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Forum Discussion
[Duo v2] bad sectors because the two disks are different
Hello,
When I bought my ReadyNas Duo v2, only 1 hard-disk was included. A few weeks later, I decided to buy a second disk but the same disk was not available anymore.
I then chose an hard-disk with the closest specs (7200 RPM, 64MB, …).
Disk1: “no name” RueDuCommerce 3,5'' - 2000Go - 7200trs - SATA II - 64Mo
Disk2: The second is a Seagate 3,5'' 2000 GO Barracuda 7200.14 - 64MO - SATA 6 gb/s - ST2000DM001.
RAIDiator 5.3.5 (arm) is installed.
A few days after, I received some email notifications from the NAS telling that the number of sectors reallocated were increasing for the disk2.
Here is an example of message:
This is the forth message I received and they always arrive at 04:00.
Is it possible that these bad sectors are because the two disks are different?
When I ran the SeaTool (Seagate diagnostic tool), it reports that the disk passed all tests (the deep test that take hours). The disk already returned (for repair under waranty) once to the manufacturer (Seagate) but they returned me the same disk.
Any idea?
Philippe
When I bought my ReadyNas Duo v2, only 1 hard-disk was included. A few weeks later, I decided to buy a second disk but the same disk was not available anymore.
I then chose an hard-disk with the closest specs (7200 RPM, 64MB, …).
Disk1: “no name” RueDuCommerce 3,5'' - 2000Go - 7200trs - SATA II - 64Mo
Disk2: The second is a Seagate 3,5'' 2000 GO Barracuda 7200.14 - 64MO - SATA 6 gb/s - ST2000DM001.
RAIDiator 5.3.5 (arm) is installed.
A few days after, I received some email notifications from the NAS telling that the number of sectors reallocated were increasing for the disk2.
Here is an example of message:
New SMART disk errors detected! (RND2000)
Reallocated sector count has increased in the last day.
Disque 2:
Previous count: 1480
Current count: 1552
Growing SMART errors indicate a disk that may fail soon. If the errors continue to increase, you should be prepared to replace the disk.
This is the forth message I received and they always arrive at 04:00.
Is it possible that these bad sectors are because the two disks are different?
When I ran the SeaTool (Seagate diagnostic tool), it reports that the disk passed all tests (the deep test that take hours). The disk already returned (for repair under waranty) once to the manufacturer (Seagate) but they returned me the same disk.
Any idea?
Philippe
13 Replies
- No not possible to get SMART errors due to using different disks.
Disk is failing. Which disk was included with the NAS? - The "no name" was one included with the NAS.
- What firmware is on the seagate ST2000DM001
Edit: The latest firmware for that drive is CC4H http://knowledge.seagate.com/articles/e ... Q/223651en
If you check the HCL you will see Seagate Barracuda 7200.14 ST2000DM001 2TB 6Gb/s 64 MB Must be used with firmware CC4H or newer. - The disk is failing as that count is climbing rapidly. Disks can and do fail, and while early failure is upsetting, it does happen. Many of us with NAS units keep a spare disk or two on hand just for this situation. The second disk provides redundancy in case of failure of a disk. If you remove the disk and sent it back to Seagate for replacement, and the first disk fails, you will lose your data unless you have a backup.
If you do not have a backup, I would create one now. - Thank you all for your replies.
I have just upgraded the firmware of the disk. The old firmware was CC4C and it is now CC4F.
Let see if the SMART errors will continue to increase.
Do you think that these are real errors or just false errors related to the firmware? When I do deep scan (with Seatool), it finds no error. I coul then assume there is no real error ...
If something goes wrong, my most important folder is backed up with Crashplan.
Philippe
Once a sector is reallocated, you won't see any errors. However, it will slow down performance (due to excessive seeking) and lots of reallocated sectors is a strong indicator of total failure.filzip77 wrote: Thank you all for your replies.
I have just upgraded the firmware of the disk. The old firmware was CC4C and it is now CC4F.
Let see if the SMART errors will continue to increase.
Do you think that these are real errors or just false errors related to the firmware? When I do deep scan (with Seatool), it finds no error. I coul then assume there is no real error ...
If something goes wrong, my most important folder is backed up with Crashplan.
Philippe
If you have a tool that can read the SMART stats independently from the NAS, that would would be useful (Acronis Drive Monitor is a freeware tool that does that). The SMART stats are kept in the drive itself, so you should be able to get them from from any machine.
Also, if you re-insert the drive into the NAS pay close attention to any further increase. 1552 reallocated sectors is a huge number, normally Netgear suggests replacement at 50.filzip77 wrote:
When I ran the SeaTool (Seagate diagnostic tool), it reports that the disk passed all tests (the deep test that take hours). The disk already returned (for repair under waranty) once to the manufacturer (Seagate) but they returned me the same disk
I wonder how many reallocated sectors the diagnostic tool thinks is ok, because seatools does not tell you it just says disk passed the test.- filzip77 - part of the RMA process with Seagate is to run the long test under SeaTools. If the drive fails, it will return a code. That code indicates what the problem is to Seagate. If you send a disk back that has not failed the SeaTools test or shown other signs of failure (other than increasing reallocated sectors) they will return it to you. I have RMA'd several drives to Seagate over the past 5 years that have come out of a ReadyNAS, and all have been replaced by a refurbished drive within a week of them receiving it.
If you verify that there are that many reallocated sectors on the drive, I would work with Seagate technical support to get a replacement.
This statement is not correct. There are some manual codes on the Seagate site that you can enter - here is the current list: http://www.seagate.com/staticfiles/supp ... codes.htmlPapaBear wrote: ...If you send a disk back that has not failed the SeaTools test or shown other signs of failure (other than increasing reallocated sectors) they will return it to you...
Seagate does reserve "the right to return a good drive back to its owner and to charge for all associated shipping costs", but they have never done that to me, and I have used these manual codes.
The drive should have failed with 1500+ reallocated sectors, which is why I think it would be useful to confirm that the NAS in fact read the SMART stats correctly.filzip77 wrote: Thank you all for your replies.
I have just upgraded the firmware of the disk. The old firmware was CC4C and it is now CC4F.
Let see if the SMART errors will continue to increase.
Do you think that these are real errors or just false errors related to the firmware? When I do deep scan (with Seatool), it finds no error. I coul then assume there is no real error ...
If something goes wrong, my most important folder is backed up with Crashplan.
Philippe
Did you read my post above or is that just a typo CC4H is the latest firmware.
If you check the HCL you will see Seagate Barracuda 7200.14 ST2000DM001 2TB 6Gb/s 64 MB Must be used with firmware CC4H or newer.
New firmware version: CC4H
Please verify your drive model number, serial number, and firmware revision using the Drive Detect software.
This article applies to the following models:
Model Number Part Number Capacity
ST3000DM001 9YN166 3TB
ST2500DM001 9YN16L 2.5TB
ST2000DM001 9YN164 2TB
ST1000DM003 9YN162 1TB
Previous versions of firmware with these models and part numbers are CC46, CC47, CC49, CC4C, or CC4G.
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