Dell VNX5400 Virtual Provisioning for the VNX2 Series - Applied Technology
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- Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 1
White Paper Virtual Provisioning for the EMC VNX2 Series VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 Applied Technology Abstract This white paper discusses the benefits of Virtual Provisioning™ on the EMC® VNX2 series storage systems. It provides an - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 2
-to-date listing of EMC product names, see EMC Corporation Trademarks on EMC.com. Part Number H12204.6 EMC VNX2 Virtual Provisioning - Applied Technology 2 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 3
reclamation via Migration 40 Using thin LUNs with applications 41 Host-based File Systems 41 VMware ...42 EMC VNX2 Virtual Provisioning - Applied Technology 3 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 4
Hyper-V ...42 Appendix B: Low Space and Out of Space Handling Interoperability 43 Low Space Handling ...43 Out of Space Handling...45 EMC VNX2 Virtual Provisioning - Applied Technology 4 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 5
provisioning. Pools and pool LUNs are also the building blocks for advanced data services such as Fully Automated Storage Tiering for Virtual Pools (FAST™ VP), Compression, parameter settings. EMC VNX2 Virtual Provisioning - Applied Technology 5 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 6
that exceeds the physical capacity in a pool. Oversubscribing capacity is supported via thin LUNs. Pool LUN - A logical unit of storage created . They can be created automatically when using AVM or manually by the user. Subscribed capacity ― The total amount of VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 7
consuming administrative work of deciding how to allocate drive capacity. Instead, an arraybased mapping service builds and maintains all of the storage structures based on a few high-level user VNX2 Virtual Provisioning - Applied Technology 7 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 8
forecasts to be inflated. In some companies, an application administrator may monitor storage space and ask the EMC VNX2 Virtual Provisioning - Applied Technology 8 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 9
capacity is reported to the application but only the consumed capacity is allocated from the Storage Pool. EMC VNX2 Virtual Provisioning - Applied Technology 9 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 10
Groups: • Pools allow you to take advantage of advanced data services like FAST VP, Compression, and Deduplication • Multiple drive types can 16 drives • Because of the large number of drives supported in a pool, pool-based provisioning spreads workloads over many VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 11
, different types of drives can have different sizes. To maximize space utilization, however, all drives of a EMC VNX2 Virtual Provisioning - Applied Technology 11 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 12
monitored by using the Alerts tab in Unisphere. Using Unisphere's Event Monitor wizard, you can also select the option of receiving alerts through email, a paging service, or an SNMP trap. EMC VNX2 Virtual Provisioning - Applied Technology 12 VNX5200, VNX5400 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 13
a monitoring strategy is in place and you have the appropriate resources to expand the pool when EMC VNX2 Virtual Provisioning - Applied Technology 13 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 14
can create LUNs on it. For example, to create a 240-drive pool on a VNX5600, you need to create a pool with 120 drives and then expand the pool with another for Performance - Applied Best Practices white paper on EMC Online Support. The maximum pool and LUN limits for the available models are - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 15
pool/array VNX5200 15 121 125 1000 VNX5400 20 246 250 1000 VNX5600 40 496 500 1100 VNX5800 40 746 750 2100 VNX7600 60 Flash 2 Flash drives. The SAS Flash 3 drives do not support FAST VP and are only supported in homogeneous all Flash Storage Pools with drives of the same Flash - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 16
from • Thin, not Thin, or Block Deduplication enabled • User Capacity - Amount of host visible user capacity EMC VNX2 Virtual Provisioning - Applied Technology 16 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 17
for incoming writes. Figure 8 shows the 1.75 GB initial consumed capacity on a new 500 GB LUN. EMC VNX2 Virtual Provisioning - Applied Technology 17 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 18
thin, thick, and classic LUNs. Use pool-based thin LUNs for: • Applications with moderate performance requirements EMC VNX2 Virtual Provisioning - Applied Technology 18 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 19
based thick LUNs for: • Applications that require good performance • Taking advantage of advanced data services like FAST VP and VNX Snapshots • Storage assigned to VNX for File • Ease of . EMC VNX2 Virtual Provisioning - Applied Technology 19 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 20
Compression refer to the EMC VNX2 Deduplication and Compression white paper on EMC Online Support. File System and Checkpoint Storage Space Reclaim File System and Checkpoint Storage Space Reclaim Virtual Provisioning - Applied Technology 20 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 21
controlling of Space Reclaim is very similar. Figure 9 Reclaim Tabs within the File System Properties Window EMC VNX2 Virtual Provisioning - Applied Technology 21 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 22
At the very top of each tab is a Start and Stop control. These are manual controls for each of the reclaim operations. The user may start a reclaim process or stop a 10 GBs can be reclaimed. EMC VNX2 Virtual Provisioning - Applied Technology 22 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 23
others, please consult the VNX Command Line Interface Reference for File documentation, located on EMC Online Support. Low Space Handling for VNX File Low Space Handling for VNX File is a new feature Virtual Provisioning - Applied Technology 23 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 24
