Hello,
I have a client with a PE T300 that is suffering from data corruption on a 1TB RAID1 array (used as the data partition) on an SAS6 controller. The server also has a 250GB RAID1 array which is the main OS partition so all four slots on the controller are full.
I'm not sure why the corruption has occurred, but I have just had to replace the power supply as the fan noise was excessive so possibly the server has experienced power issues. The system is suffering from user profile issues - some users cannot retrieve their profiles when logging in, there are also 'file corrupt' messages when accessing some of the user data files.
Event Viewer is reporting 'The file system structure on the disk is corrupt and unusable. Please run the chkdsk utility on the volume DATAPART1'. I have tried running chkdsk /f but whilst checking index entries (stage 2 of 3) it quits with 'an unspecified error has occurred' (no error number). Each time I run chkdsk, the repair results are slightly different and it quits in different places. I have run chkdsk certainly more than ten times.
I thought of doing a consistency check on the RAID, but after checking OMSA and much internet searching, it would appear a consistency check is not an option with this controller. The controller reports both physical drives have no failure predicted. The controller firmware is not fully up to date, current version is 00.25.47.00.06.22.03.00, drivers are 1.28.03.01. Would updating increase my options / help chkdsk complete and should I do it while the drive is in this condition?
Please help, where do I go from here? Is it a case of format the drive and restore from backup? Windows Backup is used. I am slightly scared of this as the volume contains the Exchange Store and I've never done a restore of Exchange before.
This has so far ruined my weekend :). Would really appreciate your advice if there is anything I can try.