We use RHEL on x86_64 hardware, but the disk requirements should be pretty
platform-independent. Each of our TSM servers have the following for DB2:
2x 600GB 10K SAS drives in RAID-1 for active/archive log data
3x 4x 300GB 15K SAS drives in RAID-10 for DB2 (12x drives total)
The active/archive log produces almost entirely sequential reads and writes
so fewer disks works well for that. DB2 itself is almost entirely random
reads and writes and can easily become a bottleneck if you don't provision
lots of fast disks. Stay away from parity-based RAID as well, because
that's a huge performance hit for random writes.
One of our TSM servers has been scaled to 620 million distinct file version
(1.3 billion if you count the files in copy pools).
Our disk storage pools are composed of multiple volumes of either 8x 300GB
or 5x 600GB 10K SAS drives (depending on drive tray). Each server has been
10 and 15 of these volumes, and is provisioned to give ~4 days of peak
backup throughput. This gives us some flexibility in doing tape library
maintenance, and to absorb large peaks in backups (these happen a few times
a year so it's worth it for us). We use 64GB FILE volumes within these disk
volumes.
On Thu, Nov 14, 2013 at 05:43:34PM +0200, Swartz, Jerome wrote:
> Hi folks,
>
> I am in the process of starting a fresh TSM installation on new hardware.
>
> Server 2008 R2 - TSM 6.3x
>
> I am busy reading the performance tuning guide and was wondering what you are
> currently using disk wise and a breakdown of you disk setup and how its
> working out for you.
>
> Regards,
>
> Jerome
>
>
>
>
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