One of my customers have a weird problem (and rather annoying).
The setup is as following.
2 * IBM X3550
Xen 5.5 (latest update)
1 * IBM DS3400 ISCSI (lastest f/w and microcode on controller and disks)
1 * IBM EXP3200 (lastest f/w on disks)
Under this setup there is only one VM, a Win2003 x86 with all winupdates installed.
Running IBM Fastback 6.1.1. as DR HUB.
Mounted to this OS is 6 * 2048GB partitions.
This setup has ran fine since feb -10, but under the summer vacation all 2TB partitions has gone missing or failed, OS is still intact tho, which is weird since all files are on the same SAN.
The SAN doesnt report any problem, nor Win2003 logs, more than a NTFS error occured on /lunxx/(SAN disks).
Ive logged a case to IBM and they have a 2nd line tech on it, but cant find any errors.
Do anyone of you pro's have any idea where i could start look, since there aint a option to acctually delete the SAN partitions and recreate them. The customers wont allow it.
IMO there must be a "flaw" or bug somewhere, and i really hope i could reconnect the disks again w/o deleting everything, shrugs.