ADSM-L

Re: [ADSM-L] Question about NDMP and TSM.

2014-07-16 22:53:43
Subject: Re: [ADSM-L] Question about NDMP and TSM.
From: "Prather, Wanda" <Wanda.Prather AT ICFI DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Thu, 17 Jul 2014 02:51:33 +0000
Interesting point about NDMP and dedup.
Do you have any experience with it?  What kind of dedup ratios did you see?


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Steven Harris
Sent: Tuesday, July 15, 2014 9:48 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] Question about NDMP and TSM.

And as a bonus, ndmp storage pools cannot be reclaimed and this means that they 
hold tapes until the last data has expired.  TSM format storage pools can be 
reclaimed, and if they are file storage pools can be deduped as well.


Regards

Steve

Steven Harris
TSM Admin
Canberra Australia



On 16 July 2014 05:38, Ron Delaware <ron.delaware AT us.ibm DOT com> wrote:

> Ricky,
>
> The configuration that you are referring to is what could be 
> considered the 'Traditional' implementation of NDMP.  As you have 
> found for yourself, there are a number of restrictions on how the data can be 
> managed though.
>
> If you configure the NDMP environment so that a Tivoli Storage Manager 
> controls the data flow instead of the NetApp Appliance, you have more 
> options
>
>
> This configuration will allow you backup up to TSM storage pools 
> (Disk, VTL, Tape), send copies offsite, because the TSM Server 
> controls the destination.  You have the option to use a traditional 
> TSM Client utilizing the NDMP protocol or have the TSM server perform 
> the backup and restores using the BACKUP NODE and RESTORE NODE 
> commands. It a table of contents storage pool (disk based only highly 
> recommended) you can perform single file restores.  you can also 
> create virtual filespace pointers to your vfiler that will allow you 
> to run simultaneous backups of the vfiler, that could shorten your backup and 
> restore times.
>
>
>
>
>
> Best Regards,
>
> _________________________________________________________
> * Ronald C. Delaware*
> IBM Level 2 - IT Plus Certified Specialist – Expert IBM Corporation | 
> Tivoli Software IBM Certified Solutions Advisor - Tivoli Storage IBM 
> Certified Deployment Professional Butterfly Solutions Professional
> 916-458-5726 (Office
> 925-457-9221 (cell phone)
>
> email: *ron.delaware AT us.ibm DOT com* <ron.delaware AT us.ibm DOT com> 
> *Storage 
> Services Offerings* 
> <http://www-01.ibm.com/software/tivoli/services/consulting/offers-stor
> age-optimization.html>
>
>
>
>
>
> From:        "Schneider, Jim" <jschneider AT USSCO DOT COM>
> To:        ADSM-L AT vm.marist DOT edu
> Date:        07/15/2014 12:19 PM
> Subject:        Re: [ADSM-L] Question about NDMP and TSM.
> Sent by:        "ADSM: Dist Stor Manager" <ADSM-L AT vm.marist DOT edu>
> ------------------------------
>
>
>
> Ricky,
>
> The Isilon uses the OneFS file system and TSM views it as one huge 
> file system.  If backing up to disk, TSM will attempt to preallocate 
> enough space to back up the entire allocated space on the Isilon. 
> Defining Virtual File systems will not help because directory quota 
> information is not passed to TSM, and TSM only sees the total allocated space.
>
> We were able to back up the Isilon to disk when we started on a test 
> system with little data on it, around 25 GB.  When we attempted to 
> implement the same backups on a second, well-populated Isilon we ran 
> into the space allocation problem.
>
> When backing up to tape, TSM assumes you have unlimited storage 
> available and is able to run VFS backups.  We use Virtual File Space 
> Mapping (VFS) and back up to tape.
>
> Refer to EMC SR#55554646, TSM PMR 23808,122,000.
>
> Jim Schneider
> United Stationers
>
> -----Original Message-----
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU 
> <ADSM-L AT VM.MARIST DOT EDU>] On Behalf Of Plair, Ricky
> Sent: Tuesday, July 15, 2014 1:21 PM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: [ADSM-L] Question about NDMP and TSM.
>
> I have been asked to look into backing up our EMC Isilon using our TSM 
> server.
>
> Everything I read,  seems to point to backing this NDMP device to tape.
>
> Problem is, we do not use tape to backup production.
>
> I have researched and found a few articles about backing the NDMP 
> device to tape but, there seem to be more cons than pros.
>
> Is there anybody backing up a NDMP device to disk that can give me 
> some pros and,  how they are using disk for this task.
>
>
> I appreciate your time!
>
>
>
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