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

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vSphere Storage5 Select disks to be used for Virtual SAN.On each host, you must select at least one SSD and one or multiple HDDs. If you select several SSDs,the number of HDDs must be equal to the number of SSDs, or greater.Virtual SAN claims the disks that you select and organizes them into default disk groups that back theVirtual SAN datastore.Use Manual Method to Claim Disks for Virtual SANWhen Virtual SAN is enabled in the manual mode for the host cluster, you can use a manual method ofcombing specific SSDs with specific HDDs and creating user-defined disk groups on a particular host.This method contrasts with the semi-automatic claiming of disks for Virtual SAN, where you can selectmultiple disks to be consumed by Virtual SAN, but do not organize them into groups. Instead, after youselect the disks, Virtual SAN creates default disk groups for you. In contrast, when you manually create adisk group, you can be more specific and organize selected disks into disk groups. You first select an SSDand then add up to seven HDD disks of your choice to form a disk group. Virtual SAN supports up to fivedisk groups per a host. The disk groups that you create belong to the particular host where the disks reside,and you cannot reassign the groups to another host.When you create a disk group, your main consideration should be the ratio of SSD to HDD capacity.Although the ratios depend on use cases and workloads, the best practice is to use 1:10 ratio of the SSD toHDD capacity.Procedure1 Browse to the Virtual SAN cluster in the vSphere Web Client navigator.2 Click the Manage tab and click Settings.3 Under Virtual SAN, click Disk Management.4 Click the Create a new disk group icon.5 Select an SSD disk, and then select one or multiple non-SSD disks.For each disk group, you can select only one SSD and up to six non-SSD disks.6 Click OK.The new disk group appears on the list.Add a Disk to the Disk GroupWhen you use Virtual SAN in manual mode, you can add local disks to existing disk groups.Procedure1 Browse to the Virtual SAN cluster in the vSphere Web Client navigator.2 Click the Manage tab and click Settings.3 Under Virtual SAN, click Disk Management.4 Select the disk group, and click the Add a disk to the selected disk group icon.5 Select a disk to add and click OK.The disk appears on the list of disks that belong to the disk group.184 VMware, Inc.
Chapter 19 Working with Virtual SANRemove Disks from Virtual SANYou can remove an entire disk group or selected disks from the disk group.You can remove disks or disk groups only when Virtual SAN is in manual mode. For the automatic diskclaim mode, the remove action is not supported.NOTE Removing a single SSD disk or all non-SSDs from the disk group, removes the entire disk group.PrerequisitesBecause removing disks might be disruptive for the Virtual SAN datastore and virtual machines on thedatastore, make sure that no virtual machines use the disks or the disk group that you remove. To achievethis, place the Virtual SAN host in maintenance mode.Procedure1 Browse to the Virtual SAN cluster in the vSphere Web Client navigator.2 Click the Manage tab and click Settings.3 Under Virtual SAN, click Disk Management.4 Remove a disk group or selected disks.OptionDescriptionRemove the Disk Group a Under Disk Groups, select the disk group to remove, and click theRemove the Disk Group icon.Remove the Selected Disk a Under Disk Groups, select the disk group that contains the disk toremove.bUnder Disks, select the disk to remove, and click the Remove theSelected Disks icon.Any SSDs that you remove from Virtual SAN become available for such features as Flash Read Cache.Monitoring Virtual SANVirtual SAN supports extensive monitoring facilities. You can monitor your Virtual SAN environment froma vSphere Web Client.You can monitor different objects in your Virtual SAN setup. You can monitor hosts that participate in aVirtual SAN cluster just like any other host that is managed by vCenter Server. In addition, you can monitorthe Virtual SAN datastore. See vSphere Monitoring and Performance documentation.Monitor the Virtual SAN ClusterYou can monitor the Virtual SAN cluster and all the objects that are related to the cluster.Procedure1 Browse to the Virtual SAN cluster in the vSphere Web Client navigator.2 Select the Monitor tab and click Virtual SAN.3 Select Physical Disks to review all hosts and <strong>storage</strong> disks that belong to the cluster.Information about <strong>storage</strong> disks, such as capacity, used capacity, and so on appears.VMware, Inc. 185
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vSphere StorageESXi 5.5vCenter Serv
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vSphere Storage6 Modifying Fibre Ch
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ContentsUsing esxcli Commands with
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About vSphere StoragevSphere Storag
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Introduction to Storage 1This intro
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Chapter 1 Introduction to StorageNe
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vSphere StorageSupported Storage Ad
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vSphere StorageDisplay Datastore In
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vSphere StorageFigure 1‐6. Virtua
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vSphere Storage26 VMware, Inc.
