On Jun 13, 2006, at 11:42 AM, Michael Reed wrote:
Treating fibre channel like removable storage is wrong. Fibre
targets aren't
generally supposed to go away. If they do, there's a significant
chance
that they'll be repaired and returned to service. It makes sense
to keep
the infrastructure in place just like scsi, sas, iscsi, ata.
In both Fibre Channel SANs and iSCSI SANs, administrators in large
datacenters will re-zone devices with some regularity as they
redeploy applications among existing systems.
The kind of disruption the current code can cause to systems with
multi-terabytes
or petabytes of storage will be considered unacceptable in a
production environment.
Agreed; but Fibre Channel and SAN devices _will_ come and go
dynamically.
So, I also wish to encourage a reconsideration of the position that
dead targets
should be removed. Removing removable storage targets like
firewire and usb
makes sense. I just don't believe that the same applies to fibre
channel
or other generally non-removable targets.
Think of removing a Fibre Channel or iSCSI device as "removing access
authorization". You're correct that these devices are not often
physically removed from the SAN, but access authorization may change
frequently.
Regards,
-Steve
--
Steve Byan <smb@xxxxxxxxxxx>
Software Architect
Egenera, Inc.
165 Forest Street
Marlboro, MA 01752
(508) 858-3125
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