ADSM-L

Re: [ADSM-L] TSM 7.1.3 and Directory-container storage pools

2015-09-26 08:57:41
Subject: Re: [ADSM-L] TSM 7.1.3 and Directory-container storage pools
From: Stefan Folkerts <stefan.folkerts AT GMAIL DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Sat, 26 Sep 2015 10:20:34 +0200
Okay, so the move data command did not make it into 7.1.3, it is currently
worked on and will become available some time in the future.
IBM talked about this at lenght at the TSM Symposium in Dresden this past
week.
If you want to switch from a file type of storagepool to a directory
container storage pool and you have 20%+ free space they suggest that you
can create the directory container storagepool on the same filesystems that
contain the file device type storagepool and then change the management
classes to point to the directory container storagepool.

This way you get the advantages of the new type of storagepool for all new
data entering the system but not for the existing data that doesn't expire,
you will have to wait for the move command in a later version of Spectrum
Protect to be able to move the remaining data to the directory container
storage pool.

The use cases I see currently for the directory container storagepools now
are mostly for new setups at customer sites that don't require an
additional tape-based copypool, these must then of course replicate to a
customer owned second site or our cloud based location.

I really like the fact that the server requirements did not go thru the
roof for the inline deduplication and that the disk type for the larger
setups in now based on nearline disks due to the fact the data only needs
to be writen once and not writen (backup) read (indentify) and then partly
read/writen again (reclaim).



On Thu, Sep 24, 2015 at 3:18 PM, Ryder, Michael S <michael_s.ryder AT roche DOT 
com
> wrote:

> Thank you Deirdre
>
> I'm providing this excerpt from FAQ below -- please tell me this is going
> to be streamlined in the future?  (If so, how much longer?)
>
> This is a LOT of data movement in order to simply move "sideways" to
> another storage pool on the same server.  I'm fortunate to have a secondary
> server I can do this with, but this is going to stink for those without.
> At first glance, I'm not sure I want to take the trouble to do this.
>
> *Q6. How can I store existing data to a directory-container pool by using
> replication? Are there other techniques?*
> The only methods that you can use to store data in a directory-container
> pool are:
>
>
>    - Client store operations such as backup, archive, and space management.
>       - Node Replication from another server.
>
> You can use node replication to move data from one storage pool to another
> on the same machine, but you must replicate the data to another server to
> do this. For example, if you have a node, N1, on a server, S1, in a storage
> pool, P1, and you want to move it to a directory-container storage pool,
> P2, you must complete the following steps:
>
>
>    1. Replicate all the data for node N1 to server S2.
>       2. Rename node N1 to N1.X.
>       3. Replicate the node to server S1 from server S2.
>       4. Change the management class and the copy group destinations, or
>       both, in the policy on server S1 to ensure that the data from
> server S2 is
>       stored the directory-container storage pool, P2.
>
> When all the data from node N1 is stored on server S1, you can delete the
> file spaces for node N1 on servers S1 and S2, remove node N1.X from server
> S1, and remove node N1 from server S2. To switch replication directions,
> you must use the REMOVE REPLNODE command after the first replication (from
> S1 to S2) on both servers and then re-enable replication on server S2 to
> server S1. You cannot use the node replication on a single file space
> within a node. The entire node must be replicated.
>
>
> Best regards,
>
> Mike <http://rbbuswiki.bbg.roche.com/wiki/ryderm_page:start>, x7942
> RMD IT Client Services <http://rmsit.dia.roche.com/Pages/default.aspx>
>
> On Thu, Sep 24, 2015 at 7:09 AM, Deirdre O'Callaghan <DEIRDREC AT ie.ibm DOT 
> com>
> wrote:
>
> > Thank you for your feedback and questions about directory-container
> storage
> > pools.
> >
> >    For more information about  frequently asked questions in relation to
> >    directory-container storage pools, see the following wiki article:
> >
> >
> https://www.ibm.com/developerworks/community/wikis/home?lang=en#!/wiki/Tivoli%20Storage%20Manager/page/Directory-container%20storage%20pools%20FAQs
> >
> >    Deirdre O'Callaghan
> >    IBM Spectrum Protect Information Developer
> >
>