Hi John,
You are skipping the integrity check already and you are not sending
any data across the network. This really only leaves a few things
left to check, the mailbox history, the Exchange Server "prepare"
function,
and the snapshot itself.
I recommend opening a PMR to see where the issue is.
The support team can get a trace and find out which
step the delay is occurring in.
Del
----------------------------------------------------
"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> wrote on 02/27/2015
03:46:19 AM:
> From: John Keyes <rakyr AT GMX DOT NET>
> To: ADSM-L AT VM.MARIST DOT EDU
> Date: 02/27/2015 03:48 AM
> Subject: Aw: Re: [ADSM-L] Re: [ADSM-L] Exchange Backup with
> Flashcopy Manager EXTREMELY slow
> Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
>
> Hello guys,
>
> the time for our Exchange Backups is still steadily increasing. As
> you can see below, a vss snapshot now takes 5 times(!) as much time
> as it did just 3 weeks ago. These log excerpts are all from the same
> server and database and are all incremental backups (except the one
> on 02/22/2015, which is full backup). Im now absolutely sure this is
> not normal but I have no Idea what the problem could be. The
> exchange admin assured me that he changed nothing on the server.
> The exchange database volumes and the backup volumes all reside on
> the same storage, which is connected through fibrechannel. So
> network traffic cant be a problem.
> Anyone got some ideas?
>
> 02/05/2015 13:26:19 ANS1750I Volume mount point 'c:
> \exchangedatabases\dag1-01\dag1-01.log' is mounted to volume 'C:
> \ExchangeDatabases\DAG1-01\DAG1-01.log'. Using snapshot volume for
> 'C:\ExchangeDatabases\DAG1-01\DAG1-01.log' to backup.
> 02/05/2015 13:28:20 VSS Backup operation completed with rc = 0.
> 02/05/2015 13:28:20 Elapsed Processing Time: 209.85 seconds
> 02/06/2015 16:10:10
> ------------------------------------------------------------
> 02/07/2015 19:10:39 ANS1750I Volume mount point 'c:
> \exchangedatabases\dag1-01\dag1-01.log' is mounted to volume 'C:
> \ExchangeDatabases\DAG1-01\DAG1-01.log'. Using snapshot volume for
> 'C:\ExchangeDatabases\DAG1-01\DAG1-01.log' to backup.
> 02/07/2015 19:12:42 VSS Backup operation completed with rc = 0.
> 02/07/2015 19:12:42 Elapsed Processing Time: 206.52 seconds
> 02/08/2015 01:33:13
> ------------------------------------------------------------
> 02/15/2015 00:17:25 ANS1750I Volume mount point 'c:
> \exchangedatabases\dag1-01\dag1-01.log' is mounted to volume 'C:
> \ExchangeDatabases\DAG1-01\DAG1-01.log'. Using snapshot volume for
> 'C:\ExchangeDatabases\DAG1-01\DAG1-01.log' to backup.
> 02/15/2015 00:20:32 VSS Backup operation completed with rc = 0.
> 02/15/2015 00:20:32 Elapsed Processing Time: 406.69 seconds
> 02/16/2015 00:13:56
> ------------------------------------------------------------
> 02/20/2015 00:17:24 ANS1750I Volume mount point 'c:
> \exchangedatabases\dag1-01\dag1-01.log' is mounted to volume 'C:
> \ExchangeDatabases\DAG1-01\DAG1-01.log'. Using snapshot volume for
> 'C:\ExchangeDatabases\DAG1-01\DAG1-01.log' to backup.
> 02/20/2015 00:19:54 VSS Backup operation completed with rc = 0.
> 02/20/2015 00:19:54 Elapsed Processing Time: 423.87 seconds
> 02/21/2015 00:14:38
> ------------------------------------------------------------
> 02/21/2015 00:20:30 ANS1750I Volume mount point 'c:
> \exchangedatabases\dag1-01\dag1-01.log' is mounted to volume 'C:
> \ExchangeDatabases\DAG1-01\DAG1-01.log'. Using snapshot volume for
> 'C:\ExchangeDatabases\DAG1-01\DAG1-01.log' to backup.
> 02/21/2015 00:23:42 VSS Backup operation completed with rc = 0.
> 02/21/2015 00:23:42 Elapsed Processing Time: 550.66 seconds
> 02/22/2015 00:13:08
> ------------------------------------------------------------
> 02/22/2015 00:23:56 ANS1750I Volume mount point 'c:
> \exchangedatabases\dag1-01\dag1-01.log' is mounted to volume 'C:
> \ExchangeDatabases\DAG1-01\DAG1-01.log'. Using snapshot volume for
> 'C:\ExchangeDatabases\DAG1-01\DAG1-01.log' to backup.
> 02/22/2015 00:31:09 VSS Backup operation completed with rc = 0.
> 02/22/2015 00:31:09 Elapsed Processing Time: 1,087.95 seconds
> 02/23/2015 00:13:50
> ------------------------------------------------------------
> 02/23/2015 00:20:13 ANS1750I Volume mount point 'c:
> \exchangedatabases\dag1-01\dag1-01.log' is mounted to volume 'C:
> \ExchangeDatabases\DAG1-01\DAG1-01.log'. Using snapshot volume for
> 'C:\ExchangeDatabases\DAG1-01\DAG1-01.log' to backup.
> 02/23/2015 00:23:43 VSS Backup operation completed with rc = 0.
