Dell VNXe2 Configuring Storage Pools

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  • Dell VNXe2 | Configuring Storage Pools - Page 1
    EMC® VNXe® Series Version 3.1 Configuring Storage Pools 300-015-479 REV 02
  • Dell VNXe2 | Configuring Storage Pools - Page 2
    are the property of their respective owners. For the most up-to-date regulatory document for your product line, go to EMC Online Support (https://support.emc.com). EMC Corporation Hopkinton, Massachusetts 01748-9103 1-508-435-1000 In North America 1-866-464-7381 www.EMC.com 2 EMC VNXe Series
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    Enable scheduled data relocations at the system level 30 Modify the data relocation schedule 31 Stop a storage pool from participating in scheduled data relocations 31 Manually initiate or stop data relocations for a storage pool 31 EMC VNXe Series 3.1 Configuring Storage Pools 3
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    CONTENTS Chapter 5 Pause or resume data relocations for all storage pools 32 View storage pool tier information 32 View system level data relocation information 33 View data relocation information for a storage pool 33 Configuring storage pools using the CLI 35 Configure storage pools
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    CHAPTER 1 Introduction to storage pools l About storage pools 6 l Storage tiers...6 l Optimizing disk performance using the FAST Cache and FAST VP (physical deployments only 7 l Storage pool best practices 8 l RAID groups (physical deployments only 9 l Hot Spares (physical deployments only 13
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    associated with the physical disk type. l For virtual deployments, the storage tier is associated with the virtual disk's underlying characteristics and must be manually assigned. l For both types of deployments, if FAST VP is installed on the system, you can create tiered storage pools to optimize
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    performance disk Provides high, all-around performance with consistent response times, high throughput, and good bandwidth at a mid-level price point. Performance tier storage is appropriate for database resources accessed centrally through a network. RAID 5 (4 + 1). NL-SAS - Rotating capacity
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    Introduction to storage pools Table 2 Differences between the FAST Cache and FAST VP features (continued) FAST Cache Copies data from Hard Disk Drives (HDDs) to Flash disks when the data is accessed frequently. Adapts continuously to changes in workload. FAST VP Moves data between different
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    considerations EMC recommends that you leave free physical space in a pool to accommodate data services, as described in the following table. Table 3 Storage pool capacity considerations Service Snapshots FAST VP Snapshots and FAST VP together File systems Recommendation Maintain about 10% free
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    you can add a new tier with a different RAID type. The system supports RAID 5, 6, and 1/0 (also called RAID 10). RAID configurations Storage lose both the source and mirror of the same mirrored pair, you must immediately replace the disks and rebuild the array. l RAID 1/0 (1+1): A minimum of two
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    Introduction to storage pools Table 4 Supported RAID levels (continued) RAID level Description four-disk group to be present to operate. If a disk fails, it will reduce storage performance and should be replaced immediately. Data loss will not occur as a result of a single disk failure. l RAID 5
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    Introduction to storage pools Table 4 Supported RAID levels (continued) RAID level Description RAID 6 is cause data loss and render any storage in the RAID group unavailable until the failed disks are replaced and the data is restored. This may cause data loss since the last backup of the storage
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    a failed system disk that has user data. l A hot spare can be used to replace a failed or faulted disk in the FAST Cache. l When a hot spare swaps into and interoperability documentation on the support website for a listing of basic platform and component support for the storage system, including
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    Introduction to storage pools View spare disk details (physical deployments only) Procedure 1. Click Storage > Storage Configuration > Spare Disks. 2. View spare disk information in the following tabs: l General - Displays the spare disk's status, name, type, and capacity. For physical deployments,
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    CHAPTER 2 Configuring storage pools l Standard pool configuration using Quick Start mode (physical deployments only) ...16 l Configure storage pools using Quick Start mode (physical deployments only)....... 17 l About configuring custom storage pools for physical deployments 17 l Configure a custom
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    Performance Note For data that changes or is accessed frequently, Capacity pool storage can significantly lower performance, support fewer simultaneous read/operations, and support fewer overall users than Performance pool storage. SAS, RAID 5 SAS Flash VP, RAID 5 Provides enhanced performance
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    pool. l Enable the pool to use the FAST Cache, if the FAST Cache license is installed and the system has available SAS Flash disks to support the FAST Cache. Configure storage pools using Quick Start mode (physical deployments only) 17
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    Configuring storage pools Note Once you create a pool, you cannot reconfigure the pool's disks without deleting the storage resources configured in the pool and the pool itself. However, you can add disks to expand the pool. Configure a custom storage pool (physical deployments only) Procedure 1.
