I´ve received  many input that I still trying to figure out and test which one 
is suitable for our environment, thanks for the reply.

Regards
Ben

-----Oprindelig meddelelse-----
Fra: backup [mailto:backup AT zweistra DOT nl] 
Sendt: 18. januar 2009 03:50
Til: 'EMC NetWorker discussion'; Ben Deng
Emne: RE: [Networker] Backup to Adv-file device

We have had the same problem a few times with a twist.
We use staging and cloning. But during backups the staging does copy data to 
the tapes but the disk is not purged fast enough to free up the space so 
backups continue.
One of the main design flaws was that some servers have so much data on it that 
in case of high watermark it is already too late to unload.

We now have the following design .
If you want to keep 2 days of data on a buffer AND use staging, than the buffer 
needs to be at least 50 % bigger so it should hold at least 3 days of data. 
Second part is reconfigure the groups so the large clients are spread out over 
the entire backup-window. Thirdly all clients that predictably exceed the 
limits put them in a group that backs up to tape in stead of buffer.
Our next problem was/is that we have 1450 clients in one backup-server with
3 main sites.
We are now splitting up the one environment into multiple backup-zones that are 
no larger than 750 clients per backup server and spread over at least 2 
storagenodes per zone. This also reduces the load on the buffers significantly.

Lastly changing to networker 7.4.2, Gbit network and bundle nics into 4 Gbit 
speed on storage node, makes the window larger and the backups faster so there 
is more time to do housekeeping on the buffers.
---
Basically the answer to your question is yes you can overvome the problem but a 
t a cost beit time and work or money and more hardware. Nevertheless it is 
worth exploring all the options. We did and we are quite happy now.

-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On 
Behalf Of Ben Deng
Sent: Sunday, December 28, 2008 12:22 PM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: [Networker] Backup to Adv-file device

Hi everyone and Happy new year,

 

I've a frustrating problem with backup to Adv-file devices, I've 5 Adv-file 
device volumes with approximately 6TB in each. Every night the backup groups 
will start and make backup to these volumes, but when a volumes is full, the 
backup group will not switch to the next free volume, it just hang there until 
I manually free some spaces. It there a way to configure Adv-file devices to 
overcome this problem or is it a Networker design flaw.

 

Regards,

Ben Deng

 

 

 


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