Our fibre-channel SAN (IBM DS4700) is not working on channel B, despite the diagnostics showing OK. The VMware servers can't see anything on the B path - they are showing it as dead.
This may be the cause of some of the server corruption we've had lately - presumably the B channel has been going up and down and has now finally given up the ghost.
All servers are now running happily on A on that SAN and a call to IBM will be logged when we restart after Christmas.
Sunday, 20 December 2009
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