000-451 IBM Midrange Storage Technical Support V3 Study Guide Prepared by Killexams.com IBM Dumps Experts Exam Questions Updated On : Click To Check Update

IBM Midrange Storage Technical Support V3 exam

Dell EMC SC5020 Storage Array overview | 000-451 Real Questions and VCE Practice Test

The Dell EMC SC5020 suits with Dell EMC's midrange storage portfolio and is purchasable in quite a number configurations including HDD, SSD and hybrid. Billed as a versatile workhorse for SMBs, the SC5020 does not drop features/performance to be fee aggressive. basically, when it comes to capabilities, the SC5020 is on par with the all-flash SC9000 we reviewed final 12 months. The variations are in most cases around accurate-end efficiency necessities, because the SC9000 has greater RAM and CPU in the controllers and as a result will have a tons bigger efficiency threshold. For its half, the SC5020 uses a 3U chassis with two sizzling-swappable controllers in an active/lively configuration and 30 2.5" pressure bays. The system can be elevated with extra drive shelfs to help an further 192 drives, topping the SC5020 out at over 2PB of maximum raw skill. 

To be attractive to the midrange market, arrays need to be flexible, efficient with good efficiency, and not spoil the bank. The SC5020 takes some of those ideas somewhat a long way. From a flexibility standpoint, users can have any place from 0-one hundred% flash storage and change as their needs and calls for trade. The SC5020 suits properly into the Dell EMC ecosystem, even if here's the path a client wants to circulation in or for shoppers that already have a number of different Dell EMC items under their wing. despite the fact, the largest selling aspect often is the array’s effectivity. The array makes use of automation and tiering to decrease expenses of performance and clever statistics discount to reduce the can charge of capacity. RAID will also be set at diverse tiers on the identical pressure to help healthy present recreation stages or extent guidelines. 

we now have already previewed some of our SC5020 efficiency statistics, as we posted in regards to the new SCOS 7.3 replace this previous summer time. while point updates continually are greater situated on bug fixes and minor performance improvements, 7.three brought with it a large efficiency bump. SCOS, of direction, also offers all of the commercial enterprise records capabilities anticipated like dedupe/compression, snapshots, replication, disbursed sparing, encryption and so on. there is numerous third-birthday party application help as well, together with VMware, Microsoft, IBM, OpenStack, Oracle, Symantec, Commvault, Foglight and Docker. when it comes to operational advantages, the SC5020 helps telephone home, on-line non-disruptive firmware updates and Dell EMC's CloudIQ analytics and monitoring tool. From a administration point of view, the SC5020 offers HTML5 tools Unisphere for SC and Unisphere principal (multi-array management), as well as Dell Storage manager (multi-array, multi-web page, go-platform administration).

during this evaluation, we revisit the records from the SCOS 7.3 update and put up the leisure of our performance statistics. The equipment under assessment is totally populated with write-intensive 800GB SSDs for a total capability of over 20TB uncooked. 

The Dell EMC SC5020 is a 3U storage array that includes probably the most elegant bezels the company is well-known for. under the bezel are the 30 scorching-swap, 2.5” power bays. On the right side of the machine are the energy indicator, status indicator, and identification button.  

Flipping round to the rear of the device, you'll simply see the two vigour components and enthusiasts on either facet. both storage controllers are stacked one atop the other in the middle. each and every controller incorporates an I/O care slot (that we populated with Fibre Channel cards), 4 iSCSI ports, two mini-SAS ports, a USB 2.0 port, a management port, and a serial port.

part of the replace to SCOS 7.3 brings Unisphere and all of its benefits to the SC collection. Unisphere is an HTML5 UI this is sleeker and more intuitive than the up to now used Dell Storage manager. 

Signing in brings clients to the abstract web page. as the identify implies, this page offers admins a run down of what is occurring on the SC5020. along the left facet are a few tabs (Storage, gadget, records Mobility, Monitoring, and reports) with their own sub-tabs. 

The Storage tab has a few sub-tabs including Volumes, Servers, Profiles, Disks, and Storage forms. below the Volumes sub-tab, admins can right now see their present volumes together with pertinent counsel about them, as well as the potential to create new volumes or delete existing ones. 

