June 5, 201313 yr Hello everyone, I need some help. Using RC8a. Unfortunately no syslog since I rebooted. My issues is that the web gui is showing that Disk 5 is missing but I can still get to it from Windows Explorer which means the disk is mounted. I can also see all of the contents from telnet at /mnt/disk5. Can someone help me as to why the gui shows it as missing and how can I fix it?
June 5, 201313 yr If a disk is missing the missing disk can be emulated based on parity. Check the cables to that disk and make sure they are secure. Otherwise that disk probably is dead and you'll have to replace it. If the disk is dead I'd suggest shutting the server off until you have a new drive precleared and ready to be added to the array. If another disks dies while one is already missing you will have permanent data loss. EDIT: If the missing disk is another Hitachi HDS722020ALA330 I bet it's dead as they are old drives. I have one those in my server I bought in 2009 and I'm surprised it's still going.
June 5, 201313 yr Shut the server down, check the cables (power and data cable on both ends) and report back and let us know what happened.
June 5, 201313 yr My issues is that the web gui is showing that Disk 5 is missing but I can still get to it from Windows Explorer which means the disk is mounted. NO -- it does NOT mean the disk is mounted at all. The whole idea of a fault-tolerant system is that when a disk fails, it can be emulated by reading all of the other disks plus parity and reconstructing the data. This will be VERY clear if you do this: (a) spin down all drives; then look at the Web GUI to confirm they're spun down; (b) Now access disk #5 via Windows Explorer and copy something from it (a small file is fine); © Now look at the Web GUI and you'll see that ALL disks were spun up ... that's because disk 5 was never actually read The "fix" is to shut down; replace the disk; then boot back up and Start the array ... it will rebuild disk #5 onto the new disk.
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