Hi Andy,
Make sure you have a budget for tapes. Our old NetApp solution was eating
tapes. Approx 100 LTO-4/LTO-5 a week.
And if you are going to save the Full Backup X number of weeks and then keep
diff backups for Z numbers of days. Then do you need to create multiple full
backups. One full backup with X Weeks Management Class and another full backup
with Z days Management Class that you also can continue with Diff backups.
Another issue is that if you are going to backup to Disk then will NDMP
allocate the size of the partition and not the amount of data to backup. If you
have a small diskpool, then will NDMP go direct to next storage pool.
And it is not recommended to backup to Virtual Tape Pool where TSM create
virtual tapes on another TSM Server. Try to backup direct between your NAS and
to Tape over the SAN.
Make sure you also create a "large" TOCPool. Our TOC pool on NetApp is now over
500GB large.
Also when you load the TOC to restore, does your TSM Database Size need to be
large enough temporary to contain the entire TOC.
This is a couple of tips. One thing I never tried is the new SnapDiff function
if that now works for vFilers. I think Wanda has more info about this.
Best Regards
Christian Svensson
Cell: +46-70-325 1577
E-mail: Christian.Svensson AT cristie DOT se
Säkra återläsningar.
-----Ursprungligt meddelande-----
Från: Huebner, Andy [mailto:andy.huebner AT ALCON DOT COM]
Skickat: den 2 januari 2013 17:06
Till: ADSM-L AT VM.MARIST DOT EDU
Ämne: Re: Help with NDMP dump & diff expiration
Another option, the one we use, is to use the NAS to snap a copy and keep that
snap for some number of days and only make full dumps once a week.
Andy Huebner
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Prather, Wanda
Sent: Thursday, December 27, 2012 4:41 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] Help with NDMP dump & diff expiration
Exactly what I needed to know.
Thanks Remco.
(.... and saves me the trouble of putting in another RFE!)
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Remco Post
Sent: Thursday, December 27, 2012 12:44 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] Help with NDMP dump & diff expiration
Hi,
I once raised an RFE for managing diffs separately from the fulls.
Unfortunately the answer is NO.
workaround: use multiple nodenames and make fulls on both nodenames and diffs
only with one.... yes a pita and a waste of tapes... if only IBM could think of
something better ;-)
On 27 dec. 2012, at 18:05, "Prather, Wanda" <Wanda.Prather AT ICFI DOT COM>
wrote:
> Need some help from folks doing "external" NDMP dumps, where TSM triggers the
> dump but it's done by the NAS device across the fibre to pool defined as
> TYPE=NDMPDUMP, not a standard TSM storage pool.
>
> Have a customer installing an EMC (VNX) NAS which will store multiple
> millions of .pdf files. The data change rate is very low, but can't back up
> via the CIFS mount using the regular client, too many files to scan the
> filesystem. And VNX doesn't support snapdiff.
>
> So the plan is to have the VNX do full and diff dumps under TSM control.
> Customer wants monthly fulls + daily diffs between, and wants to be able to
> go back a year.
>
> My experience is with NDMP via TCPIP in a normal TSM storage pool, but the
> thing I see there is that when you do a new full, the previous diffs don't
> expire.
>
> There's no reclaim for a pool defined as TYPE-NDMPDUMP, so how do you handle
> this without keeping 365 cartridges tied up in the vault? Is there a good
> way to blow way those "in between" diffs?
>
> Thanks and Happy New Year
>
> Wanda (NDMP is Evil) P
>
>
> Wanda Prather | Senior Technical Specialist |
> Wanda.Prather AT icfi DOT com | www.icfi.com ICF International | 401 E.
> Pratt St, Suite 2214, Baltimore, MD 21202 | 410.539.1135 (o)
--
Met vriendelijke groeten/Kind Regards,
Remco Post
r.post AT plcs DOT nl
+31 6 248 21 622
|
