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Windows 2008 and Iscsi

Posted on 2013-10-23
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Last Modified: 2013-10-28
HI,
I have a large NAS box that i want to attach to a Windows 2008 server via ISCSI (this is all easy enough and i can do that no problem). i will use the NAS as a destination for backups of our Ahsay data as a bit of redundancy.

My question is - if i attach the disk via ISCSI and format it etc - IF my windows server fails and i have to reload it or attach another windows server, when i connect or try to mount the ISCSI drive it will ask to format it (im pretty sure).

So if i lose the main windows server it means i not only lose the data on that but i have no way to get to the backup (of the backup files) from the ISCSI...

is that correct, or if it isnt how can i mount that NTFS formatted ISCSI to another server (or the same one but reformatted)?

thanks
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Question by:Lee Pepper
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5 Comments
 
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Expert Comment

by:ienaxxx
ID: 39593619
AFAIK it is not correct. you can detach the disk (iSCSI target) from one server and attach it under another with no data loss.
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Author Comment

by:Lee Pepper
ID: 39593622
but in disk management in windows it just says i need to initialize or format (cant remember which but it definitely asked that before - hence my question)...


i can of course try again with a test server to simulate a reload or replacement server - but you definitely think i can connect to that target and see the disk in windows without it asking any format etc?

is there any 'must do' on the iscsi setup to do that or it will simply work
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Author Comment

by:Lee Pepper
ID: 39593626
could i also simulate it by just deleting the ISCSI target in windows and then re-create it?
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Expert Comment

by:ienaxxx
ID: 39593629
There are various articles telling that they reconnect a disk after ugrading / reformatting (example here)


Here are some best practices to keep in mind, hoping you'll find something useful.
http://www.axiomdynamics.com/it-tweaks-and-tricks/iSCSI-best-practices/html/iSCSI-Best-Practices-VMware-EMC-Microsoft.html

In my personal experience i can confirm i detached a disk from a target server and reconnected to a new one without the need of reformatting, but it was a lot of time ago...)
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Accepted Solution

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ienaxxx earned 500 total points
ID: 39593633
the process to change the LUN targeting depends in a large manner to your specific NAS.

here is a thread where they're asking about a problem in changing just one LUN to another server.
http://social.technet.microsoft.com/Forums/windowsserver/en-US/4fde0d58-1b2e-4f66-acc2-e2fdfdad921c/wss2008r2-moving-luns-to-another-server?forum=winserverfiles
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