Hello to Everybody !
I’m new to this community but I need the help from the Guru or the WD technicians.
I have bought few months ago one NAS QNAP 653A with 4 HD RED NAS of 4TB configured as one RAID5 volume.
The model of HD are: WD40EFRX-68WT0N0 firmware ver, 82.00A82
The NAS has been upgraded in the time to the latest firmware: 4.2.4 of 13/03/2017
I recently having problems with the NAS: it seems that the disk 1 and 2 of my RAID5 are having problems and the NAS SW said are Abnormal and put RAID5 in degraded mode /read only mode.
It happen now 3 times…the firs 2 with 2 HD and the last one with only HD2.
I have made some test and after the test the conditions of the HD are good so I don’t understand where is the problem I’m having .
If fact the TEST is Ok and also the SCAN operation made from the QNAP console seem OK.
Now I’m rebuilding the array to recove from read only mode, since all the 4 HD are green and in “good” status (at least this is what the STORAGE - DISK/VKBOD menu says.
Look at the log of the NAS:
[Pool 1] RAID Group 1 is in degraded and read-only mode.
[Bad Stripe Log]: Host Drive 1 sector(78291264, 8, 1) error found.
[Bad Block Log]: Host Drive 1 sector(78291264, 8, 1) error found.
[Volume DataVol1, Pool 1] Host: Disk 2 failed.
[Bad Block Log]: Host Drive 2 sector(78291264, 8, 1) error found.
A drive has been detected but is inaccessible. Please check it for faults.
A drive has been detected but is inaccessible. Please check it for faults.
Host: Disk 2 Read I/O error, sense_key=0x0, asc=0x0, ascq=0x0, CDB=88 00 00 00 00 00 00 08 00 40 00 00 00 08 00 00 .
Host: Disk 2 unplugged.
Hot-remove Host: Disk 2 failed.
Host: Disk 1 unplugged.
Hot-remove Host: Disk 1 failed.
Host: Disk 2 Read I/O error, sense_key=0x0, asc=0x0, ascq=0x0, CDB=88 00 00 00 00 00 00 09 80 b0 00 00 00 08 00 00 .
[…]
Host: Disk 2 pd error cleared.
[Host: Disk 2] Bad Blocks Scan completed.
Host: Disk 1 pd error cleared.
[Host: Disk 1] Bad Blocks Scan completed.
[Antivirus] Virus definitions updated.
[Host: Disk 1] Started scanning bad blocks.
[Host: Disk 2] Started scanning bad blocks.
[…]
A drive has been detected but is inaccessible. Please check it for faults.
[Volume DataVol1, Pool 1] Host: Disk 1 failed.
[Volume DataVol1, Pool 1] Host: Disk 2 failed.
A drive has been detected but is inaccessible. Please check it for faults.
Host: Disk 1 Read I/O error, sense_key=0x0, asc=0x0, ascq=0x0, CDB=88 00 00 00 00 00 00 08 00 40 00 00 00 08 00 00 .
As you can see if I do a complete scan of the HD then the error condition can be cleared and the RAID5 can be recovered…after one day however I have again problem , now only with disk 2.
Probably I need to replace these 2 hds but it is the first time I hade 2 drive fault of WD RED NAS HD at the same time ! I jyst want to be sure that I need to replace them…they should be under warranty but the NAS will probably loose all the data if I will do something wrong during the replacement operation.
Can you help me and confir the need to replace them ?
Thanks,
Skyeagle