TSM and Hard Disk Raid Configuration

[schoeni]

Hi!



our tsm server got out of disk space and I want to reinstall the complete system,

but I don't know the best configuration of the raid system.

raid1, raid1E, raid5 ?

where to put the database volumes

logfile, system, disk storage group volumes...

a lot of questions... ?

is it really nescesarry to use copy database volumes

should tsm do the mirroring of the data base volumes or hardware raid?

perfomance - security?



now a short description of my system:

TSM Server 4.2.2.5

Windows 2000 SP3

IBM Netfinity 5500

Dual PIII 550Mhz

512MB RAM

IBM ServeRaid II

4MM Tape

IBM 3583-72 incl. 2 drives



Harddisks now in the system:

3 x 9GB SCSI (non raid)

1 x 80GB IDE

1st SCSI disk = system (w2k, tsm)

2nd = db volumes, dblog

3rd = db copy volumes, dblog copy

ide = disk storage group



Harddisks available for future:

3 x 9GB SCSI

5 x 36GB SCSI

(all SCSI disk hot-plugable, but there is only space for 6 disks in the system)

1 x 80GB IDE



i thought 3x9gb + 3x36gb raid5 is ok, but I am not sure, because of the db copy volumes...

or 2x9gb + 4x36gb raid1...



does anyone has any suggestions for my problem?



thanks

thomas



ps: what do you think about upgrading to TSM 5.1

 

[witoon_r]

I have a short idea for configure RAID subsystem.

OS : Mirror (RAID 1)

DATA : RAID 5

DB & log : mirroring 2 copies