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ESX snapshot or replication error

File <unspecified filename> is larger than the maximum size supported by datastore <unspecified datastore>

I got this error when i want to make snapshot or replication my exchange server.
exchnage server size: 450 GB
my free space on the replication :526 GB

why i cant snapshot or replication ?
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apollo-13
Asked:
apollo-13
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16 Solutions
 
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
size of your virtual disk + snapshot disk exceeds datastore 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
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apollo-13Author Commented:
pls give me sugession. I need to make a backup my exchnage server as quick as possible.

Because this only one i cant get backup.
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Paul SolovyovskyCommented:
This is because when you are taking a snapshot the vmdk is exceeding the size requirement for your block size (probably 1MB/256GB. ).  Create a new datastore with 8MB block size, move VM to it and problem should go away.  If you have another datastore with a larger block size and capacity you can move the VM to it and that should resolve it.

You cannot change block size on a datasore, you would need to vacate VMs, delete datastore, recreate, and populate with your virtual machines.

Another option is to do a Virtual to Virtual with VMWare Converter to reduce the volume size if you have overprovisioned your virtual disks, this may reduce to a workable virtual disk size and problem will go away.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
what are the sizes of virtual disk and snapshot ?
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apollo-13Author Commented:
@paulsolov: i do not have to much experience, which way do you suggest?
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apollo-13Author Commented:
@hanccocka: how can i find them?

i have replication:here(500gb free) and Vms:here(600gb Free)
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
what is the disk size?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
edit the vm settings disk ?
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apollo-13Author Commented:
@hanccocka: do you mean LUN size?
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Paul SolovyovskyCommented:
what are the individual disk sizes?  What type of replication product are you using?
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apollo-13Author Commented:
veeam 5 .I have two places
1.for replication
2.for Vms
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
datastore size = lun
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Paul SolovyovskyCommented:
OK.

1.  So check the virtual disk sizes at the source
2.  Check the block sizes at the source
3.  Check the block sizes at the destination

We should be able to figure out from there.
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apollo-13Author Commented:
Lun100  490gb -50gb Free
Lun200  490gb-250gb free
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
select properties of each datastore, report the blocksize.
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apollo-13Author Commented:
LUN100 - max 512GB   Blocksize=2mb
LUN 200- max 256GB   Blocksize=1mb
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apollo-13Author Commented:
can i ask smtg ?i looked at LUN100 inside.there is 6 Vms like Terminal ,domaincontroller,database server) are they REAL VMS or backups?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
okay,

lun100, this can support a max size file of 512GB, so a virtual disk of 490GB is very close.

lun200, this can support a max size file of 256GB.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
I would recommend, try to change the snapshot location of the VM which is causing issues to lun200.

this may help you backup the VM.
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apollo-13Author Commented:
i do not know how can i change ? i open new question
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apollo-13Author Commented:
new question ID27831862
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Do you have Storage vMotion?

Can you create a new datastore?
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apollo-13Author Commented:
yes i have a VMotion and i can create a new datastore.

whats your idea with vMotion?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Storage vMotion?

What type of VMware License do you have?
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Paul SolovyovskyCommented:
You would need to have Enterprise licensing for storage vmotion but if you shutdown the VM and migrate cold that will accomplish the same task but will make the VM unavailable until it's done migrating
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apollo-13Author Commented:
I have  Enterprise licensing for storage vmotion. Yes sometimes i do migration. But i do migration just move my Vms between ESX servers ,like from esx1 to esx2
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Paul SolovyovskyCommented:
you can also do live migration between datastores..instead of host you can click datastore.  Just make sure you have a datastore with enough storage to handle VMs and block size to match.  Vacate old datastore, delete, and re-create with 8mb block size. Afterwards you can migrate the VM back to the new datastore.  Mkae sure you have block size on both source and destination with a large block size
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apollo-13Author Commented:
live migration between datastores mean WITHOUT SHUTDOWN?
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apollo-13Author Commented:
when i try Vmotion migration there is 3 questions which one do i need to chooese?
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apollo-13Author Commented:
vm
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apollo-13Author Commented:
wm1
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
those options are the correct options.

what is the block size for the new datastore?

it needs to be at least 4MB
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