Subject: multi fibre channel path abstraction
To: NetBSD Users <netbsd-users@NetBSD.org>
From: Louis Guillaume <lguillaume@berklee.edu>
List: netbsd-users
Date: 05/18/2005 18:16:14
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Hi,
Is there any software out there for NetBSD that will allow for multiple
redundant paths to the same LUNs on multiple Fibre-Channel bus?
This would be similar to EMC's PowerPath software. Basically, what I'm
looking for is this...
[LUN] on EMC Clariion CX500 SAN
| |
| +--[FC Switch 1]--------+
+----[FC Switch 2]------+ |
| |
[scsibus0 at mpt0]-------+ |
| [scsibus1 at mpt1]-----+
| |
| |
sd0 sd1
\ /
\ /
v
|
ld0 - logical abstraction of sd0 and sd1. Redundant
paths to the LUN on the SAN provide high
availability.
... It's actually typical to see 4 devices pointing at the same LUN in
our configuration. Each FC Card has a path to each switch. Each switch
has a path to each Storage Array Controller on the SAN. It's just easier
to draw with 2.
Any help would be great.
Louis
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