Just trying to add a new drive to my array.  The drive is a 2TB EARS WD drive.  It's the 5th drive in my system that also includes a cache drive.  I've been banging my head against a wall all weekend trying to get this thing going.  I saw a mention of setting jumpers 7-8 on an EARS drive, and when I did that, it did seem to initialize longer, but it still crapped out.

 

When I initially tried to start the array with the new drive, nothing happened, and I found that jumpers 7&8 should be set on an EARS drive, so I did that.  It seemed to make it a bit further, but same result, it eventually craps out.

 

When I start the array, it goes for a while, and then eventually it says I can't access the server.  And when I look at the syslog, the most current area looks like this:

 

May 16 00:55:35 fileserver kernel: sd 2:0:0:0: [sdc] Result: hostbyte=0x04 driverbyte=0x00
May 16 00:55:35 fileserver kernel: end_request: I/O error, dev sdc, sector 351414967
May 16 00:55:35 fileserver kernel: sd 2:0:0:0: [sdc] Unhandled error code
May 16 00:55:35 fileserver kernel: sd 2:0:0:0: [sdc] Result: hostbyte=0x04 driverbyte=0x00
May 16 00:55:35 fileserver kernel: end_request: I/O error, dev sdc, sector 351414999
May 16 00:55:35 fileserver kernel: sd 2:0:0:0: [sdc] Unhandled error code
May 16 00:55:35 fileserver kernel: sd 2:0:0:0: [sdc] Result: hostbyte=0x04 driverbyte=0x00
May 16 00:55:35 fileserver kernel: end_request: I/O error, dev sdc, sector 351415025
May 16 00:55:35 fileserver kernel: sd 2:0:0:0: [sdc] Unhandled error code
May 16 00:55:35 fileserver kernel: sd 2:0:0:0: [sdc] Result: hostbyte=0x04 driverbyte=0x00
May 16 00:55:35 fileserver kernel: end_request: I/O error, dev sdc, sector 351415069
May 16 00:55:35 fileserver kernel: sd 2:0:0:0: [sdc] Unhandled error code
May 16 00:55:35 fileserver kernel: sd 2:0:0:0: [sdc] Result: hostbyte=0x04 driverbyte=0x00
May 16 00:55:35 fileserver kernel: end_request: I/O error, dev sdc, sector 351415106
May 16 00:55:35 fileserver kernel: sd 2:0:0:0: [sdc] Unhandled error code
May 16 00:55:35 fileserver kernel: sd 2:0:0:0: [sdc] Result: hostbyte=0x04 driverbyte=0x00
May 16 00:55:35 fileserver kernel: end_request: I/O error, dev sdc, sector 351415159
May 16 00:55:35 fileserver kernel: sd 2:0:0:0: [sdc] Unhandled error code
May 16 00:55:35 fileserver kernel: sd 2:0:0:0: [sdc] Result: hostbyte=0x04 driverbyte=0x00
May 16 00:55:35 fileserver kernel: end_request: I/O error, dev sdc, sector 351413015
May 16 00:55:35 fileserver kernel: sd 2:0:0:0: [sdc] Unhandled error code
May 16 00:55:35 fileserver kernel: sd 2:0:0:0: [sdc] Result: hostbyte=0x04 driverbyte=0x00
May 16 00:55:35 fileserver kernel: end_request: I/O error, dev sdc, sector 351413111
May 16 00:55:35 fileserver kernel: sd 2:0:0:0: [sdc] Unhandled error code
May 16 00:55:35 fileserver kernel: sd 2:0:0:0: [sdc] Result: hostbyte=0x04 driverbyte=0x00

 

I've added drives before and never had a problem.  This is really turning me off of unRAID.  Hopefully it's USER error.

Some of the EARS drives had buggy firmware and didn't work well with the jumper.

People who RMA-ed such drives reported that the replacement drives worked well.