This is what we use: two P550's as our TSM servers. (Disk: DS4800's & Tape:
3584's (four LTO4 drives & 600 slots) per datacenter.)
We have around 400 nodes total, 2-3 TB change per night, 5 policy domains.
We have two datacenters - one TSM server per datacenter. We "inherited" two
P520's from a project that changed to Windows in mid-project. So, those P520's
were beefed-up & became our Disaster Recovery Servers. 1-P550 & 1-P520 in each
datacenter with our SAN providing mirrored disk & tape.
So, the P550 in one datacenter is "tied" to the offline P520 in the other
datacenter. We occasionally refresh the "mksysb" from P550 to P520.
Theoretically, we could lose an entire datacenter and keep both TSM servers
running with full data and tapes.
I agree with the thoughts on P570 versus P550/P520 as LPAR versus Physical
needs. So far, we just haven't the need to justify going to LPAR for business
or technical reasons.
Has anyone done the new p6-Blades? JS22?
I have our TSM "ARCHIVE" server on a B80. It only has about a dozen nodes with
data that we have to keep "monthly backups". It has a large TSM-database and
tapes, but not too heavily used. I've been debating this on a Blade.
Troy Barnhart, Sr. Systems Programmer
tbarnhart AT rcrh DOT org
Regional Health, Inc.
353 Fairmont Boulevard
Rapid City, South Dakota 57701
PH: 605-716-8352 / FAX: 605-716-8302
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Paul Zarnowski
Sent: Monday, June 23, 2008 8:21 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] IBM p 520 vs. p 570
Nancy,
We are just beginning to think about replacing the older of our two TSM
servers. I am thinking that a p6 570 may be overkill, but we are looking
at a p6 550 as it has a bit more head room than the 520 (in case we need it).
..Paul
At 06:21 PM 6/16/2008, Nancy R. Brizuela wrote:
>I'm sorry--I forgot to add some additional information. Our p-570 has
>four 1.9GHz CPU's (Power 5+) vs. two 4.2 GHz CPU's (Power 6) for the
>p-520.
>
> > _____________________________________________
> > From: Nancy R. Brizuela
> > Sent: Monday, June 16, 2008 4:04 PM
> > To: ADSM-L AT VM.MARIST DOT EDU
> > Subject: IBM p 520 vs. p 570
> >
> > Hi All,
> >
> > We are thinking of replacing our IBM p 570 with a p 520. This server
> > would be used exclusively for TSM backups. We back up about 1.5 TB
> > every night. We have two tape libraries, one about 50 miles from here
> > and one locally, where we send all the backup data (about 66 TB
> > total). We have 8 tape drives locally and 5 tape drives at the remote
> > library. Our database and storage pools are on our SAN.
> >
> > What do folks think about the p 570 performance vs. the p 520--better
> > or worse? Has anyone made this same switch or is anyone using a p
> > 520? If so, how are things going? What's your environment look like?
> >
> > Thanks!
> >
> > Nancy Brizuela, CPA
> > Systems Programmer, Senior
> > University of Wyoming
> > IBM/Unix Systems Group
> > Ivinson Room 238
> > (307)766-2958
> >
> >
--
Paul Zarnowski Ph: 607-255-4757
Manager, Storage Services Fx: 607-255-8521
719 Rhodes Hall, Ithaca, NY 14853-3801 Em: psz1 AT cornell DOT edu
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