The FWSCSI (UltraSCSI fast/wide differential SCSI) has a throughput of 20
MB/second.  The SE-SCSI is only 5MB//second, IIRC.  Also, you can have up to
15 devices on the FWSCSI, just not much throughput.  :-)

It is advisable not to have more than 4-5 devices on one FW-SCSI.  What kind
of drives are in the Nike?  What kind of external drives did you have
before?

A larger server might well be the proper way out.

Denys
-----Original Message-----
From: HP-3000 Systems Discussion [mailto:[log in to unmask]] On Behalf
Of Doherty, Thomas (Retirement)
Sent: Monday, March 14, 2005 9:24 AM
To: [log in to unmask]
Subject: [HP3000-L] NIKE Mod 20 Woes...

I'm currently running a 918RX, 512Mb Memory.  We recently went from (3) 9G
external drives (LDEV one running at 4 G of course) to a Nike Array.

Unfortunately, due to a 100mb NIC card taking up one half of a slot, we
couldn't't run a second FW SCSI card so we're running 8 LDEVS on the single
FW SCSI card, and the performance has taken a hit.

It's my understanding that the limit on a FW SCSI card is 4 drives, so I
guess I could reconfigure the Nike for 4 LDEVS, converting the rest to 'hot
spares.'  For a temporary fix.

Looks like we need a larger server.  Any recommendations?

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