Thx Steve, I think you solved this for me.

Louw Pretorius
_______________________________
Informasie Tegnologie
Stellenbosch Universiteit
 
There are only 10 kinds of people in the world: Those who understand
binary and those who don't

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Steven Harris
Sent: Saturday, December 10, 2005 00:06
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] Split Storage Pool across Devclass

Hi Pretorius.

no, you can't directly spread a tape pool across multiple libraries, if
that is what you are asking.

You have two choices,

The first is to split the hierarchy into multiple node -> diskpool ->
tapepool streams.  Data is directed into one or the other streams using
different managementclasses, which are assigned via client options
(options file or client option sets), or you can set up more than one
policy domain and have the classes in one domain point to one hierarchy
and in the other point to the second, then assign nodes to domains to
split the load.

The easier option may be to set up your second tape device as the next
pool in the hierarchy

e.g.  diskpool->tape1pool->tape2pool

and just as you would from disk to tape you can set tape1 to tape2
migration thresholds, force migrations and so on.

A couple of caveats though,  you can if i recall correctly, only use one
migration process per sequential storage pool, so the tape to tape
migration may be slow and tie up drives for along time.  Also, when
migrating, TSM moves the node that has the most data in this storagepool
first, and this may be undesirable depending on the particlular
cirumstances on your server.

Of course, combinations of these two approaches are also possible.


HTH
Steve


Steven Harris

AIX and TSM Administrator
steve AT stevenharris DOT info


On 10/12/2005, at 7:27 AM, Pretorius Louw <louw AT sun.ac DOT za> wrote:

> Hi guys, I dont know if this is a stupid question but I cant find this

> anywhere.
>
> Im running low on space and want to split my Tapepool across more than

> 1 TapeDevice, is this possible?
>
> Cheers
>
> Louw Pretorius
>
> _______________________________
>
> Informasie Tegnologie
>
> Stellenbosch Universiteit
>
>
>
> There are only 10 kinds of people in the world: Those who understand 
> binary and those who don't
>
>
>
>