Dell VNX5600 VNX2 Multicore FAST Cache - A Detailed Review
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- Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 1
White Paper EMC VNX2 Multicore FAST Cache VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 A Detailed Review Abstract This white paper is an introduction to the EMC® Multicore FAST™ Cache technology in the VNX®2 storage - Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 2
States and/or other jurisdictions. All other trademarks used herein are the property of their respective owners. Part Number H12208.4 EMC VNX2 Multicore FAST Cache VNX5200, VNX5400, VNX5600, 2 VNX5800, VNX7600, & VNX8000 - A Detailed Review - Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 3
Cache 10 Multicore FAST Cache Cleaning 11 Multicore FAST Cache Flush 11 Management ...11 Unisphere ...12 NaviSecCLI ...16 Unisphere Analyzer ...16 Best Practices with Storage System Cache 23 EMC VNX2 Multicore FAST Cache VNX5200, VNX5400, VNX5600, 3 VNX5800, VNX7600, & VNX8000 - A Detailed Review - Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 4
of installed Flash drives. You can create Multicore FAST Cache, enable it on storage volumes, and manage it through drives. Subsequent I/O access to the same chunk is serviced at Flash-drive response times, thus boosting storage-system VNX5200, VNX5400, VNX5600, 4 VNX5800, VNX7600, & VNX8000 - - Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 5
in VNX2 storage systems. It assumes familiarity with VNX2 storage systems and EMC's management software. Terminology • Cache page-The smallest unit of allocation inside the Multicore FAST EMC VNX2 Multicore FAST Cache VNX5200, VNX5400, VNX5600, 5 VNX5800, VNX7600, & VNX8000 - A Detailed Review - Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 6
offers the best performance ($/IOPS) at the lowest cost ($/GB) with optimal power efficiency (IOPS/KWH). VNX OE for Block version 05.33.009.5.155 introduces In previous VNX OE for Block versions, only SAS Flash drives are supported. By utilizing SAS Flash 2 drives in Multicore FAST Cache, the TCO - Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 7
in the system, which will be configured in RAID 1 mirrored pairs. Once the enabler is installed, the system uses the following main components to process and execute Multicore FAST Cache: Policy Engine-Manages the flow of I/O through Multicore FAST Cache. When a chunk of data on a LUN is accessed - Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 8
application is first checked against the contents of Multicore Cache. If the I/O can be serviced from Multicore Cache, the I/O is completed. The Multicore FAST Cache Memory Map is not operation. EMC VNX2 Multicore FAST Cache VNX5200, VNX5400, VNX5600, 8 VNX5800, VNX7600, & VNX8000 - A Detailed Review - Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 9
write operation, and Write Cache is enabled on the system and LUN, Multicore Cache services the I/O and sends an acknowledgment to the host. This exchange happens whether or not this scenario. EMC VNX2 Multicore FAST Cache VNX5200, VNX5400, VNX5600, 9 VNX5800, VNX7600, & VNX8000 - A Detailed Review - Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 10
copied back to the HDDs. This statistic does not represent the amount of data currently contained within Multicore FAST Cache. EMC VNX2 Multicore FAST Cache VNX5200, VNX5400, VNX5600, 10 VNX5800, VNX7600, & VNX8000 - A Detailed Review - Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 11
, and monitor Multicore FAST Cache. Unisphere details can be found in the EMC Unisphere: Unified Storage Management Solution for the new VNX Series white paper available on EMC Online Support. The following sections discuss the parts of Unisphere and NaviSecCLI that pertain to Multicore FAST Cache - Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 12
in Unisphere has links on the right-hand task pane for System Properties and Manage Cache. Both these links open the System Properties window (Figure 4). To enable Cache dialog box (Figure 5). EMC VNX2 Multicore FAST Cache VNX5200, VNX5400, VNX5600, 12 VNX5800, VNX7600, & VNX8000 - A Detailed Review - Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 13
