Srdfsynchronous operations 69 copyright 2015 emc

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SRDF/Synchronous Operations
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69 Copyright 2015 EMC Corporation. All rights reserved. Next we unmount the Production_Datastore from the Remote ESXi server. Now we can perform the SRDF Failback operation. Details of this using CLI has been presented in an earlier lesson. Using Unisphere for VMAX for SRDF operations will be presented in a later lesson in this module. SRDF/Synchronous Operations
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70 Copyright 2015 EMC Corporation. All rights reserved. We rescan the Primary ESXi server for all storage. SRDF/Synchronous Operations
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71 Copyright 2015 EMC Corporation. All rights reserved. As we chose to “Keep the existing signature” when we mounted the datastore on the Remote ESXi server after the rescan on the Primary ESXi server, we can still see the greyed out Production_Datastore that was unmounted prior to a failover. Right click the datastore and choose Mount. The Add Storage wizard should be used to mount the datastore if we had chosen Assign new signature on the Remote ESXi server. SRDF/Synchronous Operations
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72 Copyright 2015 EMC Corporation. All rights reserved. Browse datastore and add the VM to the inventory of the Primary ESXi server. Remember that we had shut down the VM, removed it from inventory, and unmounted the datastore in order to perform a graceful failover. So we now reverse the steps by first mounting the datastore (previous slide), add VM to inventory (this slide), and power-on VM (details not shown but we have done this a couple of times before). SRDF/Synchronous Operations
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73 Copyright 2015 EMC Corporation. All rights reserved. We can see that data added to the VM when running on Remote ESXi server (after an SRDF Fail over) is available back to the VM on the Primary ESXi server after performing an SRDF Failback operation. SRDF/Synchronous Operations
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74 Copyright 2015 EMC Corporation. All rights reserved. This lesson covered performing SRDF/S DR of a VMFS datastore. Datastore was created on the R1 device and synchronized with the R2 device in SRDF/S mode. The device pair was failed over and the copy of the datastore on the R2 device was accessed from an ESXi server connected to the remote VMAX3 array. SRDF/Synchronous Operations
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75 Copyright 2015 EMC Corporation. All rights reserved. This lesson covers performing SRDF/S DR for a VM accessing RDM hard disks. The RDF device pair is failed over and the VM is powered-on from the R2 device on an ESXi server connected to the remote VMAX3 array. SRDF/Synchronous Operations
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76 Copyright 2015 EMC Corporation. All rights reserved. The virtual machine RDM_VM on the Primary ESXi server seems to be using datastore1 for its storage. It is powered on. SRDF/Synchronous Operations
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77 Copyright 2015 EMC Corporation. All rights reserved. Properties of the VM show that its hard disk is an RDM in Physical Compatibility Mode. It is only the mapping file and other files that define this VM, that are stored on datastore1.
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