Re: Capacity planning (Repost dute to no response)

Geoffrey,

I do pretty standard metrics by tape count, occupancy, CPU utilization,
paging, network interface utilization, etc, for my capacity planning.  I'm
afraid there's really no formula per se that's useful in the real world.

The TSM documentation describes how you can take your %change, server size,
count, growth expectation, etc, to size your server.  With those numbers you
can guestimate your various capacities (network, storage).  However, getting
those numbers is impossible (I won't even qualify that with the word
"near").  If you can get your customers to pony up reliable information and
give you growth projections, %change, etc, then that's the real magic and
I'd like to hear about it.  Additionally, I don't know of anything except
the standard "watch and see what happens" style standard performance
monitoring and tuning to size for CPU and RAM.

Good luck.

Alex Paschal
Freightliner, LLC
(503) 745-6850 phone/vmail

-----Original Message-----
From: Gill, Geoffrey L. [mailto:GEOFFREY.L.GILL AT SAIC DOT COM]
Sent: Monday, March 31, 2003 9:27 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Capacity planning (Repost dute to no response)


I have no idea if my posts are getting through to the list since time to
time I find no responses or get returned mail telling me I'm not allowed to
post. Here is a question I posed and heard nothing.

I am wondering how you all have managed capacity plans on your TSM Servers.
Does anyone have a basic formula to figure out how to determine how what you
have, is capable of doing?

I am currently running TSM 5.1.6.3 on AIX 4.3.3. The server is an M80 with
5GB memory, but at the moment only 2CPU's. There are 10 3590 tape drives in
a 3494 library. All the drives are fiber and direct attached. The OS resides
on internal disks. The db, logs and disk pools are spread across 2 trays of
36GB SSA disks (not on diskpool disks). Currently I have approximately 160
nodes backing up, supposedly what it shows below.

 Archive Past 24 Hours(Gigabytes)
---------------------------------
                623.7771384420000


  BACKUP Past 24 Hours(Gigabytes)
---------------------------------
                171.1356259960000


Restore Past 24 Hours(Gigabytes)
---------------------------------
                  6.7243592550000

Geoff Gill
TSM Administrator
NT Systems Support Engineer
SAIC
E-Mail:    <mailto:gillg AT saic DOT com> gillg AT saic DOT com
Phone:  (858) 826-4062
Pager:   (877) 905-7154