I would agree, I/O is typically the bottleneck. Use as many spindles
(disks) as possible for your storage pool, log and DB volumes.
--
Joshua S. Bassi
Independent IT Consultant
IBM Certified - AIX/HACMP, SAN, Shark
Tivoli Certified Consultant- ADSM/TSM
Cell (408)&(831) 332-4006
[EMAIL PROTECTED]
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]] On Behalf Of
Miles Purdy
Sent: Wednesday, September 19, 2001 6:50 AM
To: [EMAIL PROTECTED]
Subject: Re: TSM on AIX question.
I'll take a 'best guess'...
The area where you should concentrate more resources is on the I/O
capacity of the server. It looks like you have six (database, log and
four disk storage pools) 'chunks' of disk to configure, not to mention
the adapters to connect to the STK and the ethernet adapters. First
count the number of adapters that you have/need. I would think you have
at least two of each. Do you prefer SCSI or SSA disks? RAID levels make
a big difference in performance.
Next find a AIX server with at least as many PCI slots as adapters you
need, watch out for the number of 64 bit slots (if you have 64-bit
adapters) and look at the number of buses with the box.
I currently use a Silver Node (in an SP) for my TSM server (this is the
same as an H50 or F50). It has 4 CPU's and 2 GB of memory, it works
well, but our environment is a little smaller. It has 3 SCSI, 1 SSA, 3
ethernet, 1 Switch adapters.
I would like to upgrade it, when I do I plan to go to a 6H1. For you I
wouldn't go with anything smaller. The M80 is good choice and if you
really want performance a 680 is at the top of the scale. I know of one
shop that uses a S70 for ONLY their TSM server. But like I said focus on
the I/O.
Miles
------------------------------------------------------------------------
-------------------
Miles Purdy
System Manager
Farm Income Programs Directorate
Winnipeg, MB, CA
[EMAIL PROTECTED]
ph: (204) 984-1602 fax: (204) 983-7557
------------------------------------------------------------------------
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>>> [EMAIL PROTECTED] 19-Sep-01 6:41:05 AM >>>
Good morning everyone.
I have been asked to look into possibly moving our TSM 4.1.3 server on
OS/390 to an AIX box. I would appreciate any information that you can
provide. Here is our existing OS/390 TSM server set up.
TSM 4.1.3 on OS/390 2.10 backing up the following clients AIX, NT,
Novell,
Win95, Win98, OS/2 (no not a misprint), OS/390 USS and SunSolaris. We
are
moving about 280GB over night and we then execute the storage pool
copies,
expiration and reclamation during the day. Some of our Domino clients
(no
we are not using TDP) take about 20 - 23 hours to backup. The TSM data
base
is currently 37.5GB and running at 78% utilization. Our primary storage
pools are 70GB, 13GB, 5GB and 1GB. We have 8 STK 9840 cartridge drives
in a
Powderhorn Silo and are using RMM to manage tapes and are running
migrations at night along with the backups. I know that it would be
faster
to stage everything to DASD and then migrate to tape but I do not have
the
DASD capacity to accomplish this..
My question is how large would my AIX box need to be to accomplish
these
same backups more efficiently?
Any input is appreciated.
Thanks,
Brian
Brian L. Nick
Systems Technician - Storage Solutions
The Phoenix Companies Inc.
100 Bright Meadow Blvd
Enfield CT. 06082-1900
E-MAIL: [EMAIL PROTECTED]
PHONE: (860)403-2281