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vSphere Storage• “SAN Storage B
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vSphere StorageUse the Predictive S
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vSphere StorageFile-Based (VMFS) So
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vSphere StoragePorts in Fibre Chann
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vSphere StorageSetting LUN Allocati
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vSphere StorageRequirements for Usi
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vSphere StorageOptionGenerate new W
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vSphere StorageConfiguration Guidel
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vSphere StorageBoot from SANDirect
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vSphere StorageFigure 6‐1. SAN Fa
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vSphere StorageHitachi Data Systems
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vSphere StorageBoot from Fibre Chan
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vSphere StorageConfigure Emulex HBA
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vSphere Storage10 If any remaining
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vSphere Storage• Coredump is not
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vSphere Storage• Use the esxcli c
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vSphere Storage• Become familiar
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vSphere StorageTable 9‐1. Multipa
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vSphere StoragePorts in the iSCSI S
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vSphere StorageFigure 10‐1. Targe
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vSphere StorageHow Virtual Machines
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vSphere Storage• “Configuring C
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vSphere StorageView Independent Har
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vSphere StorageView Dependent Hardw
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vSphere StorageWhat to do nextSelec
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vSphere StorageOne way to achieve t
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vSphere Storage6 Enter a network la
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vSphere StorageBind iSCSI and VMker
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vSphere StorageEnable Jumbo Frames
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vSphere StorageRemove Static Target
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vSphere Storage• Use unidirection
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vSphere StorageTable 11‐5. Additi
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vSphere StorageProcedureuTo list iS
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vSphere StorageVMware tests ESXi wi
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vSphere Storage6 Using the wizard,
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vSphere StorageHP StorageWorks SAN/
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vSphere Storage• Configure a diag
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vSphere StorageWhen you first boot
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vSphere StorageInstall ESXi to iSCS
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vSphere StorageChanging iSCSI Boot
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vSphere StorageIf there are no runn
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vSphere StorageWhen writing data to
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vSphere StorageTable 14‐2. iSCSI
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vSphere StoragevmhbaAdapter:CChanne
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vSphere StoragePerform Adapter Resc
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vSphere StoragePerforming Planned S
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vSphere StorageBy default, the APD
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vSphere StoragePDL Conditions and H
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Page 134 and 135: vSphere Storage• “Creating a Di
Page 136 and 137: vSphere StorageSharing a VMFS Datas
Page 138 and 139: vSphere StorageThe device parameter
Page 140 and 141: vSphere Storage6 Specify partition
Page 142 and 143: vSphere StorageWhat to do nextIf yo
Page 144 and 145: vSphere StorageIncreasing VMFS Data
Page 146 and 147: vSphere StorageProcedure1 Right-cli
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Page 150 and 151: vSphere StorageVerify a Diagnostic
Page 152 and 153: vSphere StorageTable 16‐5. VOMA C
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Page 156 and 157: vSphere StorageFor example, you nee
Page 158 and 159: vSphere Storage• Replication soft
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Page 164 and 165: vSphere StorageAuto-Detection of SS
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Page 168 and 169: vSphere StorageMonitor SSD DevicesY
Page 170 and 171: vSphere StorageConfigure the Host C
Page 174 and 175: vSphere StorageIf a host contribute
Page 176 and 177: vSphere Storage• Virtual SAN take
Page 178 and 179: vSphere StorageSet Up Networking fo
Page 180 and 181: vSphere StorageEnabling Virtual SAN
Page 182 and 183: vSphere StorageProcedure1 Browse to
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Page 188 and 189: vSphere StorageVirtual SAN and Stor
Page 190 and 191: vSphere StorageDefine a Storage Pro
Page 192 and 193: vSphere Storage5 Move the host back
Page 196 and 197: vSphere StorageA storage system can
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Page 200 and 201: vSphere StorageEdit a Storage Polic
Page 202 and 203: vSphere StorageCheck Storage Compli
Page 206 and 207: vSphere StorageDRS Support for Flas
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Page 210 and 211: vSphere StorageUsing esxcli Command
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vSphere StorageOption-M|--model=str
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vSphere StorageHardware Acceleratio
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vSphere StoragePrerequisitesInstall
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vSphere Storage2 To list the VAAI p
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vSphere StorageInstall NAS Plug-InI
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vSphere StorageHardware Acceleratio
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vSphere StorageFigure 25‐1. Thick
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vSphere StorageProcedure1 In the vS
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vSphere Storage3 As the space used
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vSphere StorageThis type of informa
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vSphere StorageSecuring Communicati
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vSphere StorageTable 27‐1. vmkfst
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vSphere Storagedatastore is the new
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vSphere StorageThis option creates
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vSphere StorageYou must power off t
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vSphere Storage• -L lunreset - Re
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vSphere Storagecompatibility modesp
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vSphere StorageiSCSI initiatorsconf
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vSphere Storagevirtual compatibilit
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vSphere StorageVASA, See vStorage A
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