Thanks Jeff,
<1. You can have 2 fiber connections per tape drive. Each with a
<separate device. The first cfgmgr will show one path and the second
will
<show the second path.
I already know I will see 2 rmtX definitions from AIX - 1 down each FC
path.
<2. I believe AIX can do this with multiple device path, but I am
not
<sure of specifics.
What I am looking for is specifics.
<What advantage do you hope to gain from multi-pathing?
What I am hoping to gain is redundancy. If an adapter, a switch, a port
on the tape drive, or a link between a device goes down, I want to be
able to access all my tape drives from the 2nd redundant connection.
--
Joshua S. Bassi
Independent IT Consultant
IBM Certified - AIX/HACMP, SAN, Shark
Tivoli Certified Consultant- ADSM/TSM
Cell (408)&(831) 332-4006
[EMAIL PROTECTED]
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]] On Behalf Of
Jeff Bach
Sent: Tuesday, September 25, 2001 3:33 PM
To: [EMAIL PROTECTED]
Subject: Re: FC Tape Drive Multi-Pathing?
Josh,
1. You can have 2 fiber connections per tape drive. Each with a
separate device. The first cfgmgr will show one path and the second
will
show the second path.
2. I believe AIX can do this with multiple device path, but I am
not
sure of specifics.
3. I would make sure to use many tape drives and watch the switch
with
"portperfshow" to detect any bottom necks created with 36 tape drive on
a
SAN. Also to tell exactly the SAN device you are talking to "lscfg -vl
rmt1"
What advantage do you hope to gain from multi-pathing?
Jeff Bach
Home Office Open Systems Engineering
Wal-Mart Stores, Inc.
WAL-MART CONFIDENTIAL
-----Original Message-----
From: Joshua S. Bassi [SMTP:[EMAIL PROTECTED]]
Sent: Tuesday, September 25, 2001 1:24 PM
To: [EMAIL PROTECTED]
Subject: FC Tape Drive Multi-Pathing?
All,
Does anybody know if there is any way to setup tape drives
(Magstar
in
particular) for dynamic multi-pathing? I have a customer who is
deploying 35 Magstar FC based drives in a SAN environment behind
2
Brocade 6400 switches. There will be 6 RS6K 4.3.3 TSM servers
sharing
the drives using tape library sharing. Each host will have at
least
2
FC cards for tape and 2 for the disk environment. Multi-pathing
the
disk subsystem is easy, but I have never heard of a way to set
it up
for
tape drives.
--
Joshua S. Bassi
Independent IT Consultant
IBM Certified - AIX/HACMP, SAN, Shark
Tivoli Certified Consultant- ADSM/TSM
Cell (408)&(831) 332-4006
[EMAIL PROTECTED]
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