You already got a tons of opinions on this one but nobody commented that
your AIX admin is messing RAID levels:
RAID 0 is striping (no protection)
RAID 1 is mirroring (protected)
I can also bet he does not know the difference between RAID 10 and 0+1
(though it is easy to guess/mess).

Zlatko Krastev
IT Consultant






William Rosette <Bill_Rosette AT PAPAJOHNS DOT COM>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
07.02.2003 16:18
Please respond to "ADSM: Dist Stor Manager"


        To:     ADSM-L AT VM.MARIST DOT EDU
        cc:
        Subject:        PMR 02528, 082


Does any TSM gurus have any suggestions for our AIX admin

Thank You,
Bill Rosette
Data Center/IS/Papa Johns International
WWJD
----- Forwarded by Bill Rosette/IS/Corporate/Papa Johns on 02/07/2003
09:20
AM -----

                      Steven Schraer
                                               To:       hulls AT us.ibm DOT com
                      02/06/2003 05:09         cc:       Bill
Rosette/IS/Corporate/Papa Johns
                      PM                       Subject:  PMR 02528, 082





We are having some problems with the first link below.  The second is
working.

I have been looking at the Redbook.  Gettting started with Tivoli Storaage
Manger: Implementation Guide.

It looks like for storage pools are recommend for raid 0 (mirroring), raid
0+1 (mirroring & stripping) or raid 5 (distributed parity).  These are
safe
methods to protect the storage pool.  Do you know of any companies that
use
just raid 1 (stripping) on their storage pools?  Is there an issue of tsm
loosing a storage pool and the database having issues due to the lost
storage pool data?

Also there is no suggested raid for the tsm database.  Since we mirror the
tsm database with the tsm software, can we use raid 1 (stripping) so that
we can get a performance increase on accessing the database?  Or should we
just create the volume group with no raiding but lay the database over
multiple smaller disk (i.e. use eight 18.2 Gig disk instead of 4 36.4 Gig
disk).  What will give us the best performance.

Can I get an answer on this tomorrow morning.  I have a meeting to discuss
the performance issues tomorrow (Feb 7, 2002).

Thanks for your assistance!

Steven M. Schraer
502-261-4148
----- Forwarded by Steven Schraer/IS/Corporate/Papa Johns on 02/06/2003
04:57 PM -----

                      Bill Rosette
                                               To:       Steven
Schraer/IS/Corporate/Papa Johns@Papa Johns
                      02/06/2003 03:51         cc:
                      PM                       Subject:  PMR 02528, 082





Could not get into the link below.

Thank You,
Bill Rosette
Data Center/IS/Papa Johns International
WWJD
----- Forwarded by Bill Rosette/IS/Corporate/Papa Johns on 02/06/2003
03:53
PM -----

                      Stephen Hull
                      <hulls AT us.ibm DOT com        To:
bill_rosette AT papajohns DOT com
                      >                        cc:
                                               Subject:  PMR
                      02/06/2003 03:36
                      PM






Hi Bill,
     Here is a link to the Performance Tuning Guide on the web:
ftp://w3.ibm.com/support/ats/documents/TSM42PDG.pdf

Regards,
Stephen Hull
IBM Tivoli Storage Manager Support

More questions?  Search our new TSM KnowledgeBase at:
http://www-3.ibm.com/software/sysmgmt/products/support/IBMTivoliStorageManager.html