ADSM-L

Re: [ADSM-L] Question on Collocation

2017-11-09 11:19:28
Subject: Re: [ADSM-L] Question on Collocation
From: Marc Lanteigne <marclanteigne AT CA.IBM DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Thu, 9 Nov 2017 16:14:33 +0000
Hi Jennifer,

>   I removed the node from the collocation group and added it to the new
collocation group
The way you did it, or just not part of a group gives the same result.  So
your way was good, I wasn't trying to say it wasn't, just that you could
have saved a few steps and get the same end result.

> Will the move nodedata command move the data from the tapes in the old
collocation group to tapes in the new collocation group?
Yes, but not exactly the way you describe it.  Keep in mind that the server
is only using collocation settings when writing data, but not when reading
it.  When reading, it doesn't look at collocation settings, it reads the
data from wherever it is.

The move nodedata will read the client data and will move it onto new
volumes following the collocation settings for the storage pool and the
node.  Details here:
https://www.ibm.com/support/knowledgecenter/SSEQVQ_8.1.2/srv.reference/r_cmd_nodedata_allfs_move.html



-
Thanks,
Marc...
________________________________________________________
Marc Lanteigne
Accelerated Value Specialist for Spectrum Protect
416.478.0233 | marclanteigne AT ca.ibm DOT com
Office Hours:  Monday to Friday, 7:00 to 16:00 Eastern

Follow me on: Twitter, developerWorks, LinkedIn


-----Original Message-----
From: Drammeh, Jennifer C [mailto:jdrammeh AT U.WASHINGTON DOT EDU]
Sent: Thursday, November 9, 2017 12:00 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] Question on Collocation

Marc,

   I removed the node from the collocation group and added it to the new
collocation group - where it resides by itself. Will the move nodedata
command move the data from the tapes in the old collocation group to tapes
in the new collocation group? Also, do you know how to initiate a FULL new
backup of the entire system.


Thanks!


Jennifer

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Marc Lanteigne
Sent: Friday, November 03, 2017 3:07 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] Question on Collocation

Hi Jennifer,

The backup always only applies to the filesystem backup, not systemstate.
You’ll have to change the mode of the systemstate backup to get a full.

Or use move nodedata to move it all together.

BTW, you would just have needed to remove the node from the collocation
group. Nodes not in a collocation group are collocated by node.

Marc...

Sent from my iPhone using IBM Verse

On Nov 3, 2017, 6:11:07 PM, jdrammeh AT U.WASHINGTON DOT EDU wrote:

From: jdrammeh AT U.WASHINGTON DOT EDU
To: ADSM-L AT VM.MARIST DOT EDU
Cc:
Date: Nov 3, 2017, 6:11:07 PM
Subject: [ADSM-L] Question on Collocation


 I use collocation and I have a node where the System Admin has requested
that his data from a particular node be isolated on tapes by itself. I
created a collocation group and have associated this one node with the new
group. This node had previously been backing up to a different collocation
group. I created a new Policy Domain and associated the node with it as
well. This policy domain is set to send the data direct to tape instead of
going to our diskpool. I also modified the settings on the server to allow
this system to have 2 mount points.
 I had the SA launch a "full" manual backup from the GUI - using the
"Always Backup" option. Here are the problems I am seeing.
 1.       I can see that the system state data when to a tape that was
already used by other nodes (which tells me the collocation is not working)
 2.       It only mounted 1 tape in a drive while performing the backup
 3.       The metrics at the end showed that it inspected 283 GB of data
and only transferred 175 GB which means it did not actually perform a full
backup.
 Any ideas to help get a FULL backup of this data alone on a single 1 or 2
tapes and ideally using multiple tape drives to speed things up? (for
backup and restore)  Thanks!
 Jennifer
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