If you want to work with multiple Adv_Files a time and if
Adv_Files are used as temp location before being staged
to another pool (tape based), to work with multiple disk devices
a time, you have to label them into different pools because backups
on disk device will not span accross different volumes. Then,
load-ballance your clients to use these different new pools.
Then, as staging is just moving data from a pool to another,
just stage from multiple file dev a time to one or more tape device
to one more "tape" pool.
The major advantages you will have are
-more than 1 staging session a time (faster)
-you may proceed to a recover by stopping 1 stage without
blocking all staging process
-better disk usage and perf.
-less impact/damage in case of file system corruption for unstaged yet ssid.
HTH,
Thierry
________________________________
De: Legato NetWorker discussion
Date: mer. 17/08/2005 12:26
À: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Objet : Re: [Networker] Staging to Advanced File Type devices
Mark Davis wrote:
>
> We have 10 TB of "Advanced File Type" disk used to stage our data. The
> disk is broken up into 14 700 GB file systems. The problem we are having
> is that NetWorker does not distribute the data evenly across these file
> systems. When selecting a device for backup, NetWorker always seems to
> pick the disk that has the most data. If one disk is at 8% full, and
> another is at 75% full, it will use the one with 75%.
>
> Of course this makes sense when backing up to tape, but causes a variety
> of problems when using disk. For example, it makes it very difficult to
> maintain a uniform retention period for the data on disk.
>
> Has anyone else run into this problem, and is there a way to even out the
> data distribution.
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