LUN Mapping Question

[V1GG3N]

Greetings Community, I have a rather bizarre question that I'm hoping one of you can help me with.

We have an ESXi (3.5 U4) server hosting a Windws 2003 Server running SQL 2005. This VM is using the Microsoft iSCSI Initiator to directly map LUNs from our iSCSI storage device for the SQL data and logs volumes. We know this is not the most effecient way to accomplish this, hence the following question:

If we shutdown the VM and and change the LUNs to RDMs to present directly to the guest will we lose the data on them? Will Windows recognize the new drives correctly?

Thanks very much for the help

[mvarre]

Think of the volume as being a usb stick. you're just plugging it into a new port by un-initiating it from ms software initiator and RDM'ing it. just dont do anything to the volume itself on the san.

[depping · Accepted solution]

You will not lose any data. just remove it and add it. Windows should just recognize it again without any issues.

Duncan

VMware Communities User Moderator | VCP | VCDX

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[mvarre]

but remember, never make any major changes without first getting a valid backup. i dont care how simple the change your making is...make the backup.

[V1GG3N]

Thank you for the helpful info - I'll be sure to award points once I've had a chance to test this... after a full backup, of course.

[mvarre]

i didnt mean to preach, but i made that mistake over the weekend and i thought i'd do my part to implore you do not make the mistake i made 😕

[V1GG3N]

No worries, we've all been there (too many times). I consider it an oportunity to audit our SQL backups. Thanks again

[V1GG3N]

Made the change this past weekend and everything worked like a charm. Thanks agian for all the help