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Managing Disks - Certify, Verify, Initialize
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Topic starter
Hi!
I need help on some questions:
1) Whether process of certification is harmful to ssd disks?
2) I have 4 identical ssd 1 TB of a disk, which I plan to use in RAID-0.
Verify test to all disk passed is successfuly.
When I carried out Certify test for all disks. And on one disk the test showed 2 mistakes.
Some lines from log is lower.
Sep 16 00:32:38 - SoftRAID Application: Verifying the disk disk4, SN: 986080610040, SATA bus 0, id 6 (Thunderbolt). All the sectors on this disk will be read to ensure that they are reliable.
Sep 16 01:57:21 - SoftRAID Application: The verify disk command for disk disk4, SN: 986080610040, SATA bus 0, id 6 (Thunderbolt) completed successfully.
Sep 16 08:41:28 - SoftRAID Application: Certifying the disk disk4, SN: 986080610040, SATA bus 0, id 6 (Thunderbolt). with 3 passes and 15 minutes of random access testing. During each pass, every sector on the disk is filled with a pattern. Then the pattern is read back and verified.
Sep 16 10:10:04 - SoftRAID Application: The certify disk command for disk disk4, SN: 986080610040, SATA bus 0, id 6 (Thunderbolt) encountered a verify error (offset 9,948,889,088, i/o block size = 16,777,216). Error during pass number = 1. This disk should be replaced immediately.
Sep 16 17:45:56 - SoftRAID Application: The certify disk command for disk disk4, SN: 986080610040, SATA bus 0, id 6 (Thunderbolt) failed because this disk has unreliable sectors. It should be replaced immediately (error number = 66).
Additional info.
Smart info for this disk is: Reallocated Sectors - 1, Offline scan wrong - 4, Reallocation count - 8
These mistakes are critical? Can I use this ssd disk or is it necessary to replace it?
I thank for your help.
Posted : 17/09/2016 3:50 am
What kind of SSD are these? If SoftRAID saw them as SSD's, then there would not be a reallocation count. So SoftRAID must see them as SSD devices. Look at the disk tile, is it a SSD icon (circuit board), or a HDD icon (drive icon)?
Posted : 17/09/2016 6:19 am
Topic starter
It is as SSD icon (circuit board) on SoftRAID
Smart info about relocation count from another software.
Other three disks don't show mistakes by SoftRAID and no relocation count on another software.
Posted : 17/09/2016 1:33 pm
So I would ignore other software that tests for SMART. SSD's are completely unlike hard drives and SMART reallocation data is irrelevent.
The fact you had a certify failure means you have unreliable hardware. Whether it is the enclosure or drives, you should figure out. But you know in advance that there is a problem, a disk, or SSD should never fail a certify.
Repeat a 3 pass certify and see if you get another error.
Posted : 17/09/2016 3:13 pm
Topic starter
Second test was without mistakes!
It means that problems with unreliable hardware?
Whether is it possible to use this hardware, or it isn't really critical?
Thank you!
Posted : 18/09/2016 5:48 pm
We certify disks all the time without getting certify errors. They should be extremely uncommon.
Perhaps your SSD is indeed fine, but keep a close eye on it. In our opinion, disk errors should be extremely rare.
Good luck!
Posted : 18/09/2016 6:38 pm
