vSphere Storage - ESXi 5.1 - Documentation - VMware

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vSphere Storage The following thin provisioning status indicates that the storage device is thin-provisioned. # esxcli --server=server_name storage core device list -d naa.XXXXXXXXXXXX4c naa.XXXXXXXXXXXX4c Display Name: XXXX Fibre Channel Disk(naa.XXXXXXXXXXXX4c) Size: 20480 Device Type: Direct-Access Multipath Plugin: NMP --------------------- Thin Provisioning Status: yes Attached Filters: VAAI_FILTER VAAI Status: supported --------------------- An unknown status indicates that a storage device is thick. NOTE Some storage systems present all devices as thin-provisioned no matter whether the devices are thin or thick. Their thin provisioning status is always yes. For details, check with your storage vendor. Disable Space Reclamation Use the esxcli command to disable space reclamation on a thin-provisioned LUN. When you delete virtual machine files from a VMFS datastore, or migrate them through Storage vMotion, the datastore frees blocks of space and informs the storage array, so that the blocks can be reclaimed. If you do not need thin provisioned LUNs to reclaim the freed space, you can disable space reclamation on the host. NOTE As with any advanced settings, before disabling the space reclamation, consult with the VMware support team. In the procedure, --server=server_name specifies the target server. The specified target server prompts you for a user name and password. Other connection options, such as a configuration file or session file, are supported. For a list of connection options, see Getting Started with vSphere Command-Line Interfaces. Prerequisites Install vCLI or deploy the vSphere Management Assistant (vMA) virtual machine. See Getting Started with vSphere Command-Line Interfaces. For troubleshooting , run esxcli commands in the ESXi Shell. Procedure u Run the following command: esxcli --server=server_name system settings advanced set --int-value 0 -option /VMFS3/EnableBlockDelete. Reclaim Accumulated Storage Space When VMFS datastores reside on thin-provisioned LUNs, you can use the vmkfstools -y to reclaim storage blocks resulting from deleting or moving files from the VMFS datastores. IMPORTANT You can use this command only if your storage vendor has tested this option with storage arrays and supports it. For information on how to verify whether the array supports this command, see the VMware knowledge base article at http://kb.vmware.com/kb/2014849. Prerequisites n Upgrade your host to ESXi 5.1. n Upgrade a datastore deployed on the thin-provisioned device to VMFS5. 232 VMware, Inc.
Procedure Chapter 22 Storage Thin Provisioning 1 On the ESXi Shell, change to the datastore directory by using the cd /vmfs/volumes/datastore_name command. 2 Reclaim a specified percentage of free capacity on the VMFS5 datastore for the thin-provisioned device by running vmkfstools -y %. % is an integer between 1 and 99. It represents a percentage of VMFS free capacity to be reclaimed. The recommended value is 60. VMware, Inc. 233
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vSphere Storage ESXi 5.1 vCenter Se
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Contents About vSphere Storage 9 Up
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Configuring Discovery Addresses for
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22 Storage Thin Provisioning 225 St
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About vSphere Storage vSphere Stora
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Updated Information This vSphere St
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Introduction to Storage 1 This intr
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Networked Storage Networked storage
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Network-attached Storage (NAS) Stor
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Table 1-1. Storage Device Informati
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Table 1-2. Storage Adapter Informat
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Display Datastore Information in th
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Figure 1-6. Virtual machines access
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Overview of Using ESXi with a SAN 2
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ESXi Hosts and Multiple Storage Arr
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Not all applications need to be on
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n Overall impact on SAN environment
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Using ESXi with Fibre Channel SAN 3
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With ESXi hosts, use a single-initi
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Configuring Fibre Channel Storage 4
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2 Check that all SAN components mee
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3 Click VM Options. 4 Click the Fib
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Configuring Fibre Channel over 5 Et
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6 Select the network adapter (vmnic
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6 Click OK. The software FCoE adapt
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Modifying Fibre Channel Storage for
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n To use boot from SAN, make sure t
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3 Execute these commands for SPB to
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Booting ESXi from Fibre Channel SAN
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2 Configure the storage array. a Fr
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g Select 1. WWPN. (Boot this device
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Booting ESXi with Software FCoE 8 E
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Install and Boot ESXi from Software
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Best Practices for Fibre Channel 9
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Storage Array Performance Storage a
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Using ESXi with iSCSI SAN 10 You ca
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The 16-hexadecimal digits are text
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Discovery A discovery session is pa
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Configuring iSCSI Adapters and 11 S
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For active-passive storage arrays n
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Change Name and IP Address for Inde
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n Broadcom iSCSI adapters do not su
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The software iSCSI adapter configur
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Procedure 1 Browse to the host in t
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Figure 11-2. 1:1 adapter mapping on
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You created the virtual VMkernel ad
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5 Click Add and select a VMkernel a
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5 Create iSCSI VMkernel adapters fo
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Managing iSCSI Network Special cons
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Enable Jumbo Frames for Independent
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Procedure 1 Log in to the vSphere C
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Table 11-4. CHAP Security Level (Co
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2 Under Adapter Details, click the
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3 From the list of available target
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Table 11-5. Additional Parameters f
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Procedure u To list iSCSI sessions,
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Modifying iSCSI Storage Systems for
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n Certain EMC CLARiiON CX3 models m
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NetApp Storage Systems For NetApp s
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Booting from iSCSI SAN 13 When you
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4 Select the I/O port to configure.
