ADSM-L

Re: [ADSM-L] TSM 6.3 server spec

2013-11-14 12:41:22
Subject: Re: [ADSM-L] TSM 6.3 server spec
From: Skylar Thompson <skylar2 AT U.WASHINGTON DOT EDU>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Thu, 14 Nov 2013 09:39:07 -0800
We average about 5TB/day, but spike up to 50-100TB a few times a year. We
use Servergraph for our accounting, but you can get most of the information
you need out of the server accounting file.

On Thu, Nov 14, 2013 at 07:36:06PM +0200, Swartz, Jerome wrote:
> 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

--
-- 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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