The Disks sub-tab lists out the disks in addition to total ability with allotted versus unallocated and has a graphical representation at the bottom. Admins can add extra disks and rebalance RAID through this sub-tab.

With the Storage kinds sub-tab, admins can effortlessly see tiers, volumes, in addition to drive studies. and that they can deploy storage between assigned and redundant.

The system tab has two sub-tabs: Hardware and Ports. The Hardware sub-tab gives admins a short overview of the system and its accessories and allows for users to drill down into each part via Storage center.

The Monitoring tab has three sub-tabs: signals, Logs, and performance. With the performance sub-tab we will effectively see the efficiency within a given latitude of time in each MB/s and IOPS on both the entrance or back conclusion. 

throughout all of our efficiency trying out, we leveraged a total of eight 16Gb FC ports related via a twin 16Gb FC switch fabric.

software Workload analysis

The application workload benchmarks for the Dell EMC SC5020 include the MySQL OLTP efficiency by means of SysBench and Microsoft SQL Server OLTP performance with a simulated TPC-C workload. In each scenario, we had the array configured with 30 800GB Write Intensive SSDs, the usage of volumes provisioned with a Tier 1 RAID10 storage profile. four volumes were then created, balanced throughout each storage controllers. In our checking out ambiance, this created a balanced load for our SQL and Sysbench workloads.

SQL Server performance

every SQL Server VM is configured with two vDisks: 100GB volume for boot and a 500GB quantity for the database and log data. From a device aid viewpoint, we configured each and every VM with sixteen vCPUs, 64GB of DRAM and leveraged the LSI good judgment SAS SCSI controller. while our Sysbench workloads confirmed up to now saturated the platform in both storage I/O and capability, the SQL verify is looking for latency efficiency.

This check uses SQL Server 2014 operating on windows Server 2012 R2 guest VMs, and is stressed out via Quest's Benchmark manufacturing unit for Databases. whereas our ordinary usage of this benchmark has been to verify large three,000-scale databases on local or shared storage, during this new release we center of attention on spreading out 4 1,500-scale databases evenly across the storage array.

SQL Server checking out Configuration (per VM)

SQL Server OLTP Benchmark factory LoadGen equipment

For SQL Server, the Dell EMC SC5020 hit an mixture transactional rating of 12,630.3 TPS with particular person VMs ranging from 3,156.6 TPS to three,158.5 TPS.

With SQL Server regular latency, the SC5020 had an aggregate rating of 7ms with particular person VMs starting from 6ms to 8ms. 

Sysbench performance

each Sysbench VM is configured with three vDisks: one for boot (~92GB), one with the pre-constructed database (~447GB), and the third for the database beneath verify (270GB). From a device-aid point of view, we configured every VM with sixteen vCPUs, 60GB of DRAM and leveraged the LSI common sense SAS SCSI controller. Load gen methods are Dell R740xd servers.

Dell PowerEdge R740xd Virtualized MySQL 8 node Cluster

Sysbench trying out Configuration (per VM)

For Sysbench, we tested the Dell EMC SC5020 with a couple of sets of VMs, together with 8, sixteen and 32 VMs. With 8VM we saw an mixture rating of 14,742 TPS, with 16VM we saw 18,384 TPS, and with 32VM the SC5020 was in a position to hit 26,723 TPS.

For Sysbench standard latency we saw combination rankings of 17.4ms for 8VM, 27.9ms for 16VM, and 38.6ms for 32VM.

looking at 99th percentile latency (worst-case state of affairs), the SC5020 become able to hit 33.6ms for 8VM, 55ms for 16VM, and 76.7ms for 32VM. 

VDBench Workload analysis

When it comes to benchmarking storage arrays, software checking out is ultimate, and synthetic checking out comes in 2nd place. while now not a perfect representation of precise workloads, artificial checks do support to baseline storage gadgets with a repeatability factor that makes it convenient to do apples-to-apples comparison between competing solutions. These workloads present various diverse trying out profiles starting from "four corners" checks, typical database switch measurement assessments, in addition to hint captures from different VDI environments. All of those tests leverage the normal vdBench workload generator, with a scripting engine to automate and capture results over a large compute checking out cluster. This allows for us to repeat the same workloads across a wide range of storage contraptions, including flash arrays and individual storage devices. On the array side, we use our cluster of Dell PowerEdge R740xd servers connected to eight Tier 1 RAID10 volumes provisioned from the Dell EMC SC5020.