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    Configuring storage pools Create a storage pool for virtual deployments Procedure 1. Launch the Storage Pool Wizard in one of these ways: l Click Storage > Storage Configuration > Storage Pools, and then click Create. l In the Configuration Wizard, click Create Storage Pools in the Disk
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    Configuring storage pools deletion values are set by default. You cannot change this during the pool creation. If you clear both boxes, you disable automatic deletion for the pool, but you can still use an expiration value. 5. Click Apply. Expand a storage pool You expand a storage pool by adding
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    Configuring storage pools 3. Click the Utilization tab to view the following information: l Quantity of used space, snapshot size used, available space, and total space for the pool. l Subscription amount, which is the percentage of the pool's total space that has been requested by its associated
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    Configuring storage pools 22 EMC VNXe Series 3.1 Configuring Storage Pools
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    CHAPTER 3 Using the FAST Cache (physical deployments only) l About the FAST Cache 24 l FAST Cache best practices 25 l Create the FAST Cache 25 l Enable the FAST Cache for a storage pool 25 l View-system level FAST Cache information 26 l View pool-level FAST Cache information 26 l Delete the
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    Total Cost of Ownership (TCO) The FAST Cache reduces the number of disk spindles needed for a given level of performance and allows you to replace high performance disks with more economical options. This is possible because the load on back-end hard drives is reduced. Because the FAST Cache copies
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    Using the FAST Cache (physical deployments only) Note Deleting the FAST Cache can impact system performance and the performance of storage pools currently using the FAST Cache. The FAST Cache deletion process can take a long time, because it has to flush all of the cache data to the storage pool
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    Using the FAST Cache (physical deployments only) 3. Click the Settings tab. 4. Select Allow this pool to use the FAST Cache. 5. Click Apply. View-system level FAST Cache information Procedure 1. Click Storage > Storage Configuration > FAST Cache. 2. View information in the following tabs: l General
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    at the system level 30 l Modify the data relocation schedule 31 l Stop a storage pool from participating in scheduled data relocations 31 l Manually initiate or stop data relocations for a storage pool 31 l Pause or resume data relocations for all storage pools 32 l View storage pool
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    balancing across the disks in tiered and non-tiered pools. FAST VP is an automated feature that optimizes disk utilization. It requires very little manual intervention. Note To configure and use the FAST VP feature, the FAST VP license must be installed on the system. The data relocation performed
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    relocation rate and an end time for the data relocation operation. You can do the following to control manual data relocations: l Start or stop a manual data relocation. l Pause manual relocations that are currently in progress. This action also pauses all scheduled data relocations. l Resume paused
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    Using FAST VP Table 8 FAST VP tiering policy settings (continued) Tiering policy Corresponding initial Description tier placement Lowest Available Tier Lowest available tier Sets the initial data placement and subsequent data relocation (if applicable) to the most cost-effective disks with
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    initiate or stop data relocations for a storage pool If a FAST VP license is installed on the system, you can manually initiate or stop data relocations for storage pools. Procedure 1. Click Storage > Storage Configuration > Storage Pools. 2. Select the storage pool for which you want to initiate
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    . Pause or resume data relocations for all storage pools Pausing data relocations stops all scheduled data relocations as well as manual data relocations that are in progress. Resuming data relocations restarts these data relocations. Procedure 1. Select Settings > Data Efficiency Settings. 2. Do
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    Using FAST VP View system level data relocation information Procedure 1. Click Settings > Data Efficiency Settings. The General tab shows the following information: l Whether scheduled relocations are enabled for the system. l Amount of data scheduled to move to higher and lower tiers. l Amount of
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    Using FAST VP 34 EMC VNXe Series 3.1 Configuring Storage Pools
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    CHAPTER 5 Configuring storage pools using the CLI l Configure storage pools automatically (physical deployments only 36 l Configure custom storage pools 38 l Manage storage pool tiers 50 l Manage FAST Cache (physical deployments only 52 l Manage FAST VP general settings 54 l Manage FAST VP pool
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    Configuring storage pools using the CLI Configure storage pools automatically (physical deployments only) Storage pools are the groups of disks, called disk groups, on which you create storage resources. The system can automatically configure storage pools by selecting the appropriate disk groups
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    Configuring storage pools using the CLI Table 9 Automatic pool configuration attributes (continued) Attribute Drives (current) Drives (new) RAID level Stripe length Description List of disks currently in the pool. List of disks to be added to the pool. RAID level applied. Comma-separated list of
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    Configuring storage pools using the CLI uemcli -d 10.0.0.1 -u Local/joe -p MyPassword456! /stor/config/auto show Storage system address: 10.0.0.1 Storage system port: 443 HTTPS connection 1: Target = Pool Name = Performance Drives (current) = 5 x 600GB SAS; 5 x 300GB SAS Drives (new) = 5 x
