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VMWARE Disk greater than 256Gb

Hello,

I am using Dell R610 servers running vSphere 4.1 and a M3200 storage array.
I will need to create a VMWARE virtual disk of more than 256Gb for file storage.

Is it possible to change block size to 2M or 4M without reinstalling vShere?
Do I need to set something on storage array or is the change only on vSphere servers?
Can I do it with other virtual disks existing on the same LUN?

Best regards,
0
acharreau
Asked:
acharreau
3 Solutions
 
coolsport00Commented:
You don't need to reinstall vSphere...unless the hypervisor is installed on the same disks as the datsastore is on. You can potentially still reformat the datastore with the proper block size, but it's quicker to do a reinstall (IMO). If the hypervisor is not on the same disks, what you need to do is remove the datastore you want to create the virtual disk on. BUT...TAKE CAUTION...removing the datastore from the host/vCenter DELETES ALL DATA on the datastore, so you will need to move VMs/data off the datastore on to another one. You can then re-add the storage (datastore) with the proper block size under Configuration tab -> Storage -> Add Storage.

Regards.
~coolsport00
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Luciano PatrãoICT Senior Infraestructure Engineer Commented:
Hi

Like coolsport00 inform, the only way is to delete the VMFS volume and create a new one. You dont need to re-install ESX for this.

Take a look at this.

http://kb.vmware.com/kb/1012683

Jail
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VirtaliciousCommented:
I would recommend using 500GB VLUNs at 1MB of Block size as it will give you the best performance for the current level of technology of VMware.

As far as VMFS you can move stuff off, reslice and change the blocks and then re-populate with your data.

VCenter reinstall is not needed.

-Virt
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acharreauAuthor Commented:
Thank you for you replies.
Operation was done today and worked.

Best regards,
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