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date: 21 Feb 2006 16:20:59 -0800,
group: microsoft.public.exchange2000.information.store
back
Re: Information Store Corruption: 478
Nick,
Thanks a lot for your input. I've already ran an exmerge export just to
be sure.
All third-party software has been removed, too.
Actually the error occurs with ntbackup.
I'll clone the box to new (isolated) hardware and see how options 3&5
work out.
Hapy to hear that you suggest 3 would be the best plan, I'll try this
first.
Yet maybe you (or someone) else can guide me a bit more about why an
exmerge export works if there is corruption within the data store?
Of course I'll have to consider the possibility of a hardware defect.
thanks again!
Nick Gillott [MVP] wrote:
> 1. By all means check.
> 2. Do this anyway just in case. A safe backup is a good backup.
> 3. Probably the best plan.
> 4. Check sounds good. Hard repair does not.
> 5. That's up to you. I wouldn't.
>
> 478 could be a SCSI controller problem (from memory it was what threw mine
> last time. I changed the terminator and things became good again. But ensure
> you get at least an exmerge first before doing anything.
>
> If you are using BE for a backup, try ntbackup just in case. I've seen one
> of them fail where the other one works. Also, if using ntbackup, try an
> ntbackup to disk instead of tape. See if that helps.
>
> wrote in message
> news:1140567659.609555.282550@g14g2000cwa.googlegroups.com...
> > Hi all,
> >
> > I've only discovered now that the Information Store is throwing error
> > 478 about checksum mismatchtes when doing a full backup. To my shame
> > this went unnoticed for almost 2 months now.
> > Since no user has been complaining about anything Exchange/Outlook
> > related I'm a bit confused as to what effects this database corruption
> > has.
> > All backups I own are not 'restorable' due to the error 478. What
> > options do I have?
> >
> > 1. Check for incompatible third party software
> > http://support.microsoft.com/?kbid=840013
> >
> > 2. Use Exmerge to copy all data ouf of IS and then back into a new
> > store
> > http://support.microsoft.com/kb/259688/
> >
> > 3. Create new store and move the mailboxes to it from within AD/XCHG.
> >
> > 4. Check for hardware failures, event sinks and finally hard repair the
> > database
> > http://support.microsoft.com/?id=810333
> >
> > 5. Hard repair with Eseutil /p
> > http://support.microsoft.com/kb/259851/
> >
> > What option is most likely to succeed without failure (exmerge, move
> > boxes or hard repair), since doing a hard repair is often associated
> > with guaranteed data loss?
> >
> > Thanks for sharing your knowledge.
> >
date: 22 Feb 2006 12:17:18 -0800
author: unknown
Re: Information Store Corruption: 478
Exmerge will only take clean stuff out of the DB.
wrote in message
news:1140639438.750307.180170@g47g2000cwa.googlegroups.com...
> Nick,
>
> Thanks a lot for your input. I've already ran an exmerge export just to
> be sure.
> All third-party software has been removed, too.
> Actually the error occurs with ntbackup.
>
> I'll clone the box to new (isolated) hardware and see how options 3&5
> work out.
> Hapy to hear that you suggest 3 would be the best plan, I'll try this
> first.
>
> Yet maybe you (or someone) else can guide me a bit more about why an
> exmerge export works if there is corruption within the data store?
>
> Of course I'll have to consider the possibility of a hardware defect.
>
> thanks again!
>
> Nick Gillott [MVP] wrote:
>> 1. By all means check.
>> 2. Do this anyway just in case. A safe backup is a good backup.
>> 3. Probably the best plan.
>> 4. Check sounds good. Hard repair does not.
>> 5. That's up to you. I wouldn't.
>>
>> 478 could be a SCSI controller problem (from memory it was what threw
>> mine
>> last time. I changed the terminator and things became good again. But
>> ensure
>> you get at least an exmerge first before doing anything.
>>
>> If you are using BE for a backup, try ntbackup just in case. I've seen
>> one
>> of them fail where the other one works. Also, if using ntbackup, try an
>> ntbackup to disk instead of tape. See if that helps.
>>
>> wrote in message
>> news:1140567659.609555.282550@g14g2000cwa.googlegroups.com...
>> > Hi all,
>> >
>> > I've only discovered now that the Information Store is throwing error
>> > 478 about checksum mismatchtes when doing a full backup. To my shame
>> > this went unnoticed for almost 2 months now.
>> > Since no user has been complaining about anything Exchange/Outlook
>> > related I'm a bit confused as to what effects this database corruption
>> > has.
>> > All backups I own are not 'restorable' due to the error 478. What
>> > options do I have?
>> >
>> > 1. Check for incompatible third party software
>> > http://support.microsoft.com/?kbid=840013
>> >
>> > 2. Use Exmerge to copy all data ouf of IS and then back into a new
>> > store
>> > http://support.microsoft.com/kb/259688/
>> >
>> > 3. Create new store and move the mailboxes to it from within AD/XCHG.
>> >
>> > 4. Check for hardware failures, event sinks and finally hard repair the
>> > database
>> > http://support.microsoft.com/?id=810333
>> >
>> > 5. Hard repair with Eseutil /p
>> > http://support.microsoft.com/kb/259851/
>> >
>> > What option is most likely to succeed without failure (exmerge, move
>> > boxes or hard repair), since doing a hard repair is often associated
>> > with guaranteed data loss?
>> >
>> > Thanks for sharing your knowledge.
>> >
>
date: Fri, 24 Feb 2006 09:14:15 -0000
author: Nick Gillott [MVP]
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