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2 Change Boot Sequence in BIOS on p
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Isolated iSCSI and Management Netwo
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Best Practices for iSCSI Storage 14
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Because each application has differ
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Generally, applications or systems
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Managing Storage Devices 15 Manage
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Storage Refresh and Rescan Operatio
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Change the Number of Scanned LUNs B
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It is possible for a device to retu
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To avoid these problems, your host
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PDL Conditions and High Availabilit
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Solid State Disks Enablement 16 In
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4 Unclaim the device. u You can unc
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6 Check the device status by runnin
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Best Practices for SSD Devices Foll
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Working with Datastores 17 Datastor
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n Scalability improvements on stora
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n Creating a template n Deploying a
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In an L3 environment the following
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The datastore on the SCSI-based sto
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Procedure 1 Log in to the vSphere C
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When you perform datastore resignat
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2 Click the Configuration tab and c
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Option Description Use free space D
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3 In the Inventory panel, choose Da
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Turn off Storage Filters When you p
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Set Up Dynamic Disk Mirroring Typic
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4 Click Next. 5 Select the device t
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Raw Device Mapping 18 Raw device ma
Page 181 and 182: Snapshots Makes it possible to use
Page 183 and 184: n You cannot convert larger than 2T
Page 185 and 186: 9 In the Ready to Complete New Virt
Page 187 and 188: Manage Paths for a Mapped LUN in th
Page 189 and 190: VMkernel and Storage 19 The VMkerne
Page 191 and 192: Chapter 19 VMkernel and Storage n A
Page 193 and 194: Understanding Multipathing and 20 F
Page 195 and 196: Figure 20-2. Host-Based Path Failov
Page 197 and 198: Figure 20-4. Port Reassignment 10.0
Page 199 and 200: Figure 20-5. Pluggable Storage Arch
Page 201 and 202: 6 The SATP interprets the I/O comma
Page 203 and 204: 3 Click Devices under View. 4 Selec
Page 205 and 206: 2 In the Paths panel, right-click t
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Page 209 and 210: Procedure 1 To define a new claim r
Page 211 and 212: Mask Paths You can prevent the host
Page 213 and 214: Procedure 1 To add a claim rule for
Page 215 and 216: Storage Hardware Acceleration 21 Th
Page 217 and 218: On your host, the hardware accelera
Page 219 and 220: Procedure u Run the esxcli --server
Page 221 and 222: 3 Load both claim rules by running
Page 223 and 224: Uninstall NAS Plug-Ins To uninstall
Page 225 and 226: Storage Thin Provisioning 22 With E
Page 227 and 228: You can use Storage vMotion or cros
Page 229 and 230: 3 Click the Hardware tab and select
Page 231: Requirements To use the thin provis
Page 235 and 236: Using Storage Vendor Providers 23 W
Page 237 and 238: n Alarms indicate a change in stora
Page 239 and 240: 3 In the Storage Providers list, vi
Page 241 and 242: Virtual Machine Storage Profiles 24
Page 243 and 244: View Existing Storage Capabilities
Page 245 and 246: Assign User-Defined Storage Capabil
Page 247 and 248: Remove a Storage Capability in the
Page 249 and 250: Create a Virtual Machine Storage Pr
Page 251 and 252: Procedure 1 Open the Profiles tab o
Page 253 and 254: Monitor Storage Compliance for Virt
Page 255 and 256: Using vmkfstools 25 vmkfstools is o
Page 257 and 258: File System Options File system opt
Page 259 and 260: When upgrading the datastore, use t
Page 261 and 262: Renaming a Virtual Disk This option
Page 263 and 264: Listing Attributes of an RDM This o
Page 265 and 266: Index Symbols * next to path 201 A
Page 267 and 268: G GPT 18 H hardware acceleration ab
Page 269 and 270: limitations 42 requirements 41 O on
Page 271 and 272: EMC CLARiiON 52, 114 EMC Symmetrix
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