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Managing Disks - Certify, Verify, Initialize
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Can you post estimated or average Certify times (as well as Verify and Initialize) for different types of hard drive?
(Maybe add to the manual or top of the forum)
I have an OWC ThunderBay 4 RAID 5 Edition with 4x 8TB Toshiba MG05A drives.
If I stop the certifying process, does it damage the drives? If I need to use them?
And, can I formate a raid, use for a short time, and start the certify process again?
Thank you,
Ronen
Posted : 20/06/2020 2:59 pm
A quick way to do this is a 3 pass certify is a write, then a read pass. so 6X the drive capacity.
a 1TB drive means 6TB of data is read/written.
The unknown is what can the drive sustain on reads and writes.
at 150MB/s, a 1TB drive can be certified in 1/2 a day.
The problem is disks change behavior dramatically during the certify process. Many modern drives use cheaper "SMR" recording, which causes write performance to drop by 1/2 to 2/3 during the write process. SoftRAID just measures the current speed vs amount remaining to estimate a time, which is why it varies a lot during a certify.
What you see are the hours remaining, guessing at 74. But it will take longer, depending on the disks. I do not know if those Toshiba's have SMR or not.
Here is a table of SMR drives I found on the web:
(formatting does not carry over, but you should be able to figure it out)
List of SMR drives known to the community: Updated April 19, 2020
Manufacturer - Width Model No Model Name Type
WD - 3.5" WD20EFAX 2TB WD Red DM-SMR
WD - 3.5" WD30EFAX 3TB WD Red DM-SMR
WD - 3.5" WD40EFAX 4TB WD Red DM-SMR
WD - 3.5" WD60EFAX 6TB WD Red DM-SMR
WD - 3.5" WD20EZAZ 2TB Blue DM-SMR
WD - 3.5" WD30EZAZ 3TB Blue DM-SMR
WD - 3.5" WD40EZAZ 4TB Blue DM-SMR
WD - 3.5" WD60EZAZ 6TB Blue DM-SMR
WD - 3.5" WD40EMAZ 4TB Elements DM-SMR
WD - 3.5" WD60EMAZ 6TB Elements DM-SMR
WD - 3.5" WD60EDAZ 6TB My Book DM-SMR
Seagate - 3.5" ST2000DM005 2TB Barracuda DM-SMR
Seagate - 3.5" ST2000DM008 2TB Barracuda DM-SMR
Seagate - 3.5" ST3000DM007 3TB Barracuda DM-SMR
Seagate - 3.5" ST4000DM004 4TB Barracuda DM-SMR
Seagate - 3.5" ST5000DM003 5TB Barracuda DM-SMR
Seagate - 3.5" ST6000DM003 6TB Barracuda DM-SMR
Seagate - 3.5" ST8000DM004 8TB Barracuda DM-SMR
Seagate - 3.5" ST5000DM000 5TB Desktop DM-SMR
Seagate - 3.5" ST5000AS0011 5TB Archive DM-SMR
Seagate - 3.5" ST6000AS0002 6TB Archive v2 DM-SMR
Seagate - 3.5" ST8000AS0002 8TB Archive v2 HA-SMR
Seagate - 3.5" ST8000AS0003 8TB Exos (Archive v3) DM-SMR
Toshiba - 3.5" HDWD240UZSVA 4TB P300 Desktop DM-SMR
Toshiba - 3.5" HDWD260UZSVA 6TB P300 Desktop DM-SMR
Toshiba - 3.5" DT02ABA400 4TB DT02(-V) DM-SMR
Toshiba - 3.5" DT02ABA600 6TB DT02(-V) DM-SMR
HGST - 3.5" DC HC600 Series 14TB, 15TB and 20TB Ultrastar HM-SMR
Toshiba - 2.5" HDWL110 1TB L200 Slim DM-SMR
Toshiba - 2.5" HDWL120 2TB L200 DM-SMR
Toshiba - 2.5" MQ04ABF100 1TB MQ04 DM-SMR
Toshiba - 2.5" MQ04ABD200 2TB MQ04 DM-SMR
WD - 2.5" WD9000LPZX 900GB Blue DM-SMR
WD - 2.5" WD10SPZX 1TB Blue DM-SMR
WD - 2.5" WD10SPWX 1TB Blue DM-SMR
WD - 2.5" WD10SPSX 1TB Black DM-SMR
WD - 2.5" WD20SPZX 2TB Blue DM-SMR
WD - 2.5" Various Not For Resale DM-SMR
Seagate - 2.5" ST1000LM048 1TB Barracuda DM-SMR
Seagate - 2.5" ST2000LM015 2TB Barracuda DM-SMR
Seagate - 2.5" ST3000LM024 3TB Barracuda DM-SMR
Seagate - 2.5" ST4000LM024 4TB Barracuda DM-SMR
Seagate - 2.5" ST5000LM000 5TB Barracuda DM-SMR
Posted : 21/06/2020 1:01 am
