zeebahi
Enthusiast
Enthusiast

Permanent Device loss and All paths down impact on VM

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Hi everyone,

I am reading  about PDL/APD as described by this link :

VMware Knowledge Base

I understand the difference between PDL and APD and the reasons these could happen. However, I am trying to understand what is the impact on VM when we do have such issues.

Will VM crash if it can not read/write to its hard disk ( read LUN behind a target)? will it just simply freeze if it can not read/write to its hard disk?

Thanks and have a good weekend!!

1 Solution

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depping
Leadership
Leadership

that depends on the OS, some OS'es will have the volume go read-only, some will crash, some will give you BSOD. So the result varies, but essentially is the same: the VM/App is pretty much useless as it is unavailable or it can't write to disk.

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2 Replies
KocPawel
Hot Shot
Hot Shot

Based on my experience it depends on many factors.

Which OS, what application you are running or just what kind of read/write operations happened.

I would assume that your VM will crash.

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depping
Leadership
Leadership

that depends on the OS, some OS'es will have the volume go read-only, some will crash, some will give you BSOD. So the result varies, but essentially is the same: the VM/App is pretty much useless as it is unavailable or it can't write to disk.

View solution in original post