Guys we have installed an Ultra320 HBA into an E220R in slot1 (66mhz) 
and attached dual scsi to an SL24 with 2 half heigh LTO3 drives. 1 
Channel per tape drive.  Single Master/Media combo

This is all on Solaris 9 with Netbackup 5.0mp7.

I wont go into the details but suffice to say the customer won't spend 
any money on backups but of course needs them to work. We only got the 
new SL24 due to the previous L1000 falling over constantly and not being 
able to get support on it easily.

Anyway...

I have installed all this, but am getting quite poor speeds on backups.

doing a ufsdump or tar from base os doesnt get much speed and using 
netbackup gets higher speeds due to :-

/usr/openv/netbackup/db/config/NUMBER_DATA_BUFFERS = 16
/usr/openv/netbackup/db/config/SIZE_DATA_BUFFERS = 262144

We have also added the tuning parameters into /etc/system for shared 
memory etc.

I havn't messed with the st.conf and just let the drive do what it wants 
but was after any tips if that is the next area to focus on.

Currently getting about 8 - 25mb/s on backups depending on amount of 
jobs running.

e.g just doing a local backup of master server direct to the drive gets 
average :-

root@host-SL24# grep Kbytes/sec log.031609
15:26:35.390 [16237] <4> write_backup_completion_stats: successfully 
wrote 1 of 1 multiplexed backups, total Kbytes 6175485 at 10395.319 
Kbytes/sec
root@host-SL24#

I need to check the HBA is running at 320. I can't see any messages from 
dmesg or /var/adm/messages saying its been downgraded to ultra160 but it 
may be hidden elsewhere?

Cheers
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