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    . Because thin provisioned storage resources can subscribe to more storage than is actually allocated to them, storage pools can be over provisioned to support more storage capacity than they actually possess. Note The system automatically generates an alert when the total pool usage reaches 85% of
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    Configuring storage pools using the CLI Table 10 Custom storage pool attributes (continued) Attribute Description l No Health state Health state of the storage pool. The health state code appears in parentheses. Value is one of the following: l Unknown (0) - Health is unknown. l OK (5) -
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    Configuring storage pools using the CLI Table 10 Custom storage pool attributes (continued) Attribute Description l Failed Auto-delete paused Indicates whether an auto-delete operation is paused. Value is one of the following: l Yes l No Auto-delete pool full threshold enabled Indicates
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    Configuring storage pools using the CLI Action qualifier Qualifier Description -async Run the operation in asynchronous mode. -name Type a name for the storage pool. -descr Type a brief description of the storage pool. -storProfile (physical deployments only) Type the ID of the storage
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    Configuring storage pools using the CLI Qualifier Description l extreme -alertThreshold -FASTCacheEnabled -snapPoolFullThresholdEnabled -snapPoolFullHWM -snapPoolFullLWM -snapSpaceUsedThresholdEnabled -snapSpaceUsedHWM -snapSpaceUsedLWM For thin provisioning, specify the threshold, as a
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    Configuring storage pools using the CLI Example 1 (physical deployments only) The following command creates a storage pool that uses storage profiles SP_1and SP_2, and seven disks from disk group DG_1 and five disks from disk group DG_2. The configured storage pool receives ID SPL_4: uemcli -d 10
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    Configuring storage pools using the CLI Total space = 4947802324992 (4.5T) Current allocation = 3298534883328 (3T) Remaining space = 1649267441664 (1.5T) Subscription = 10995116277760 (10T) Subscription percent = 222% Alert threshold = 70% Drives = 6 x 100GB EFD; 6 x 300GB SAS
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    Configuring storage pools using the CLI Example 2 (virtual deployments only) The following command shows details for all storage pools on a virtual system. uemcli -d 10.0.0.2 -u Local/joe -p MyPassword456! /stor/config/pool show -detail Storage system address: 10.0.0.2 Storage system port: 443
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    Configuring storage pools using the CLI Qualifier Description -name Type a name for the storage pool. -descr Type a brief description of the storage pool. -alertThreshold For thin provisioning, specify the threshold, as a percentage, when the system will alert on the amount of subscription
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    Configuring storage pools using the CLI Qualifier -snapAutoDeletePaused Description Specify whether to pause snapshot autodelete. Typing no resumes the auto-delete operation. Example The following command sets the subscription alert threshold for storage pool SPL_1 to 70%: uemcli -d 10.0.0.1 -u
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    Configuring storage pools using the CLI Qualifier -disk (virtual deployments only) -tier (virtual deployments only) Description Specify the list of disks, separated by commas, to add to the storage pool. Specified disks must be reliable storage objects which do not require additional protection.
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    Configuring storage pools using the CLI Action qualifier Qualifier -async Description Run the operation in asynchronous mode. Example The followingdeletes storage pool SPL_1: uemcli -d 10.0.0.1 -u Local/joe -p MyPassword456! /stor/config/pool - id SPL_1 delete Storage system address: 10.0.0.1
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    Configuring storage pools using the CLI Object qualifier Qualifier -pool Description Type the ID of a storage pool. Example 1 (physical deployments only) The following command shows details about all storage pools on the system: uemcli -d 10.0.0.1 -u Local/joe -p MyPassword456! /stor/config/pool/
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    Configuring storage pools using the CLI 3: Name = Capacity Drives = Total space = 0 Current allocation = 0 Remaining space = 0 Manage FAST Cache (physical deployments only) FAST Cache is a storage efficiency technology that uses disks to expand the cache capability of the storage system to
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    Configuring storage pools using the CLI uemcli -d 10.0.0.1 -u Local/joe -p MyPassword456! /stor/config/ fastcache create -diskGroup DG_1 -drivesNumber 6 enableOnExistingPools Storage system address: 10.0.0.1 Storage system port: 443 HTTPS connection Operation completed successfully. View FAST
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    Configuring storage pools using the CLI Manage FAST VP general settings Fully Automated Storage Tiering for Virtual Pools (FAST VP) is a storage efficiency technology that automatically moves data between storage tiers within a storage pool based on data access patterns. The following table lists
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    Table 13 FAST VP general attributes (continued) Configuring storage pools using the CLI Change FAST VP general settings Change FAST VP general settings. Format /stor/config/fastvp set [-async] [-schedEnabled {yes | no}] [days ] [-at ] [-until ] [-rate {low | medium | high}] [-
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    Configuring storage pools using the CLI Qualifier -until -rate Description Specify the time to stop the data relocation. The format is: [HH:MM] where: l HH - Hour l MM - Minute Valid values are between 00:00 and 23:59. Default value is eight hours after the time specified with the -at parameter.
