‎Assigning a LUN to multiple storage groups | DELL Technologies

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Jithu9288

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Jithu9288

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April 17th, 2012 10:00

Assigning a LUN to multiple storage groups

Hi,

I would like to know is it recommended to assign one LUN to multiple storage groups?

What will happen in this situation? Can we make the LUN read only?

If both the server writes to the LUN, will it get corrupted?

Incase of a Boot LUN, do we allocate one LUN to multiple hosts?

Please help.

E
etaljic81
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Posted April 17th, 2012 10:00
Is it recommended to assign a LUN to multiple storage groups? - If you are working with clustered hosts, yes (ESX, MSCS, etc.). Non-clustered hosts, no

What will happen? - You can possibly corrupt data

In case of boot LUN? - Each server should get its own storage group. Boot LUNs should be unique for ecah storage group and the data LUNs will be presented to each server's storage group. Just make sure you match the HLU's when adding the data LUN to two or more storage groups.

Can you add a LUN as read only? - Yes, if you are running Flare R31.5.5xx or greater. It can only be done from the cli and the command is: naviseccli -h ip storagegroup -addhlu -readonly
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Jithu9288
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Posted April 17th, 2012 10:00
Wintel wants to install the OS, just this question came in mind since am new to SAN.
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dynamox
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Posted April 17th, 2012 10:00
unless you are using some kind of clustered file systems, no two windows can't write to the same file system at the same time ..corruption waiting to happen. What's the use case ..why do they need to share one file system ?
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dynamox
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Posted April 17th, 2012 10:00
what OS/application/virtualization ?