Corrupt Information Store

LJC · Joined: 06 Aug 2007 Posts: 3

Has anyone come across this problem before?

Background

We had a server running SBS2000. The backup software was reporting a
corrupt Information Store and the event log said that it might be a
hardware problem. To resolve this problem we had a new server built
with SBS2003 as the operating system. After restoring all the mailboxes
we are still getting the same errors (below). Surely it cannot be a
hardware problem but a exchange problem???

When we backup the Info Store it fails at the same point everytime, but
it does not tell you where the corruption occurs or which mailbox is
affected.

Please can anyone help?

Backup - \\SBSERVER\Microsoft Information Store\First Storage Group
WARNING: "\\SBSERVER\Microsoft Information Store\First Storage Group
\Mailbox Store (SBSERVER)" is a corrupt file.
This file cannot verify.
Verify - \\SBSERVER\Microsoft Information Store\First Storage Group
WARNING: "Mailbox Store (SBSERVER)" is a corrupt file.
This file cannot verify.

Information Store (392) The database page read from the file "C:\Program
Files\Exchsrvr\mdbdata\priv1.edb" at offset 233549824
(0x000000000debb000) for 4096 (0x00001000) bytes failed verification due
to a page checksum mismatch. The expected checksum was 1663824791
(0x632bf397) and the actual checksum was 1664086935 (0x632ff397). The
read operation will fail with error -1018 (0xfffffc06). If this
condition persists then please restore the database from a previous
backup. This problem is likely due to faulty hardware. Please contact
your hardware vendor for further assistance diagnosing the problem.

Archived from group: microsoft>public>exchange2000>information>store

Leif Pedersen [MVP] · Joined: 05 Aug 2007 Posts: 94

Hi,

How did you restore the mailboxes (by restoring the complete database??).

This might help you troubleshoot the -1018 error:
http://support.microsoft.com/default.aspx?scid=kb;en-us;314917

Leif

"LJC" skrev i en meddelelse@news.microsoft.com...
>
> Has anyone come across this problem before?
>
> Background
>
> We had a server running SBS2000. The backup software was reporting a
> corrupt Information Store and the event log said that it might be a
> hardware problem. To resolve this problem we had a new server built
> with SBS2003 as the operating system. After restoring all the mailboxes
> we are still getting the same errors (below). Surely it cannot be a
> hardware problem but a exchange problem???
>
> When we backup the Info Store it fails at the same point everytime, but
> it does not tell you where the corruption occurs or which mailbox is
> affected.
>
> Please can anyone help?
>
>
>
> Backup - \\SBSERVER\Microsoft Information Store\First Storage Group
> WARNING: "\\SBSERVER\Microsoft Information Store\First Storage Group
> \Mailbox Store (SBSERVER)" is a corrupt file.
> This file cannot verify.
> Verify - \\SBSERVER\Microsoft Information Store\First Storage Group
> WARNING: "Mailbox Store (SBSERVER)" is a corrupt file.
> This file cannot verify.
>
>
>
> Information Store (392) The database page read from the file "C:\Program
> Files\Exchsrvr\mdbdata\priv1.edb" at offset 233549824
> (0x000000000debb000) for 4096 (0x00001000) bytes failed verification due
> to a page checksum mismatch. The expected checksum was 1663824791
> (0x632bf397) and the actual checksum was 1664086935 (0x632ff397). The
> read operation will fail with error -1018 (0xfffffc06). If this
> condition persists then please restore the database from a previous
> backup. This problem is likely due to faulty hardware. Please contact
> your hardware vendor for further assistance diagnosing the problem.

LJC · Joined: 06 Aug 2007 Posts: 3

We exported all the information contained in each mailbox to outlook
personal folders (*.pst). We then imported the personal folders on to
the new server.

Regards

Lyndon

> Hi,
>
> How did you restore the mailboxes (by restoring the complete database??).
>
> This might help you troubleshoot the -1018 error:
> http://support.microsoft.com/default.aspx?scid=kb;en-us;314917
>
> Leif
>
> "LJC" skrev i en meddelelse
> @news.microsoft.com...
> >
> > Has anyone come across this problem before?
> >
> > Background
> >
> > We had a server running SBS2000. The backup software was reporting a
> > corrupt Information Store and the event log said that it might be a
> > hardware problem. To resolve this problem we had a new server built
> > with SBS2003 as the operating system. After restoring all the mailboxes
> > we are still getting the same errors (below). Surely it cannot be a
> > hardware problem but a exchange problem???
> >
> > When we backup the Info Store it fails at the same point everytime, but
> > it does not tell you where the corruption occurs or which mailbox is
> > affected.
> >

> > Please can anyone help?
> >
> >
> >
> > Backup - \\SBSERVER\Microsoft Information Store\First Storage Group
> > WARNING: "\\SBSERVER\Microsoft Information Store\First Storage Group
> > \Mailbox Store (SBSERVER)" is a corrupt file.
> > This file cannot verify.
> > Verify - \\SBSERVER\Microsoft Information Store\First Storage Group
> > WARNING: "Mailbox Store (SBSERVER)" is a corrupt file.
> > This file cannot verify.
> >
> >
> >
> > Information Store (392) The database page read from the file "C:\Program
> > Files\Exchsrvr\mdbdata\priv1.edb" at offset 233549824
> > (0x000000000debb000) for 4096 (0x00001000) bytes failed verification due
> > to a page checksum mismatch. The expected checksum was 1663824791
> > (0x632bf397) and the actual checksum was 1664086935 (0x632ff397). The
> > read operation will fail with error -1018 (0xfffffc06). If this
> > condition persists then please restore the database from a previous
> > backup. This problem is likely due to faulty hardware. Please contact
> > your hardware vendor for further assistance diagnosing the problem.

