| Backup very slow after update from 8.5.3 to 9.1.1 [message #132128] |
Wed, 05 October 2016 12:19  |
Zakk
Messages: 12
Registered: March 2004
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hello,
i am running a small Kerio Connect on a Windows 2012r2 Server,
10 Users with ~40GB mailstore.
system was running on 8.5.3, a full backup to backup server had taken
nearly 1,5 hours, the *.zip (splitted to 2Gb parts) are ~22 GB.
10 days ago i updated Kerio Connect to latest version 9.1.1.
since update, the full backup is taking around 2 hours per 2GB part,
means the whole backup is now taking ~22 hours !
nothing else was changed, backup machine and kerio connect machine had been rebooted,
no change. as far as i know there are no parameters you can adjust for backup performance.
is this a bug in 9.x version ?
why is backup so slow now?
thx,
zakk
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| Re: Backup very slow after update from 8.5.3 to 9.x [message #132933 is a reply to message #132897] |
Fri, 18 November 2016 20:47  |
McIrish
Messages: 254
Registered: October 2011
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I too have noticed this. Our mail store is around 450GB and I start the backup at 1AM on a Sunday. Most weeks I have to kill the process at 10AM on Monday because it's still not done and it locks people out of their mailbox while the backup is running. I never used to have that problem but I noticed it started around V9 or 9.1
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| Re: Backup very slow after update from 8.5.3 to 9.x [message #132942 is a reply to message #132933] |
Sun, 20 November 2016 11:02 |
Zakk
Messages: 12
Registered: March 2004
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i am glad to hear, that i am not the only one.
just for the record:
windows 2012r2 - kerio connect 8.5.3 (32 bit) = everything fine
windows 2012r2 - kerio connect 9.x (64 bit) = snail backup
nothing else changed, no problems known.
up to date hardware: ESX 5.5 with XEON 6-core, 64Gb ram, SSD + 4TB drives
backup is made to network folder, usual write speed is 100 mb/sec an up.
i would be glad if the devolopers investigate that behaviour.
[Updated on: Sun, 20 November 2016 11:04] Report message to a moderator |
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| Re: Backup very slow after update from 8.5.3 to 9.x [message #132950 is a reply to message #132942] |
Mon, 21 November 2016 14:04 |
Maerad
Messages: 275
Registered: August 2013
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Zakk wrote on Sun, 20 November 2016 11:02i am glad to hear, that i am not the only one.
just for the record:
windows 2012r2 - kerio connect 8.5.3 (32 bit) = everything fine
windows 2012r2 - kerio connect 9.x (64 bit) = snail backup
nothing else changed, no problems known.
up to date hardware: ESX 5.5 with XEON 6-core, 64Gb ram, SSD + 4TB drives
backup is made to network folder, usual write speed is 100 mb/sec an up.
i would be glad if the devolopers investigate that behaviour.
Did you change anything else with the new Mailserver? We run Windows Server 2012 HyperV Host with Kerio installed in a HyperV Guest on Server 2012.
Kerio itself is on a Raid 1 SAS 15k HDD VHDX and needs around 7 min. for the daily differential backup and 6 hours for the full backup on Sunday. And that with only 2 vcore for the OS...
So there seems to be something quite wrong ...
I would suggest the following:
- Try to copy a bigger file to the remote folder, just to be sure, that the network works fine (you won't believe how often I was under the impression I didn't change anything else, and then there was this little change I did with the new Update etc. pp. that messed everything up) 
- Erase all old Backups and do them from scratch, maybe something is messed up inside
- Change the Backuplocation to another Server / PC for testing purposes
- Check / disable any anti-virus scanner on the mail server and the receiving server (maybe something changed within the backup or exe and a virus tool scans the folders / data)
- Do a "manual" backup - right click on the store folder > send > zip > select the remote folder
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