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ESX VMs Datastore changing with VMotion

I get error when i try to snapshot or replication one of my VM server (exchange server size: 450 GB.)
ERROR:
File <unspecified filename> is larger than the maximum size supported by datastore <unspecified datastore>

I got info that my datastore not enough for Exchange server  ,.I have another data store 2MB.I plan to migrate my vm to datastore 2MB with vMotion.

Pls can someone show me how can i do and DO I NEED SMTG CONSIDERE BEFORE MIGRATE BECAUSE THIS IS EXCHANGE SERVER?

thanks
0
apollo-13
Asked:
apollo-13
3 Solutions
 
Exchange_GeekCommented:
You're right on your thought, read this for further info

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1012384

Regards,
Exchange_Geek
0
 
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
I think you have created the datastore with the wrong block size,

• 1MB block size – 256GB maximum file size
• 2MB block size – 512GB maximum file size
• 4MB block size – 1024GB maximum file size
• 8MB block size – 2048GB maximum file size

You need to create a new datastore with a block size of 4MB.

and then Shutdown the Exchange Virtual Machine, and use the Migrate Option, to select a new datastore.
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Paul SolovyovskyCommented:
In the future ensure that all your datastores are 8MB and you will not have this issue again.  There is no performance hit for having 8MB datastore starting in ESX 4
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