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nehaban
Contributor
Contributor
‎09-18-2015 01:42 PM
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Exchange VM getting hung after backup

Hi,

I have strange issue where after backup my VM gets into hung state and i had to reset it to bring back up.

Did anyone face the same issue?

1 Solution

Accepted Solutions
bansne
Enthusiast
Enthusiast
‎09-19-2015 08:45 AM
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This could possibly due to quiesce option enabled. or , To avoid this issue, disable the SYNC driver or stop the service generating heavy I/O before taking a snapshot.

Under heavy loads, the delay in I/O can become too long, which affects many time-sensitive applications, including the services which generate the heavy I/O (such as an Exchange Server). If writes issued by these services get delayed for too long, the service may stop and issues error messages.



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3 Replies
bansne
Enthusiast
Enthusiast
‎09-18-2015 01:50 PM
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what is the level of backup configured is it image level or data disk ?

nehaban
Contributor
Contributor
‎09-18-2015 01:57 PM
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Its full VM backup configured to take snaphshot .

Backup triggers the quiescing of the VM and flushes the disk contents out of the file system cache.

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bansne
Enthusiast
Enthusiast
‎09-19-2015 08:45 AM
Jump to solution

This could possibly due to quiesce option enabled. or , To avoid this issue, disable the SYNC driver or stop the service generating heavy I/O before taking a snapshot.

Under heavy loads, the delay in I/O can become too long, which affects many time-sensitive applications, including the services which generate the heavy I/O (such as an Exchange Server). If writes issued by these services get delayed for too long, the service may stop and issues error messages.