Switching to RLV:
Some CPU time that would be used for OS overhead for filesystem is freed. This
could be used for running one more TSM instance?
Memory that would be used for filesystem cache is freed. This could be used by
TSM for buffers?
I don't know what effect either would have on overal
On Jul 31, 2007, at 11:59 PM, Stuart Lamble wrote:
I am not going to enter into a debate about the relative merits of
raw volumes versus files on filesystems, as I have insufficient
direct knowledge to judge either way (I'm trusting a more senior
colleague to make the right call there. :)
I'll
On 29/07/2007, at 10:03 PM, Stapleton, Mark wrote:
From: ADSM: Dist Stor Manager on behalf of Craig Ross
TSM is installed on Solaris 10
This is something that popped right out for me. Do you have your
storage pools located on raw logical volumes or mounted
filesystems? If the latter, that mig
In the TSM admin guide for AIX, look up "raw volumes".
It has examples.
> Evening I have been watching these comments with interest as we are
> currently in the process of building a new TSM server.
> Discussing with colleagues we are baffled by how you create the TSM log
> or DB on a raw present
Manager"
<[EMAIL PROTECTED] Subject
.EDU> Re: TSM performance very poor,
Recovery log is being pinned
07/31/2007 08:16
AM
Evening I have been watching these comments with interest as we are
currently in the process of building a new TSM server.
Discussing with colleagues we are baffled by how you create the TSM log
or DB on a raw presented Lun without creating at least a JFS for a mount
point first. We are running AI
Thanks guys.
All this advise is much appreciated.
For the record my TSM servers seems to have returned to more normal
routines.
However the log is still being pinned and log fills up to about 12% then
flushes, not ideal but acceptable.
I am starting to wonder if my install has always had the log p
.
I think you are right about the Log - it need not be spread across
multiple volumes. It's only got one writer.
Your RAID type can affect the performance of the Disk Storage Pools and
the Database dramatically. In particular, RAID5 is very poorly suited
for this, because it is 50% writes. RAID5 i
Could you elaborate on why the log should be in smaller volumes? I have
always heard the DB should, because it opens multiple threads with multiple
volumes, but since the log is sequentially written to for the most part, I
can't figure out why that should be in multiple volumes. Thanks.
On 7/30/
Your DB and Log shold be RAW as well, and in small vols. (ie 12GB log
should be in 2-3GB VOls, DB, vols, depengin on size of db should be 5-10GB
vols. Also try to make sure the raw logical vols are evenly spread
accross as many LUNs as possible.
Charles Hart
"Stapleton, Mark" <[EMAIL PROTEC
From: ADSM: Dist Stor Manager on behalf of Craig Ross
>TSM is installed on Solaris 10
This is something that popped right out for me. Do you have your storage pools
located on raw logical volumes or mounted filesystems? If the latter, that
might be your problem. Solaris has traditionally had inc
Thanks for all input guys,
Firstly sorry for lack of detail.
TSM is installed on Solaris 10, No I did not do any benchmarking, as we were
not replacing any existing setup just adding more, I have 6 LTO drives
already installed and about 17TB of SAN storage which is Primary Random, I
have since ad
Do the client backup sessions pin the log? What is the throughput on the
actual client session and are these backups direct to disk? If the
sessions are cancelled does the system come back to life?
15 TB of SATA sounds like a lot of storage. how has this been
added/configured- What raw throughput
Assuming the SATA are on AIX, were the logical volumes set up to hold
the volumes
defined as JFS2?
>>> [EMAIL PROTECTED] 07/27/2007 2:30:54 PM >>>
Do the client backup sessions pin the log? What is the throughput on
the
actual client session and are these backups direct to disk? If the
sessions ar
Is the SATA setup as disk storage pools? Is it filesystem or raw
logical volumes?
What is the OS? vmstat or top/topas may give some ideas.
What is the network transport? Fast ethernet?
[RC]
On Jul 27, 2007, at 2:49 AM, Craig Ross wrote:
10 days ago I Recently added 15TB of SATA storage and a
You might also check your diskpool volume count. If its low, assuming
your doing raw logical volumes, you might want to try decreasing the
size of your volumes and thereby increasing the count of your volumes .
A small number of large volumes does not allow several clients or
processes to stream da
Craig -
You need to perform analysis to identify problem cause, where the TSM
Problem Determination Guide and Performance Tuning Guide will help.
Log pinning is due to prolonged transactions, and is aggravated by
sluggish networking and sluggish TSM servicing of transactions (often
due to underl
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