I have a QNAP TS-879 for which I installed 4 Samsung 850 Pro 1TB SSD drives about 90 days ago. I am using VMWare 5.1 and had two rather small low utilization virtual machines that have been working flawlessly until this morning. The VMWare server reboot (which never happens) at about 5 something in the morning. When I went to start the VMs, I received a SMART error from the NAS (Media Error)
Drive4 Read I/O error, UNRECOVERED READ ERROR sense_key=0x3, asc=0x11, ascq=0x4, CDB=28 00 03 f8 c2 88 00 00 80 00 .
Then 3 hours later I received the same exact error for Drive3...
I viewed the SMART status of each and it showed a problem. The relocated sectors at one and gave me a warning for both drives. I then got another media failure and unrecovered read error.
I contacted both QNAP and Samsung. First, I transferred all the data off the SSDs to my conventional drives and then took out the SSDs and ran the samsung magic utility (forgot the name) to query the SMART status. Attached is what I got for the two drives causing the problems:
So, one reallocated sector count on each drive but they both failed the ECC Error Rate and Uncorrectable error count. The other two drives were fine. These were #3 and #4 in the RAID5 array.
QNAP said that they're 100% sure it's a drive problem...but it's odd that they happened within 3 hours of one another ... However I do have more disks in the QNAP that are not having any problems at all.
So, the array was blazing fast ... loved it, but am very concerned to try again, especially with SSDs.
Anyone care to share their opinion or shed any light? Thanks
Drive4 Read I/O error, UNRECOVERED READ ERROR sense_key=0x3, asc=0x11, ascq=0x4, CDB=28 00 03 f8 c2 88 00 00 80 00 .
Then 3 hours later I received the same exact error for Drive3...
I viewed the SMART status of each and it showed a problem. The relocated sectors at one and gave me a warning for both drives. I then got another media failure and unrecovered read error.
I contacted both QNAP and Samsung. First, I transferred all the data off the SSDs to my conventional drives and then took out the SSDs and ran the samsung magic utility (forgot the name) to query the SMART status. Attached is what I got for the two drives causing the problems:
So, one reallocated sector count on each drive but they both failed the ECC Error Rate and Uncorrectable error count. The other two drives were fine. These were #3 and #4 in the RAID5 array.
QNAP said that they're 100% sure it's a drive problem...but it's odd that they happened within 3 hours of one another ... However I do have more disks in the QNAP that are not having any problems at all.
So, the array was blazing fast ... loved it, but am very concerned to try again, especially with SSDs.
Anyone care to share their opinion or shed any light? Thanks