

    The table below lists the main ZS3-2 and ZS3-4 configuration differences:

    Oracle ZS3 specifications

    Oracle ZS3 specs - click on chart to ease your eyes.

    The ZS3-2 is the entry-level box with up to 768TB capacity, 32 x 2.1GHz Xeon cores, and 512GB of DRAM. The larger ZS3-4 has 2TB of DRAM, 6TB to 3.5PB of capacity, and 80 x 2.4GHz Xeon cores - this is a fearsomely powerful filer. Both models can have up 12.8TB of flash cache.

    SPC-2 result

    The Storage PerformanceCouncil states:

    "SPC-2 consists of three distinct workloads designed to demonstrate the performance of a storage subsystem during the execution of business critical applications that require the large-scale, sequential movement of data."

    This is a benchmark focussed on streaming data and not random I/O. For that the SPC-1 benchmark is used.

    In the SPC-2 benchmark Oracle used a 2-node cluster with each node having dual ZS3-4 controllers, each with 1,024GB of cache. There were 384 x 300GB15K rpm disk drives in a disk mirroring set-up.

    The system scored 17,244.2 SPC-2 MB/sec overall with an SPC-2 price/performance of $22.53, which is based on list prices. It is the best result so far. The chart below plots SPC-2 MBPS numbers against price/performance, and shows the relative position of Oracle's ZS3-4 system compared to some other vendors' SPC-2 scores.

    Oracle ZS3-4 SPC-2 result

    Lower right position best. Click on chart for larger version.

    As the chart shows the Oracle system is a better SPC-2 performer than systems from EMC, HP, IBM and NetApp in terms of aggregate MB/sec and has the second lowest price performance. But the leading price/performer, NetApp's E5500 is far slower at streaming data than the ZS3-4 system Oracle used. Also the street price/performance numbers will be lower than list price/performance, depending on how good you are at getting a discount from your supplier. ®


    Hybrid storage arrays vs. all-flash arrays: A little flash or a lot? | killexams.com real questions and Pass4sure dumps

    Now that solid-state storage prices have dropped, more vendors offer all-flash arrays; but are they really much...

    better than hybrid storage arrays that mix flash with spinning disk?

    Comparing technology systems has traditionally relied on a "price-to-performance" analysis that tries to normalize system differences into an apples-to-apples comparison. With respect to storage, the advent of flash (solid-state) drives created a situation where IT buyers had to decide between price and performance. Flash storage offered blazing speeds, but at a very high cost per gigabyte ($/GB). At the other end of the spectrum, multi-terabyte hard disk drives (HDDs) are very economical, but with just around 75 raw IOPS per drive there better not be much work in the workload if that's where your data is located.

    HDDs have an advantage in $/GB, while flash has an advantage in $/IOPS.

    Hybrid arrays are intended to balance that equation. By adding a thin slice of flash storage to an array (i.e., 2% to 5% of total capacity), available IOPS may double and reduce read latency from 10+ milliseconds (ms) down to 3 ms to 5 ms. Even though the flash is expensive by itself, an overall 10% to 20% increase in array price to yield a 2X performance gain adds a lot of bang to the buck.

    As good as 3 ms to 5 ms latency sounds, for an increasing number of applications this variability is unacceptable. All-flash arrays can deliver sub-millisecond read latency with a guaranteed quality of service (QoS). There are no pre-fetch issues with flash and no variability between a cached read and a seek because on flash all I/Os are effectively cache reads. To put it in perspective, improving from 10 ms to 5 ms and then down to 0.5 ms is a 20X performance gain from HDD to all-flash on a latency basis. Although the difference between HDD prices and flash has narrowed considerably, most organizations still don't have the budget to deploy hundreds of terabytes of it. So, if deploying flash technology judiciously is important to an organization, knowing where the breakpoints between hybrid and all-flash are will help managers to make the best decision.

     Selecting hybrid and all-flash arrays Price/performance of hybrid storage arrays vs. all-flash arrays

    With price-to-performance being the major consideration in storage purchases, let's examine those two areas first. When it comes to cost, it's an industry truism that the purchase price is approximately 20% of the three-year cost of ownership for conventional HDD arrays. All-flash storage arrays break this model, however, partly because the purchase price goes up but operating costs go down. For example, Nimbus Data, a maker of all-flash arrays, estimates that its arrays use just 8 watts per TB, whereas HDD arrays may use 80 watts per TB. Moreover, Nimbus advises that users can fully populate a rack with usable space and get up to 90% utilization without performance degradation. This offers the potential for less floor space, cooling and power per TB of storage. High-capacity SATA drives offer gigabyte density, but won't meet even moderate IOPS or latency requirements. Given that flash is following the downward curve of cache memory, it's well worth the time to compare the total cost of ownership (TCO) of all-flash and hybrid storage systems.

    Hewlett-Packard (HP) Co. offers a different perspective on cost metrics: $/transaction. This metric is reflective of the true business cost, whereas $/GB and $/IOPS reflect purchase cost only. The $/transaction metric can be applied irrespective of media type, making a "non-denominational" comparison between techs. High-transaction workloads may actually see a lower $/transaction on all-flash arrays, whereas lower transaction environments may have a lower $/transaction on hybrid storage arrays. Either way, the result is calculable and definitive.

    Although it may be considered a "soft" cost, IT managers should factor in the value of the user's experience. Justifiably or not, if users perceive an application to be slow, they're more likely to have a negative perception of the IT organization or provider. It's a bit like the adage that when airline passengers find coffee stains on their tray tables, they question the quality of engine maintenance. It may therefore make sense to spend a few extra dollars to improve the user's perception of quality, especially in this era of IT outsourcing.

