Forum Discussion

Aspirant

Jan 03, 2017

Smart error on disc WD2002FAEX - like to change to bigger discs

Hi One of my 2gb disc's Western Digital WD2002FAEX gives me a SMART error: "Detected increasing uncorrectable errors[172] on disk 3 [WDC WD2002FAEX-007BA0, WD-WMAY00807383]. This often in...

Hard Disk

StephenB

Guru - Experienced User

Jan 13, 2017

torstein_osborg wrote:

I have 2 of 5 old disks reporting SMART error.

Should i start to change the disks with errors first, or should i start from top and change one by one (1+2+3+4+5 from top and down)?

It always risky when two disks have errors. If you can make a backup first you should.

You want to replace the disk in the worst shape first. If you aren't sure which one that is, perhaps post the SMART errors you are seeing on the two drives.

After that replace the other disk with errors.

torstein_osborg

Aspirant

Jan 13, 2017

thanks for answer StephenB!

I start with to hot swap no 3 if nobody obejects.

Newest SMART/Error messages on top:

13. jan 17 (today friday 13.......)

Detected increasing pending sector count[123] on disk 3 [WDC WD2002FAEX-007BA0, WD-WMAY00807383] 15 times in the past 30 days. This often indicates an impending failure. Please be prepared to replace this disk to maintain data redundancy.

Today:

SMART Information for Disk 3

Model: WDC WD2002FAEX-007BA0
Serial: WD-WMAY00807383
Firmware: 05.01D05
SMART Attribute
Raw Read Error Rate 2
Spin Up Time 6241
Start Stop Count 1287
Reallocated Sector Count 0
Seek Error Rate 0
Power On Hours 47013
Spin Retry Count 0
Calibration Retry Count 0
Power Cycle Count 150
Power-Off Retract Count 65
Load Cycle Count 1221
Temperature Celsius 40
Reallocated Event Count 0
Current Pending Sector 111
Offline Uncorrectable 172
UDMA CRC Error Count 0
Multi Zone Error Rate 185
ATA Error Count 0

7. jan 17

Detected increasing pending sector count[265] on disk 2 [WDC WD2002FAEX-007BA0, WD-WMAY00875116] 15 times in the past 30 days. This often indicates an impending failure. Please be prepared to replace this disk to maintain data redundancy.

Today:

SMART Information for Disk 2
Model: WDC WD2002FAEX-007BA0
Serial: WD-WMAY00875116
Firmware: 05.01D05
SMART Attribute
Raw Read Error Rate 20
Spin Up Time 6466
Start Stop Count 1294
Reallocated Sector Count 0
Seek Error Rate 0
Power On Hours 46993
Spin Retry Count 0
Calibration Retry Count 0
Power Cycle Count 150
Power-Off Retract Count 65
Load Cycle Count 1228
Temperature Celsius 42
Reallocated Event Count 0
Current Pending Sector 39
Offline Uncorrectable 2
UDMA CRC Error Count 0
Multi Zone Error Rate 21
ATA Error Count 0

1. jan 17

Detected increasing uncorrectable errors[172] on disk 3 [WDC WD2002FAEX-007BA0, WD-WMAY00807383]. This often indicates an impending failure. Please be prepared to replace this disk to maintain data redundancy.

Hostname:	Mamma

Model:	ReadyNAS Ultra 6 Plus [X-RAID2]
Serial:	2Hxxxxxx
Firmware:	RAIDiator 4.2.30
Memory:	1024 MB [6-6-6-18 DDR2]

IPv4 address: 1:	192.168.0.4
IPv4 address: 2:	Not Connected

Volume C:	Online, X-RAID2, 5 disks, 84% of 7399 GB used

FramerV
NETGEAR Employee Retired
Jan 15, 2017
Hi torstein_osborg,

I would suggest that you do a back-up first before attempting to sync it. Given that you have a 2nd drive that might fail also.

Regards,
- StephenB
  Guru - Experienced User
  Jan 15, 2017
  FramerV wrote:
  I would suggest that you do a back-up first before attempting to sync it. Given that you have a 2nd drive that might fail also.
  
  Yes, I suggested that above also.
  
  Disk 3 does appear to be in worse shape
  - Sandshark
    Sensei
    Jan 15, 2017
    I wanted to add the "why" there is such a risk with two drives in bad shape. Resync is very intensive on all the drives, so a drive that is on the edge of failure is at high risk to be pushed over that edge. While a new drive is in re-sync, your array is no longer redundant. If you lose another during the process, you lose the entire volume.
    
    Backup is much less intensive, and even if you lose one drive during it, you have not lost the volume. And if you do lose one, that will let you lknow for sure which to replace first.
    
    Also, a word of warning: Be absolutely certain you are pulling the right drive. If you pull the wrong one, it will need to re-sync when you put it back in, placing a heavy load on both of your borderline drives.