In my HP DL380 server I have RAID5 with hotspare 3+1 - recently one of working disk crashed - i rebooted the server and activated hot spare. RAID synchronized after few hours, and everything seemed to be working, but there are some performance problems.
Perfmon shows graphs like .|.|.|.|.| ( 0 to 100%) on disk queue when MSSQL is "waiking up" for example when someone launches app for the first time or when using Sharepoint. After 5-15 minutes it stops peaking and stays at normal low level, but those peaks keep appearing several times during day.
The second problem is that after this crash HP Backup Software ( Backup Express ) is showing errors and it cannot backup files on drive C: .
Today even DHCP service had some problems.
Is it safe to run chkdsk on running server and then maybe sfc /scannow ?
Or maybe someone knows what happened?
Logs show nothing