Users Guide
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NVSRAM settings
You must change the following NVSRAM setting to allow for the mapping of LUNs to multiple hosts or host groups in order to
support test failover within SRM. During test failover, snapshots are created on the Recovery Site Storage Array. You can map these
snapshots to multiple hosts or host groups of the ESX or ESXi host participating in the recovery.
1. From the MD Storage Manager Enterprise Management window, select Tools → Execute Script option from the drop-down
menu.
2. Enter the following commands at the script editor window:
show allControllers NVSRAMByte[0x3b];
set controller [0] NVSRAMByte[0x3b]=2;
set controller [1] NVSRAMByte[0x3b]=2;
reset controller [0];
reset controller [1];
3. Select Tools → Verify and Execute option from the menu.
4. To apply the changes to the RAID controller module 1, repeat steps 2 and 3, substituting [1] for [0].
5. Exit the script editor after completing the changes for the RAID controller module 1.
The controllers take several minutes to reset and the execution message to complete.
This procedure maps a virtual disk to two hosts or host groups (increasing [0x3b]=x, dene the number of hosts or host groups
allowed).
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