We have 20 9840's, not LTO's, but I wouldn't expect the topology preferences
to be much different. We go 9840 -> SAN cloud (FC switches) -> 4 HBAs in
TSM server. If you have existing SAN infrastructure, I don't know that I'd
recommend putting a switch in your library. Personally I'd just run Fibre
from the drives to your existing switches. Whether you use hubs or not to
aggregate your drives per switch port seems to be a purely cost and
infrastructure (like Becky) and support driven decision. I haven't run into
drawbacks with FC hubs and small loops for port aggregation, but from my
standpoint, if I can afford 1 or 2 switch ports per drive, I'd rather go
with Simpler than install hubs. Of course, your mileage may vary.
Alex Paschal
Freightliner, LLC
(503) 745-6850 phone/vmail
-----Original Message-----
From: Tom Kauffman [mailto:KauffmanT AT NIBCO DOT COM]
Sent: Wednesday, September 10, 2003 11:39 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: How have you got your fiber-attached LTO drives connected to
your TSM server?
I will be going fiber-attach next year and will have two adapters in my TSM
server.
Do I put a fiber switch in the tape library (3584), tie all the drives to
it, and run two fibers back to the TSM server?
Do I run seperate fibers for all the drives back to my existing switches?
Do I put a pair of fiber hubs in somewhere, and hook half the drives to each
hub?
Ah, yes, it's that wonderful time of year when the leaves start to turn --
and the next year's budget projections are due :-)
Tom Kauffman
NIBCO, Inc
CONFIDENTIALITY NOTICE: This e-mail and any attachments are for the
exclusive and confidential use of the intended recipient. If you are not
the intended recipient, please do not read, distribute or take action in
reliance upon this message. If you have received this in error, please
notify us immediately by return e-mail and promptly delete this message and
its attachments from your computer system. We do not waive attorney-client
or work product privilege by the transmission of this message.
|
