Have you thought of splitting out into Two or more TSM Servers to reduce
DB sizes? It may not be possible, but it might help.
See Ya'
Howard
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Neil Sharp
Sent: Monday, February 04, 2008 11:32 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] TSM DR restore query
Thanks Charles for responding
The majority of the restore time is spent in formatting the DB and logs.
They are actually restoring from a fileclass backup of the TSM DB. I
know when they told me these times I found them hard to believe as well.
On 04/02/2008, Hart, Charles A <charles_hart AT uhc DOT com> wrote:
>
> I think the first question id 45GB restored in 5Hours, that's 5 GB
> hour / 1.3MBS Second... What kind of Tape Drive are you using, is it
> on its own HBA (Don't Mix Disk / Tape I/O down same path)
>
> Sounds like you have an I/O challenge. As far as the Idea below,
> never tried, but take in consideration that if the TSM DR box is in a
> different geographical location you'll have to use FCIP or Disk Frame
> replication to gain access to those volumes.
>
> -----Original Message-----
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf
> Of Neil Sharp
> Sent: Monday, February 04, 2008 10:28 AM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: [ADSM-L] TSM DR restore query
>
> Hello I was wondering if anybody could help or advise with the
> following question.
>
> I need to devise a solution to speed up DR for one of my customers.
> Currently their DR solution is the classic restore from TSM DB tape
> and then load all of the off site tapes into the DR library and then
> perform the client restores. The problem is that the TSM DB restore
> can take in the region of 5 hours. The TSM DB is 45GB.
>
> I was thinking of using the following method. Can any one see any
> issues with this?
>
> *On the primary TSM server:*
>
> They have a Windows 2003 Standard Edition TSM server. I am proposing
> that we set up TSM DB and log mirroring, one copy on local disk and
> the second copy on SAN attached disk.
>
> *On the DR site:*
>
> They also have a TSM 2003 Standard Edition TSM server. When DR is to
> be tested / invoked, I would propose that they re-zone the DR TSM
> server to access the LUN that contains the DB and logs. Ensure that
> the DR TSM server's dsmserv.dsk points to the mapped drives.
>
> Note the the TSM tape library is also SAN attached.
>
> Any comments / experiences would be appreciated.
>
>
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