Profiles:

With VDBench we are comparing the Dell EMC SC5020 to itself with updated software, SCOS 7.2 vs SCOS 7.three. For top 4K random study the 7.2 edition made it to roughly 275K IOPS at sub-millisecond latency while the 7.three went on to over 400K earlier than breaking 1ms. SCOS 7.2 peaked at 311,436 IOPS at 13.1ms latency. The SCOS 7.3 version peaked at about 450K IOPS and roughly 7ms latency. 

With 4K random write, the SCOS 7.2 edition ran below 1ms unless about 80K IOPS and peaked at 82,862 IOPS with 24.7ms latency. The SCOS 7.three had sub-millisecond latency performance until about 150K IOPS with a peak efficiency of about 167K IOPS and four.8ms latency. 

Sequential 4K performance from SCOS 7.three persisted to exhibit robust advancements in sequential 4K rear performance, enabling the unit to push out to 1.37M IOPS, whereas the one operating 7.2 measured 1.01M IOPS.

once again, in our write test measuring 4K sequential efficiency, we saw SCOS 7.3 push out past 500K IOPS, improving beyond the 326k IOPS measured from the older SCOS 7.2.

Switching over to sequential 64K benchmarks, we noticed the SCOS 7.3 edition slip in the back of the 7.2 in reads with the 7.three breaking 1ms at 100K IOPS or 6.2GB/s and peaking at roughly 163K IOPS or 10.2GB/s with 2.6ms latency, whereas the 7.2 made it except about 117K IOPS or 7.6GB/s under 1ms and peaked at 172,247 IOPS or 10.8GB/s with a latency of two.96ms. 

64K sequential write noticed the 7.three version leap out forward again by means of rather some margin. The SCOS 7.2 begun off beneath 1ms but without delay shot above it happening to height at fifty nine,408 IOPS or 3.7GB/s with a latency of 4.3ms. The 7.three version made it to just over 87K IOPS or 5.5GB/s earlier than going over 1ms of latency and went on to top at 96,868 IOPS or 6.1GB/s with a latency of two.6ms.

next, we moved on to our SQL workloads. The Dell EMC SC5020 SCOS 7.2 had sub-millisecond latency efficiency unless about 250K IOPS and peaked at 290,297 IOPS with a latency of 3.52ms. For the SCOS 7.3 version, the array made it to basically 400K IOPS with latency below 1ms and peaked at roughly 422K IOPS with a latency of about 2ms. 

With SQL 90-10, we noticed the 7.2 make it to about 220K IOPS earlier than breaking 1ms latency and going on to height at 272,154 IOPS with a latency of three.8ms. The 7.3 went over 350K IOPS and peaked at about 396K IOPS with a latency of two.4ms.

The SQL 80-20 noticed the 7.2 version spoil 1ms at about 185K IOPS with a peak rating of 242,928 IOPS and a latency of 4.2ms. The 7.3 edition had sub-millisecond latency performance except 327K IOPS or so and peaked at about 364K IOPS with a latency of two.5ms. 

moving on to the Oracle workloads, the SCOS 7.2 had sub-millisecond latency up to about 190K IOPS and peaked at 240,795 IOPS with a latency of 5.3ms. The SCOS 7.3 ran under 1ms until about 323K IOPS and peaked at about 360K IOPS with a latency of 3.3ms. 

With Oracle ninety-10, the SCOS 7.2 made it to about 225K IOPS earlier than breaking 1ms and peaked at 263,969 IOPS at 2.4ms latency. The SCOS 7.three made it to about 360K IOPS with sub-millisecond latency performance and peaked at 396,504 IOPS with a latency of 1.6ms.

For Oracle 80-20, the SCOS 7.2 had sub-millisecond latency performance except about 190K IOPS and peaked at 236,098 IOPS with a latency of two.7ms. The 7.three broke 1ms at roughly 330K IOPS and peaked at 363,286 IOPS with a latency of 1.8ms.

next, we converted to our VDI clone check, Full and Linked. For VDI Full Clone Boot, the Dell EMC SC5020 SCOS 7.2 went to about 210K IOPS before breaking 1ms and peaked at 269,042 IOPS with a latency of three.8ms. The 7.three version had sub-millisecond latency performance unless almost 350K IOPS and peaked at 377,413 IOPS with 2.7ms for latency. 

