vsphere-esxi-vcenter-server-55-storage-guide

Chapter 24 Storage Hardware Acceleration# esxcli --server=server_name storage core claimrule load --claimrule-class=Filter# esxcli --server=server_name storage core claimrule load --claimrule-class=VAAI# esxcli --server=server_name storage core claimrule run --claimrule-class=FilterDelete Hardware Acceleration Claim RulesUse the esxcli command to delete existing hardware acceleration claim rules.In the procedure, --server=server_name specifies the target server. The specified target server prompts youfor a user name and password. Other connection options, such as a configuration file or session file, aresupported. For a list of connection options, see Getting Started with vSphere Command-Line Interfaces.PrerequisitesInstall vCLI or deploy the vSphere Management Assistant (vMA) virtual machine. See Getting Started withvSphere Command-Line Interfaces. For troubleshooting, run esxcli commands in the ESXi Shell.ProcedureuRun the following commands:esxcli --server=server_name storage core claimrule remove -r claimrule_ID --claimruleclass=Filteresxcli --server=server_name storage core claimrule remove -r claimrule_ID --claimruleclass=VAAIHardware Acceleration on NAS DevicesHardware acceleration allows your host to integrate with NAS devices and use several hardware operationsthat NAS storage provides.The following list shows the supported NAS operations:• Full file clone. This operation is similar to the VMFS block cloning except that NAS devices clone entirefiles instead of file segments.• Reserve space. Enables storage arrays to allocate space for a virtual disk file in thick format.Typically, when you create a virtual disk on an NFS datastore, the NAS server determines the allocationpolicy. The default allocation policy on most NAS servers is thin and does not guarantee backingstorage to the file. However, the reserve space operation can instruct the NAS device to use vendorspecificmechanisms to reserve space for a virtual disk. As a result, you can create thick virtual disks onthe NFS datastore.• Lazy file clone. Allows VMware View to offload creation of linked clones to a NAS array.• Extended file statistics. Enables storage arrays to accurately report space utilization.With NAS storage devices, the hardware acceleration integration is implemented through vendor-specificNAS plug-ins. These plug-ins are typically created by vendors and are distributed as VIB packages througha web page. No claim rules are required for the NAS plug-ins to function.There are several tools available for installing and upgrading VIB packages. They include the esxclicommands and vSphere Update Manager. For more information, see the vSphere Upgrade and Installing andAdministering VMware vSphere Update Manager documentation.VMware, Inc. 241