I do exactly what you are describing.
I have a very simple setup compared to most of the other admins here. I
have a 24 slot library with two LTO2 drives. Additionally I have two 500 GB
adv_file type devices.
I stage from disk to tape via custom script when ssid's reach 48 hours old.
My library is directly attached to the Networker Server via SCSI and so my
drives fight for SCSI bandwidth if I attempt to clone/stage to both drives.
There are several threads in the archives of NETWORKER-L about being able to
backup and restore/stage/clone at the same time from/to adv_file devices.
There are situations where a task will be quiesced until the device is no
longer busy. Even with the RO device available.
HTH,
--Shawn
----- Original Message -----
From: "Teresa Biehler" <tpbsys AT RIT DOT EDU>
To: <NETWORKER AT LISTSERV.TEMPLE DOT EDU>
Sent: Tuesday, April 18, 2006 8:32 PM
Subject: [Networker] Disk backup and concurrent operations
We're planning out our backup to disk environment. The plan is to write
backups to disk and then clone the data to tape for offsite storage.
The data will be retained on disk for some number of days to improve our
recover time.
Questions for folks that are doing this:
- How many concurrent clone jobs can run? Is this in any way
dependent on the tape pools that are being cloned to?
- Can the cloning begin while the backups are still running?
If so, how many clone jobs can run while backups are happening?
Thanks.
Teresa
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