Once that was complete, he booted the system back up and I tested the "bad disk" for bad sectors. the RAID card or connectors are damaged / not plugged in properly and/orĪfter discussing the options with Harlen, I suggested he backup his RAID to an external hard drive, then shut down the system and disconnect the bad disk, then re-attach it to the motherboard so that I couldĭo a surface scan of the drive for bad sectors.the RAID controller had a "hiccup" (likely due to a hard drive timeout) and removed the drive from the array.the hard drive has an internal mechanical failure.the hard drive has a logic error on the hard drive PCB board.In other words, this is a very serious problem! What Causes a Disk to "Fail" and be Removed from the RAID Array?īased on my experience, if a disk is marked as "failed" (and subsequently removed from the RAID), it is because of So if you haveģ disks, 2 disks can operate without redundancy if another disk fails, it meansĭata loss. That meant his RAID was functional but without redundancy since one disk was marked as "failed".įor a RAID 5, redundancy is described as N-1 disks. Since Harlen is using only 3 disks in a RAID 5, That makes almost 10 consecutive months where Physical Disk #1 on controller 0 was marked as failed. My remote desktop service, and he agreed.Īfter reviewing Harlen's Alert log I discovered that the "Device failed: Physical Disk 0:1 Controller 0, Connector 0" error message appeared repeatedly for months - dating back as far as January this year. I asked Harlen if he would like me to connect to his Windows Server using If it passes, I want to put it back into the RAID. I would like to hire you to help me fix this problem, including According to the Dell OpenManage Server Administrator (which we use to manage the RAID via the browser), the 'Alert' log file is reporting ' Device failed: Physical Disk 0:1 Controller 0, Connector 0'. We have 3 x 250 GB hard drives in RAID 5 format attached to the Perc 300 RAID card. I own a Dell PowerEdge T110 server, which runs Windows Server 2008 R2 Foundation and is equipped with aĭell Perc 300 RAID card.
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