will be used for creating Multicore FAST Cache. You can choose the drives manually by selecting the Manual option. To change the size of Multicore FAST Cache after it is configured, Figure 7). EMC VNX2 Multicore FAST Cache VNX5200, VNX5400, VNX5600, 13 VNX5800, VNX7600, & VNX8000 - A Detailed Review - Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 14
already been created, use the Advanced tab in the Storage Pool Properties dialog box to enable Multicore FAST Cache (Figure 9). EMC VNX2 Multicore FAST Cache VNX5200, VNX5400, VNX5600, 14 VNX5800, VNX7600, & VNX8000 - A Detailed Review - Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 15
is displayed for every entry in the table. Figure 10. Multicore FAST Cache column on the LUN screen in Unisphere EMC VNX2 Multicore FAST Cache VNX5200, VNX5400, VNX5600, 15 VNX5800, VNX7600, & VNX8000 - A Detailed Review - Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 16
NaviSecCLI The management functions described in the previous section are also available with NaviSecCLI. Table 1 lists the Read Misses/s • FAST Cache Read Hit Ratio • FAST Cache Write Hits/s EMC VNX2 Multicore FAST Cache VNX5200, VNX5400, VNX5600, 16 VNX5800, VNX7600, & VNX8000 - A Detailed Review - Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 17
to create Multicore FAST Cache. You can also choose these drives manually to ensure that you distribute the Flash drives across back-end white paper available on EMC Online Support. Refer to applicationspecific white papers for FAST Cache VNX5200, VNX5400, VNX5600, 17 VNX5800, VNX7600, & VNX8000 - Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 18
and Multicore FAST Cache size. • Flash drives installed in vault drive locations cannot be used to create operations that were destined for the degraded group are now serviced by the remaining groups. Once the degraded group is VNX5200, VNX5400, VNX5600, 18 VNX5800, VNX7600, & VNX8000 - A - Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 19
References The following white papers are available on EMC Online Support: • EMC VNX Unified Best Practices For Performance • EMC Unified Storage System Fundamentals for Performance and Availability • EMC Unisphere: Unified Storage Management Solution For The VNX2 Series • EMC VNX2 FAST VP • Virtual - Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 20
Options Table 2. Multicore FAST Cache maximum configuration options with SAS FLASH drives Storage System Flash (SSD) Disk Capacity Maximum Multicore FAST Cache Capacity VNX5200 100 GB / 200 GB 300 GB (6 drives) / 600 GB (6 drives) VNX5400 100 GB / 200 GB 500 GB (10 drives) / 1 TB (10 drives - Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 21
VP white paper available on EMC Online Support. Table 4. Comparison between the FAST VP in scheduled or manually invoked relocation windows. From a TCO perspective, Multicore FAST Cache can service active data with fewer Flash drives, while FAST VNX5200, VNX5400, VNX5600, 21 VNX5800, VNX7600, & - Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 22
into the cache. After the 64KB chunk is promoted, a majority of I/O operations will be serviced from Multicore FAST Cache. This can result in less activity on the back-end LUNs, and HDDs. EMC VNX2 Multicore FAST Cache VNX5200, VNX5400, VNX5600, 22 VNX5800, VNX7600, & VNX8000 - A Detailed Review - Dell VNX5600 | VNX2 Multicore FAST Cache - A Detailed Review - Page 23
in all supported models, and In case of failure, replacement requires service by qualified personnel. Can scale to much Power failure Contents are volatile and cannot Contents are non-volatile withstand a power loss. and can withstand a power loss. EMC VNX2 Multicore FAST Cache VNX5200
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White Paper
Abstract
This white paper is an introduction to the EMC
®
Multicore FAST
™
Cache technology in the VNX
®
2 storage systems. It describes
implementation of the Multicore FAST
™
Cache feature and
provides details of using it with Unisphere
®
and NaviSecCLI.
Usage guidelines and major customer benefits are also
included.
March 2016
EMC VNX2 Multicore FAST Cache
VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000
A Detailed Review