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    - Data relocation is in progress. l Failed - Data relocation failed. Relocation type Type of data relocation. Value is one of the following: l Manual - Data relocation was initiated by the user. l Scheduled or rebalancing - Data relocation was initiated by the system because it was scheduled, or
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    Configuring storage pools using the CLI Table 14 FAST VP pool attributes (continued) Attribute Rate Description Identifies the transfer rate for the data relocation. Value is one of the following: l Low - Least impact on system performance. l Medium - Moderate impact on system performance. l High
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    Table 14 FAST VP pool attributes (continued) Configuring storage pools using the CLI Change FAST VP pool settings Modify FAST VP settings on an existing pool. Format /stor/config/pool/fastvp -pool set [-async] schedEnabled {yes | no} Object qualifier Qualifier -pool Description Type the
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    /joe -p MyPassword456! /stor/config/pool/ fastvp -show -detail Storage system address: 10.0.0.1 Storage system port: 443 HTTPS connection 1: Pool = pool_1 Relocation type = manual Status = Active Schedule enabled = no Start time = 2013-09-20 12:55:32 End time = 2013-09-20 21:10:17 Data
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    Configuring storage pools using the CLI Example The following command starts data relocation on storage pool pool_1, and directs it to end at 04:00: uemcli -d 10.0.0.1 -u Local/joe -p MyPassword456! /stor/config/pool/ fastvp -pool pool_1 start -endTime 04:00 Storage system address: 10.0.0.1
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    Configuring storage pools using the CLI Table 15 Storage pool resources (continued) Attribute Resource type Pool Total pool space used Total pool snapshot space used Health state Health details Description Type of the resource. Valid values are LUN, File system, LUN group, VMware NFS, VMware VMFS
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    Configuring storage pools using the CLI Total pool snapshot space used = 4294967296 (4GB) Health state = OK (5) Health details = "The component is operating normally. No action is required." 3: ID = nas_1 Name = NASServer00 Resource type = NAS server Pool = pool_1 Total pool space
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    Configuring storage pools using the CLI Table 16 Storage profile attributes (continued) Attribute Description Note For best fit profiles, this value is Best fit . Note The show action command on page 67 explains how to change the output format. Format /stor/config/profile [-id | -
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    Configuring storage pools using the CLI Manage disk groups (physical deployments only) Disk groups are the groups of disks on the system with similar characteristics, including type, capacity, and spindle speed. When configuring storage pools, you select the disk group to use and the number of
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    Configuring storage pools using the CLI Drive type = FAT-SAS Drive size = 536870912000 (500GB) Rotational speed = 10000 rpm Number of drives = 21 Unconfigured drives = 7 Capacity = 11544872091648 (10.5TB) Recommended number of spares = 1 2: ID = DG_2 Drive type = FAT-SAS Drive size
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    Configuring storage pools using the CLI Capacity = 4398046511104 (4TB) 2: ID = DG_2 Drive type = SAS Drive size = 268435456000 (250GB) Number of drives = 4 Allowed numbers of drives = 4 Capacity = 1099511627776 (1TB) The show action command The show action command displays a list of
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    Configuring storage pools using the CLI Ports Health state = eth0_SPB,eth1_SPB = OK (5) Table format ID | SP | Ports | Health state la0_SPA | SPA | eth0_SPA,eth1_SPA | OK (5) la0_SPB | SPB | eth0_SPB,eth1_SPB | OK (5) Comma-separated values format ID,SP,Ports,Health state la0_SPA,SPA,"
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EMC
®
VNXe
®
Series
Version 3.1
Configuring Storage Pools
300-015-479 REV 02