tkimball wrote:
> I'm going to assume the 28 TB is being used as adv_file devices, and not an
> actual VTL.
>
Yep.
>
> Having smaller mounts for adv_file are useful if you'd like to keep the
> various backups segregated using pools. For example, I have separate disk
> devices for my Full and Incremental backups, using different RAID groups
> underneath.
>
> Another advantage to multiple disk devices is that each one can then stream
> to its own tape drive for cloning or staging, speeding up both operations (if
> you have the same number of tape drives, and have the hardware to drive them
> well enough from the disk).
>
> The big thing you'll need to watch for is that each adv_file device uses two
> device 'slots' under server/SN licensing rules.
>
> --TSK
>
>
Thank for your reply.
I managed to sort out the problem with the filesystem size. I was preparing in
case I had to create smaller (4TB partitions).
The max size of an ext3 filesystem is dependent on the filesystem block size,
which if 16TB with a 4k block size. It tried a few options but settled on one
16TB and one 9TB filesystems.
On the advice of out consultant, we created directories within each partition
which were associated with different adv_file types.
tammclaughlin wrote:
> Hello,
>
> I have a new backup system running NW 7.1 on top of RHEL 5.1 64 bit with 28TB
> direct attached storage and I am unsure how best to partition up the space.
>
> Currently we back up around 4TB /month which is based on a full every week
> with incrementals every other day.
>
> It was suggested to create one large ext3 partition (lvm) but I encountered
> an error while trying to resize the existing partition as I was rushing out
> of work tonight. I had thought that it was not possible to create a large
> 28TB partition on ext3 but what probably happened was that I was trying to
> resize while the partition was still mounted. So I will pop into work early
> tomorrow and try to resize again.
>
> However, is there any advantage is having smaller partition sizes?
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