VDI FC initial Login noticed the 7.2 start with a huge spike in latency that came lower back down and went on to top at 116,758 IOPS with a latency of 6.8ms. The 7.three had sub-millisecond latency except simply earlier than 150K IOPS and peaked at roughly 206K IOPS with a latency of three.9ms. 

For VDI FC Monday Login, the 7.2 started off with more suitable efficiency staying beneath 1ms except about 60K IOPS and happening to top at 148,872 IOPS with a latency of three.1ms. The 7.three version had sub-millisecond latency efficiency except 150K IOPS and peaked at 239,271 IOPS with a latency of two.1ms. 

relocating on to VDI Linked Clone (LC), the boot look at various had the 7.2 go over 1ms at about 220K IOPS happening to peak at 266,623 IOPS having a latency of 1.9ms. The 7.three had sub-millisecond latency performance except simply under 270K IOPS going on to peak at 337,175 IOPS with a latency of 1.5ms. 

VDI LC preliminary Login had the 7.2 with latency beneath 1ms except simply over 70K IOPS with a peak of 132,284 IOPS and a latency of 1.9ms. The 7.3 did more desirable with sub-millisecond latency except about 120K IOPS and a peak efficiency of a hundred and seventy,197 IOPS with a latency of 1.5ms. 

at last, VDI LC Monday Login had the 7.2 with sub-millisecond latency except about 70K IOPS and a height of 150,273 IOPS and a latency of 3.4ms. The 7.3 stayed beneath 1ms except it hit 115K IOPS and peaked at 198,092 IOPS with a latency of 2.6ms. 

The Dell EMC SC5020 is likely one of the business’s midrange storage arrays that can be configured with HDDs, SSDs, and in a hybrid setup. The 3U SC5020 is designed for SMBs that want bigger degrees of performance and potential, with a max uncooked of 2PB with enlargement enclosures. The array offers HA with two lively/lively scorching-swappable controllers. The SC5020 can assist valued clientele lower charges and be greater effective via intelligent records reduction and RAID and storage tiering that makes it possible for it to respond to current needs. And the latest replace of SCOS to 7.three brings Unisphere to the array, a more intuitive UI with greater benefits. 

For our software workload analysis, we ran our SQL Server and Sysbench tests. With SQL Server, we saw an combination transactional rating of 12,630.2 TPS and an combination average latency of 7ms. For Sysbench, we validated a number of units of VMs including eight, 16, and 32VMs leading to TPS scores of 14,743, 18,385, and 26,723 respectively. regular latency, we noticed 17.4ms, 27.9ms and 38.6ms in 8, 16, and 32VMs. And our worst-case 99th percentile latency had handiest 33.6ms at 8VM, 55ms at 16VM, and 76.7ms at 32VM.

taking a look at VDBench efficiency, there turned into a rise throughout the board switching from SCOS 7.2 to 7.three. And in some circumstances, there became a extremely dramatic raise. as a substitute of rehashing the numbers above, we're going to analyze one of the vital percentages of advancements. For the 4K random, as soon as we upgraded we noticed a sixty two% raise in top performance on examine and a 102% boost in writes. For 4K sequential, we saw a 35.6% development in reads and a fifty three% development in writes. some other incredible efficiency improvements include 64K write (62% raise), SQL (forty four.8% increase), VDI FC preliminary Login (seventy seven.5% enhance), and VDI FC Monday Login (sixty two% boost).

We're certainly excited about the performance profile the all-flash SC5020 array offers; and that doesn't even aspect in that its pricing profile is very first rate too. it be easily spectacular to see what Dell EMC has executed with a "factor liberate" of the underlying SCOS. in addition, with SCOS 7.3, clients get access to a a great deal greater modern seem to be and believe with Unisphere, bringing SC storage management extra existing. whereas cohesion is absolutely an outstanding product for Dell EMC, it be clean to see the business's continued commitment to the SC storage family unit as well. We continue to have giant admire for the Dell EMC SC Storage family unit and chiefly, the SC5020.  

Dell EMC SC5020 Product web page

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