    Deduplication and compression are staples of nearly all storage systems and are frequently used to generate a $/GB figure that's much more favorable than those based on raw capacity. However, a cautionary note is in order. Increasingly, deduplication and single-instance storage (SIS) are taking place at the OS and application layers (i.e., VMware and SIS products for Exchange). Deduplication and compression can't occur twice on the same data, so storage managers may see less reduction than they anticipate as dedupe moves up the stack.

    For the purposes of commercial computing applications, storage performance has been all about IOPS until very recently. Perhaps this was because storage arrays inherently couldn't guarantee a specific QoS. All-flash arrays change that game, and SolidFire promotes its flash arrays squarely as storage QoS delivery vehicles. SolidFire allows IOPS to be provisioned on a per-volume basis with minimum, maximum and burst parameters. This throttling, along with dynamic adjustment, gives storage managers an additional mechanism for precisely delivering performance where it's needed. SolidFire also suggests that guaranteed QoS solves the "noisy neighbor" problem. For example, in a typical hybrid array, applications may compete for the flash tier of storage based on data access, resulting in oversubscribed flash and sub-optimal performance for all applications. Allocating IOPS to each application specifically solves this problem.

    Either or both?

    Established vendors have extended their traditional HDD products to embrace flash technology, often with hybrid devices and all-flash units. IBM, EMC Corp., NetApp Inc. and HP each offer an "all of the above" portfolio, though the specific implementations differ in important ways.

    IBM has extended its SAN Volume Controller (SVC) virtualization capability to manage "fit for purpose" all-flash devices such as the FlashSystem family or hybrid arrays in its XIV Storage System, Storwize and DS product lines. Because all devices can be managed through SVC, IBM extends the concept of hybrid to not only arrays, but the enterprise storage ecosystem. The intent is to allow ultimate flexibility in deploying both combinations of media, as well as combinations of arrays for scale and performance where needed.

    EMC's VMAX can virtualize hybrid and all-flash systems into a single ecosystem. Its VMAX, VNX, VNXe and Isilon products can also be configured as either hybrid or all-flash. Thus, users can enter at any point and evolve the solution as requirements change over time. In addition, the company's XtremIO arrays offer an all-flash solution from the ground up. Because it doesn't necessarily have to separate its hybrid and all-flash offerings, EMC views the market more horizontally. That is, it can offer traditional HDD arrays to the more budget-conscious buyer, hybrid configurations to those needing more performance and all-flash for situations that demand guaranteed QoS. Which product line will be recommended is determined by Reliability, Availability and Serviceability (RAS) requirements, with customers needing up to "six nines" of availability choosing VMAX, regardless of hybrid or all-flash provisioning.

    HP's 3PAR similarly offers everything from all-HDD to hybrid to flash configurations, but with some interesting wrinkles. HP offers both single-level cell and multi-level cell flash in the same arrays. The company recommends using the caching layer for writes and the flash tier for reads. This builds upon its Adaptive Optimization software that enables sub-LUN tiering. 3PAR's OS has a built-in clustered volume manager and virtual memory implementation that seamlessly virtualizes all media types, including new media.

    NetApp offers flash across its entire portfolio of FAS, V-series and E-series arrays; the EF540 is an all-flash system. NetApp usually recommends Flash Pools in its arrays with 1% to 2% of total capacity in flash. The company suggests that typical workloads, such as email, Web serving, app dev and collaboration are best served with hybrid configurations. In these use cases, workloads require less than 150,000 IOPS and can tolerate 3 ms to 5 ms of latency. For higher IOPS workloads or where QoS demands sub-ms latency, all-flash is prescribed.

    Oracle's ZFS Storage ZS3 are hybrid arrays, but the company says users may get up to a 90% data hit rate using its flash/DRAM architecture and sub-ms latency on those reads. Moreover, the company touts a significant cost advantage over competitive all-flash systems. Thus, users may get near all-flash performance at a hybrid price. Oracle's Hybrid Storage Pool dynamically and automatically moves data across DRAM, read-flash and write-flash to optimize array performance.

    RAID considerations

    Flash devices need to be protected by RAID just like any other storage media. Although most vendors support conventional RAID techniques for flash, RAID use can extract a price in capacity terms as well as processing overhead just as it does for HDDs. IBM addresses this issue with "variable stripe RAID" in its FlashSystem technology where RAID 5 is built into the flash controller. The result is parity-based RAID at line speed with the workload distributed across controllers. NetApp deploys Dynamic Disk Pools in its SANtricity (E-series) software that distributes data, parity and spare capacity across drives. NetApp claims this speeds recovery of failed drives while maintaining greater performance. Nimbus uses a RAID 5 algorithm designed to avoid the wear penalty associated with writing to flash.

    Some agreement on guidelines

    Despite differences in architectures, the vendors generally agree on some hybrid vs. all-flash guidelines. First, if sub-ms or guaranteed QoS is required, then all-flash arrays are the way to go. Or, in the case of Oracle, a hybrid that can deliver near all-flash performance. QoS application candidates include e-commerce where user experience is paramount and decision support analysis where time is of the essence. Second, if variable and unpredictable workloads are to be serviced, hybrid devices can often serve the need at a lower $/GB. Nimbus, SolidFire and other all-flash vendors may have different answers to this rule of thumb that do indeed have interesting price/performance characteristics and may have a $/IOPS advantage. Application candidates in this area include collaboration, email and anything where data lifecycle issues mean that not all data requires immediate access.



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    Oracle 1Z0-414 Exam (Oracle ZFS Storage ZS3 Implementation Essentials) Detailed Information



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