System is a destination image of a Replication Session, the user must manually start the Replication Session from the source system. To increase the the Low Space Threshold you must first determine the number of Data Movers installed on the system. To do so, issue the nas_server -list command via - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 25
0x0012 FRU ID = 0x000c To finish calculating the Low Space Threshold you multiply the number of Data Movers installed in the system by the Total main memory (MB) of one of the Data Movers. In this example Provisioning - Applied Technology 25 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 26
(Low Space) to indicate the checkpoints have been remounted Read-Only due to Low Space Handling. EMC VNX2 Virtual Provisioning - Applied Technology 26 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 27
File Systems, SnapSure Checkpoints, and resume any replication session stopped by Low Space Handling. In Unisphere, EMC VNX2 Virtual Provisioning - Applied Technology 27 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 28
. If the File System is a destination image of a Replication Session, the user must manually start the Replication Session from the source system. Figure 15 File Systems Mounts tab - Restore VNX2 Virtual Provisioning - Applied Technology 28 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 29
the VNX Command Line Interface Reference for File documentation, located on EMC Online Support. Out of Space Handling for VNX File With thin LUNs, the user destination image of a Replication Session, the user must manually start the Replication Session from the source system. EMC VNX2 Virtual - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 30
affected as it is mounted to a Virtual Data Mover which was created on the affected storage. EMC VNX2 Virtual Provisioning - Applied Technology 30 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 31
Checkpoint mounts to determine if Out of Space Handling has occurred. In the output of the EMC VNX2 Virtual Provisioning - Applied Technology 31 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 32
for the impacted File Systems are not shown. This is depicted in Figure 19. As the affected File Systems are unmounted, and the replication services for these File Systems are stopped, the Replication Sessions will not be shown until the File System is restored and the Data Mover is rebooted - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 33
restarted after the Data Mover is rebooted. The user will need to manually Stop and Start the Replication Sessions once the Data Mover has been is a destination image of a Replication Session, the user must manually start the Replication Session from the source system. For detailed information - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 34
, please consult the VNX Command Line Interface Reference for File documentation, located on EMC Online Support. Thick and Thin-enabled File Systems First, let's take a look at how thick File VNX2 Virtual Provisioning - Applied Technology 34 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 35
shows the Create File System page which can be used to create thin-enabled File Systems. EMC VNX2 Virtual Provisioning - Applied Technology 35 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 36
-extend when it reaches the 90% full threshold until it reaches the Maximum Capacity of 2 TB. EMC VNX2 Virtual Provisioning - Applied Technology 36 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 37
- How much of the currently allocated File System or Storage Pool for File capacity is used EMC VNX2 Virtual Provisioning - Applied Technology 37 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 38
more storage when you need it and helps avoid shortages that could impact users and applications. EMC VNX2 Virtual Provisioning - Applied Technology 38 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 39
, Replicator, MirrorView/S, MirrorView/A, SAN Copy Unisphere Analyzer References • EMC Online Support EMC Virtual Provisioning Release Notes EMC VNX Unified Best Practices for Performance - Applied Best Practices Guide EMC VNX2 FAST VP - A Detailed Review EMC VNX2 Deduplication and - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 40
SAN Copy pull operation on source volumes from other VNX, CLARiiON®, Symmetrix®, and supported thirdparty systems to a thin destination LUN on VNX. Figure 25 Space reclamation Space to EMC VNX2 Virtual Provisioning - Applied Technology 40 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 41
thin target LUN. Host Copy migrations for thin LUNs are supported on Windows, Linux, AIX, and Solaris hosts connected to supported with VNX Virtual Provisioning, refer to the EMC Support Matrix at on EMC Online Support. EMC VNX2 Virtual Provisioning - Applied Technology 41 VNX5200, VNX5400, VNX5600 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 42
will be thin-friendly. For more information on using Hyper-V Server, see the Using EMC CLARiiON with Microsoft Hyper-V Server white paper on EMC Online Support. EMC VNX2 Virtual Provisioning - Applied Technology 42 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 43
occurred, the operations will run. If issued before Low Space Handling occurred, the operations will run. EMC VNX2 Virtual Provisioning - Applied Technology 43 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 44
, the operations will run. If issued before Low Space No Handling occurred, the operations will fail. EMC VNX2 Virtual Provisioning - Applied Technology 44 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000 - Dell VNX5400 | Virtual Provisioning for the VNX2 Series - Applied Technology - Page 45
/Recall • NDMP o File System (Source)/SnapSure Checkpoint (Source)/Restore • VAAI VMDK Clone/Instant Provision/Snap • CAVA EMC VNX2 Virtual Provisioning - Applied Technology 45 VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000
White Paper
Abstract
This white paper discusses the benefits of Virtual Provisioning™
on the EMC® VNX2 series storage systems. It provides an
overview of this technology and describes how Virtual
Provisioning is implemented on the VNX2.
March 2016
Virtual Provisioning for the EMC VNX2 Series
VNX5200, VNX5400, VNX5600, VNX5800, VNX7600, & VNX8000
Applied Technology