Thanks for the response Skylar, how much data do we backup on average per day?
We do around 1TB in total daily so I am sure we require a lot less disk space.
Regards,
Jerome
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Skylar Thompson
Sent: 14 November 2013 05:55 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] TSM 6.3 server spec
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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--
-- Skylar Thompson (skylar2 AT u.washington DOT edu)
-- Genome Sciences Department, System Administrator
-- Foege Building S046, (206)-685-7354
-- University of Washington School of Medicine
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