Shadow Copies on WSS2003
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Shadow Copies on WSS2003

 
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Mark Lidstone
Guest
Posted: Thu Jun 23, 2005 4:17 pm    Post subject: Shadow Copies on WSS2003 Reply with quote
Hi all,

I'm having problems with shadow copies on a Windows 2003 NAS box. Does
anyone know if there are any limitations of shadow folders on Windows
Storage Server 2003?

Basically, I can only see 9 shadow copies when it should have been
producing them twice a day for the past couple of months. I read in
http://www.microsoft.com/technet/prodtechnol/windowsserver2003/library/DepKit/261cfe7d-4509-4310-b2f7-2222f0d15f07.mspx
that "If you plan to store the shadow copies on the same volume as the
user files, note that a burst of disk I/O can cause all shadow copies to
be deleted. If you cannot tolerate the sudden deletion of shadow copies,
use a volume that will not be shadow copied, preferably on separate
disks, for storing shadow copies.", so I tried using VSSADMIN.exe to put
the storage on another disk with the following command:

vssadmin add shadowstorage /For=D: /On=E:

and I got the following error:

Error: Maximum number of shadow copy storage associations already reached

so I went to the GUI and found the "Located on this volume" option set
to "D:" and greyed out so I cannot change it.

Is this a limitation of Windows Storage Server or is it something else?

Many thanks for any help,

Mark Lidstone
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Pat [MSFT]
Guest
Posted: Thu Jun 23, 2005 11:30 pm    Post subject: Re: Shadow Copies on WSS2003 Reply with quote
It's not a limit in WSS2k3.

You might want to try 'vssadmin list shadows<enter>' and see what is set
now.


Pat

"Mark Lidstone" <mark.lidstone@bmtseatech.remove.co.uk> wrote in message
news:ezXuuZ$dFHA.3488@tk2msftngp13.phx.gbl...
Quote:
Hi all,

I'm having problems with shadow copies on a Windows 2003 NAS box. Does
anyone know if there are any limitations of shadow folders on Windows
Storage Server 2003?

Basically, I can only see 9 shadow copies when it should have been
producing them twice a day for the past couple of months. I read in
http://www.microsoft.com/technet/prodtechnol/windowsserver2003/library/DepKit/261cfe7d-4509-4310-b2f7-2222f0d15f07.mspx
that "If you plan to store the shadow copies on the same volume as the
user files, note that a burst of disk I/O can cause all shadow copies to
be deleted. If you cannot tolerate the sudden deletion of shadow copies,
use a volume that will not be shadow copied, preferably on separate disks,
for storing shadow copies.", so I tried using VSSADMIN.exe to put the
storage on another disk with the following command:

vssadmin add shadowstorage /For=D: /On=E:

and I got the following error:

Error: Maximum number of shadow copy storage associations already reached

so I went to the GUI and found the "Located on this volume" option set to
"D:" and greyed out so I cannot change it.

Is this a limitation of Windows Storage Server or is it something else?

Many thanks for any help,

Mark Lidstone
Back to top
Mark Lidstone
Guest
Posted: Tue Jul 05, 2005 4:17 pm    Post subject: Re: Shadow Copies on WSS2003 Reply with quote
Pat [MSFT] wrote:

Quote:
It's not a limit in WSS2k3.

You might want to try 'vssadmin list shadows<enter>' and see what is set
now.


Pat

"Mark Lidstone" <mark.lidstone@bmtseatech.remove.co.uk> wrote in message
news:ezXuuZ$dFHA.3488@tk2msftngp13.phx.gbl...

Hi all,

I'm having problems with shadow copies on a Windows 2003 NAS box. Does
anyone know if there are any limitations of shadow folders on Windows
Storage Server 2003?

Basically, I can only see 9 shadow copies when it should have been
producing them twice a day for the past couple of months. I read in
http://www.microsoft.com/technet/prodtechnol/windowsserver2003/library/DepKit/261cfe7d-4509-4310-b2f7-2222f0d15f07.mspx
that "If you plan to store the shadow copies on the same volume as the
user files, note that a burst of disk I/O can cause all shadow copies to
be deleted. If you cannot tolerate the sudden deletion of shadow copies,
use a volume that will not be shadow copied, preferably on separate disks,
for storing shadow copies.", so I tried using VSSADMIN.exe to put the
storage on another disk with the following command:

vssadmin add shadowstorage /For=D: /On=E:

and I got the following error:

Error: Maximum number of shadow copy storage associations already reached

so I went to the GUI and found the "Located on this volume" option set to
"D:" and greyed out so I cannot change it.

Is this a limitation of Windows Storage Server or is it something else?

Many thanks for any help,

Mark Lidstone



Hi,


Sorry for the long time since the reply.

I get lots of the following:

Contents of shadow copy set ID: {<snip>}
Contained 1 shadow copies at creation time: 7/5/2005 12:00:07 PM
Shadow Copy ID: {<snip>}
Original Volume: (D:)\\?\Volume{<snip>}\
Shadow Copy Volume:
\\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy<number>
Originating Machine: <MachineA>
Service Machine: <MachineA>
Provider: 'Microsoft Software Shadow Copy provider 1.0'
Type: ClientAccessible
Attributes: Persistent, Client-accessible, No auto release, No
writers,
Differential

They all appear to be stored in the same place.

Thanks,

Mark
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