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date: Tue, 24 May 2005 09:52:50 -0400,
group: microsoft.public.exchange2000.information.store
back
Re: Backups
Checkpoint advancement is stopped during a backup. The checkpoint can
only be 1024 log file generations deep. If it reaches that depp,
things will start failing with JET_errCheckpointDepthTooDeep (-614).
Beacuse 1024 log files multiplied by 5 MB is 5 GB, this means you'd
need 5 GB of logged data before hitting the limit.
While this sounds like a lot, it can easily be hit if the backup
software prompts the user to insert a new tape, but nobody is at the
console to see the message. After a while (could be a few days), the
checkpoint-too-deep error will bring things down in an ugly manner.
You probably won't see it, but you *did* ask what could happen. :)
I'm not a PR guy, but I have a feeling that the wording I'm supposed
to use is something like 'We are evaluating eliminating this problem
in the next release of Exchange.'.
-martin
Boring-but-necessary-disclaimer: This posting is provided "AS IS" with
no warranties, and confers no rights.
In article ,
Leif Pedersen [MVP] wrote:
>
>Hi,
>
>Other than a performance hit everything should still function.
>
>Leif
>
>"newsgroups" skrev i en meddelelse
>news:%236cAhfGYFHA.3212@TK2MSFTNGP10.phx.gbl...
>> Hello,
>>
>> Is there any disadvantage, other than time, to backing up the infostore
>> while users are hitting it at it's peak? I schedule my backups over
>night,
>> but by adding an archiving scheme to my email, i'm cutting down on my
>backup
>> windows. Just wondering what will happen if a backup is still running
>when
>> users are hitting exchange in the morning to check email!
>>
>> Thanks!
>>
>>
>
>
date: Thu, 26 May 2005 18:35:05 +0000 (UTC)
author: Martin Chisholm [MSFT]
Re: Backups
thanks guys... good info martin!
luckily i have an hp ultraium ssl 1016 (16 tape).. so i'm good on the
'insert tape' at least!
Sonny
"Martin Chisholm [MSFT]" wrote in message
news:d754sp$sdl$1@drizzle.com...
> Checkpoint advancement is stopped during a backup. The checkpoint can
> only be 1024 log file generations deep. If it reaches that depp,
> things will start failing with JET_errCheckpointDepthTooDeep (-614).
>
> Beacuse 1024 log files multiplied by 5 MB is 5 GB, this means you'd
> need 5 GB of logged data before hitting the limit.
>
> While this sounds like a lot, it can easily be hit if the backup
> software prompts the user to insert a new tape, but nobody is at the
> console to see the message. After a while (could be a few days), the
> checkpoint-too-deep error will bring things down in an ugly manner.
>
> You probably won't see it, but you *did* ask what could happen. :)
>
> I'm not a PR guy, but I have a feeling that the wording I'm supposed
> to use is something like 'We are evaluating eliminating this problem
> in the next release of Exchange.'.
>
> -martin
>
> Boring-but-necessary-disclaimer: This posting is provided "AS IS" with
> no warranties, and confers no rights.
>
>
> In article ,
> Leif Pedersen [MVP] wrote:
>>
>>Hi,
>>
>>Other than a performance hit everything should still function.
>>
>>Leif
>>
>>"newsgroups" skrev i en meddelelse
>>news:%236cAhfGYFHA.3212@TK2MSFTNGP10.phx.gbl...
>>> Hello,
>>>
>>> Is there any disadvantage, other than time, to backing up the infostore
>>> while users are hitting it at it's peak? I schedule my backups over
>>night,
>>> but by adding an archiving scheme to my email, i'm cutting down on my
>>backup
>>> windows. Just wondering what will happen if a backup is still running
>>when
>>> users are hitting exchange in the morning to check email!
>>>
>>> Thanks!
>>>
>>>
>>
>>
>
>
date: Fri, 27 May 2005 08:02:56 -0400
author: newsgroups
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