RTFM Education – Virtualization, VMware, Citrix

Apr 1 2010   8:19AM GMT

The mechanics of VMware Site Recovery Manager resignaturing

MikeLaverick MikeLaverick Profile: MikeLaverick

Editors Note: This is part two of a two-part series on VMware Site Recovery Manager (SRM). If you’re just joining us, please take a minute to read part one, which goes over the basics of VMware Site Recovery Manager and what resignaturing is.

In normal day-to-day operations an ESX host in the protected site should not get to see both the original LUN and replicated LUN/snapshot at the same time. If it did, ESX would suppress the second LUN/volume. If an ESX host was allowed to see both LUNs/volumes at the same time, ESX would be very confused and not at all happy. It wouldn’t know which LUN/volume to send its reads and writes to. In ESX 3.5, the host would print a hard console error message, suggesting you may need to do a resignature of the VMFS volume.

Read on…

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