LJC · Joined: 06 Aug 2007 Posts: 3

Sorry in addition to the earlier post the mailboxes were recreated from
scratch and were empty prior to importing the personal folders.

Regards

Lyndon
>
> We exported all the information contained in each mailbox to outlook
> personal folders (*.pst). We then imported the personal folders on to
> the new server.
>
> Regards
>
> Lyndon
>
> > Hi,
> >
> > How did you restore the mailboxes (by restoring the complete database??).
> >
> > This might help you troubleshoot the -1018 error:
> > http://support.microsoft.com/default.aspx?scid=kb;en-us;314917
> >
> > Leif
> >
> > "LJC" skrev i en meddelelse
> > @news.microsoft.com...
> > >
> > > Has anyone come across this problem before?
> > >
> > > Background
> > >
> > > We had a server running SBS2000. The backup software was reporting a
> > > corrupt Information Store and the event log said that it might be a
> > > hardware problem. To resolve this problem we had a new server built
> > > with SBS2003 as the operating system. After restoring all the mailboxes
> > > we are still getting the same errors (below). Surely it cannot be a
> > > hardware problem but a exchange problem???
> > >
> > > When we backup the Info Store it fails at the same point everytime, but
> > > it does not tell you where the corruption occurs or which mailbox is
> > > affected.
> > >
>
> > > Please can anyone help?
> > >
> > >
> > >
> > > Backup - \\SBSERVER\Microsoft Information Store\First Storage Group
> > > WARNING: "\\SBSERVER\Microsoft Information Store\First Storage Group
> > > \Mailbox Store (SBSERVER)" is a corrupt file.
> > > This file cannot verify.
> > > Verify - \\SBSERVER\Microsoft Information Store\First Storage Group
> > > WARNING: "Mailbox Store (SBSERVER)" is a corrupt file.
> > > This file cannot verify.
> > >
> > >

Martin Chisholm [MSFT] · Joined: 05 Aug 2007 Posts: 1

That is a single bit flip. It is indeed usually a hardware problem.

Some things to consider:

-Does the new server have exactly the same hardware configuration?
Occasionally some models do have manufacturing defects (yes, even big
name manufacturers).

-Did you copy the file over to the new server at all? If so, the
corrupted data would still be there (it didn't sound like you did
from your answer below, but I thought I'd ask explicitly).

-Is the corruption at the same offset? And the same expected/actual
values? That would be suspicious if you didn't copy the files from
the old server.

-Or it could be bad drivers or firmware. Do you have the latest
drivers and firmware updates? Anti-virus software is also a common
suspect.

Not that it helps much now, but Exchange 2003 SP1's Error Correcting
Code would have automatically fixed the below bit flip.

-martin

Boring-but-necessary-disclaimer: This posting is provided "AS IS" with
no warranties, and confers no rights.

In article ,
LJC wrote:
>
>Sorry in addition to the earlier post the mailboxes were recreated from
>scratch and were empty prior to importing the personal folders.
>
>Regards
>
>Lyndon
>>
>> We exported all the information contained in each mailbox to outlook
>> personal folders (*.pst). We then imported the personal folders on to
>> the new server.
>>
>> Regards
>>
>> Lyndon
>>
>> > Hi,
>> >
>> > How did you restore the mailboxes (by restoring the complete database??).
>> >
>> > This might help you troubleshoot the -1018 error:
>> > http://support.microsoft.com/default.aspx?scid=kb;en-us;314917
>> >
>> > Leif
>> >
>> > "LJC" skrev i en meddelelse
>> > @news.microsoft.com...
>> > >
>> > > Has anyone come across this problem before?
>> > >
>> > > Background
>> > >
>> > > We had a server running SBS2000. The backup software was reporting a
>> > > corrupt Information Store and the event log said that it might be a
>> > > hardware problem. To resolve this problem we had a new server built
>> > > with SBS2003 as the operating system. After restoring all the mailboxes
>> > > we are still getting the same errors (below). Surely it cannot be a
>> > > hardware problem but a exchange problem???
>> > >
>> > > When we backup the Info Store it fails at the same point everytime, but
>> > > it does not tell you where the corruption occurs or which mailbox is
>> > > affected.
>> > >
>>
>> > > Please can anyone help?
>> > >
>> > >
>> > >
>> > > Backup - \\SBSERVER\Microsoft Information Store\First Storage Group
>> > > WARNING: "\\SBSERVER\Microsoft Information Store\First Storage Group
>> > > \Mailbox Store (SBSERVER)" is a corrupt file.
>> > > This file cannot verify.
>> > > Verify - \\SBSERVER\Microsoft Information Store\First Storage Group
>> > > WARNING: "Mailbox Store (SBSERVER)" is a corrupt file.
>> > > This file cannot verify.
>> > >
>> > >

kcirredd · Joined: 16 Aug 2007 Posts: 1

I encountered this problem with backup exec10d, after a lot of
troubleshooting we realized that ex10d recognixed a file as corrupt if it
has been modifide before verification is completed, eg. our backup rins
overnight but the verification process is not completed before users starts
using exchange in the morning of the following day, when the backup program
reaches the information store to verify, it cannot as it result it reports
the exchange information store as "corrupt" there is an option to ignore but
a will have to search and get back to you on it.

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