> 02/23/2015 00:23:43 Elapsed Processing Time: 601.17 seconds
> 02/24/2015 00:03:46
> ------------------------------------------------------------
> 02/24/2015 00:11:25 ANS1750I Volume mount point 'c:
> \exchangedatabases\dag1-01\dag1-01.log' is mounted to volume 'C:
> \ExchangeDatabases\DAG1-01\DAG1-01.log'. Using snapshot volume for
> 'C:\ExchangeDatabases\DAG1-01\DAG1-01.log' to backup.
> 02/24/2015 00:15:55 VSS Backup operation completed with rc = 0.
> 02/24/2015 00:15:55 Elapsed Processing Time: 737.75 seconds
> 02/25/2015 21:03:26
> ------------------------------------------------------------
> 02/25/2015 21:13:07 ANS1750I Volume mount point 'c:
> \exchangedatabases\dag1-01\dag1-01.log' is mounted to volume 'C:
> \ExchangeDatabases\DAG1-01\DAG1-01.log'. Using snapshot volume for
> 'C:\ExchangeDatabases\DAG1-01\DAG1-01.log' to backup.
> 02/25/2015 21:18:49 VSS Backup operation completed with rc = 0.
> 02/25/2015 21:18:49 Elapsed Processing Time: 930.87 seconds
> 02/26/2015 21:03:34
> ------------------------------------------------------------
> 02/26/2015 21:15:08 ANS1750I Volume mount point 'c:
> \exchangedatabases\dag1-01\dag1-01.log' is mounted to volume 'C:
> \ExchangeDatabases\DAG1-01\DAG1-01.log'. Using snapshot volume for
> 'C:\ExchangeDatabases\DAG1-01\DAG1-01.log' to backup.
> 02/26/2015 21:21:19 VSS Backup operation completed with rc = 0.
> 02/26/2015 21:21:19 Elapsed Processing Time: 1,073.57 seconds
>
> > Gesendet: Dienstag, 24. Februar 2015 um 13:36 Uhr
> > Von: "Billaudeau, Pierre" <P.Billaudeau AT SAQ.QC DOT CA>
> > An: ADSM-L AT VM.MARIST DOT EDU
> > Betreff: Re: [ADSM-L] Aw: Re: [ADSM-L] Exchange Backup with
> Flashcopy Manager EXTREMELY slow
> >
> > Hi John,
> > I had a similar situation with Exchange 2010 TSM DP
> backups and the reason was the VM had been Vmotioned from one ESX
> to another. Lan speed went from 1Gbs to 100Gbs. You might want to check
this.
> >
> > Pierre Billaudeau
> > Administrateur stockage
> >
> > -----Message d'origine-----
> > De : ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] De la
> part de Jeanne Bruno
> > Envoyé : 23 février 2015 15:43
> > À : ADSM-L AT VM.MARIST DOT EDU
> > Objet : Re: [ADSM-L] Aw: Re: [ADSM-L] Exchange Backup with
> Flashcopy Manager EXTREMELY slow
> >
> > Hello. we skip integrity check as well. Backups stored on a DS3512
device
> >
> > -----Original Message-----
> > From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On
> Behalf Of John Keyes
> > Sent: Monday, February 23, 2015 2:47 PM
> > To: ADSM-L AT VM.MARIST DOT EDU
> > Subject: [ADSM-L] Aw: Re: [ADSM-L] Exchange Backup with Flashcopy
> Manager EXTREMELY slow
> >
> > Thank you Chavdar Cholev and Jeanne Bruno for sharing. I forgot to
> tell, we do skip the integrity check, and there are only passive
> Databases on the server.
> > Are your backups going to TSM server or to a local storage? Im
> interested either way.
> >
> > Best Regards,
> > John
> >
> >
> >
> > Gesendet: Montag, 23. Februar 2015 um 20:20 Uhr
> > Von: "Chavdar Cholev" <chavdar.cholev AT GMAIL DOT COM>
> > An: ADSM-L AT VM.MARIST DOT EDU
> > Betreff: Re: [ADSM-L] Exchange Backup with Flashcopy Manager
> EXTREMELY slow We have ~ 2TB full exchange backup and it takes ~ 20
> hours. There is exch db consistency check before backup which takes
> considerable amount of time.
> > It can be switched off... but it is not recommnded....
> >
> > On Monday, 23 February 2015, John Keyes <rakyr AT gmx DOT net> wrote:
> >
> > > Hello fellow TSM Admins!
> > >
> > > I'm struggling with Exchange Backup which over the course of the
last
> > > few Days (mainly since the last full backup this weekend) takes
about
> > > 3-4 times as long as before.
> > > We have Exchange 2013 DAG with 48 Databases and a dedicaded VM to do
> > > the Backups (Flashcopy Manager 4.1.1, Backupdestination=local, on an
> > > IBM V7000 Storage).
> > > Right now even an incremental backup of 1 database takes ~12
minutes,
> > > but the volume is only 30GB big and has only 5GB (5000 x 1MB Files)
on
> > > it. Two weeks ago this would only take 3 Minutes.
> > > A Full backup takes about half an hour (so I couldn't even complete
a
> > > full backup for every database in one day). I also tried to
> > > full-backup the same database twice right after one another,
> with no difference.
> > >
> > > This can hardly be normal, can it? Has anyone had the same problems
> > > and maybe could point me in the right direction?
> > > Also it would be great if anyone could share how much time their
> > > backups take...
> > >
> > > Best regards,
> > > John
> > >
> >
> > ------------------
> >
> >
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