How to determine disc spindown time
Solution 1
There does not seem to be a way to query that value with hdparm, however you can see if the drive is in a standby or active state...
> sudo hdparm -C /dev/sdb
/dev/sdb:
drive state is: standby
> sudo hdparm -C /dev/sda
/dev/sda:
drive state is: active/idle
Solution 2
The option -B 128
inhibits spindown, so your -S option is useless. Have a look at man hdparm
. Spindown is only possible with -B parameters of 127 and less.
Solution 3
If you have a Seagate disk which support Extended Power Controls (EPC), I assume mostly enterprise class, you can use the tool SeaChest
First get the Seagate disk handle:
SeaChest_PowerControl -v 0 --scan --scanFlags sgtosd
Result:
Vendor Handle Model Number Serial Number FwRev
ATA sg0<->sda ST1000LM049-2GH172 WN90H8BT SDM1
ATA sg1<->sdb ST1000LM049-2GH172 WN90HACK SDM1
ATA sg2<->sdc ST1000LM049-2GH172 WGS3M35X SDM1
ATA sg3<->sdd ST1000LM049-2GH172 WGS65M4X SDM1
ATA sg4<->sde ST1000NX0303 S470WNPT NN02
NVMe /dev/nvme0n1 Force MP510 184282050001276960F1 ECFM11.0
Then get the standby time:
SeaChest_PowerControl -v 0 -d /dev/sg4 --showEPCSettings
Result:
===EPC Settings===
* = timer is enabled
C column = Changeable
S column = Saveable
All times are in 100 milliseconds
Name Current Timer Default Timer Saved Timer Recovery Time C S
Idle A *200 *10 *200 150 Y Y
Idle B 1200 *2400 1200 650 Y Y
Idle C 1300 6000 1300 4000 Y Y
Standby Z *1200 36000 *1200 15000 Y Y
(Don't mind my experimental Idle_C and Standby_Z values which is very low)
You can get the tool from Seagate
The above example is from a Seagate Enterprise Capacity 2.5" 1TB SATA (ST1000NX0343). Tried the same on a Seagate BarraCuda Pro 2.5" 1TB SATA (ST1000LM049) and it didn't work, as it apparently doesn't support EPC.
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Comments
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lzap almost 2 years
I am able to set both APM and spindown times using the command:
hdparm -S 246 -B 128 /dev/sda
Unfortunately I can only find the APM value in the information output:
hdparm -I /dev/sda | grep Advanced
How can I see the spindown time value? I suspect my disc it is ignoring my value. I would like to see it. Tried smartctl but with no luck, help.
Update: It turned out tuned is very aggressive. When I turned it down, my discs does not spin down. It was setting something there.
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Benjamin Peter about 8 yearsYes. But additionally on my Samsung drive "-B 127" did a spin down before the with -S configured time of 15 minutes. This means you might want to set it even higher to allow the spin down time setting to work. I also found this information here askubuntu.com/a/733242/397064 which suggest a setting of "-B 150" which works for me too. The disc will then spin down after the specified time.
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比尔盖子 over 3 yearsThis answer is wrong. The Standby timer (
-S
) and APM (-B
) can coexist. Even if APM is 128, the Standby timer may still spin down the HDD. For more information, please read the actual technical standard, ATA/ATAPI Command Set - 2 (ACS-2), see page 19, "If both APM and the Standby timer are set, then the device shall go to the Standby state when the timer expires or the device’s APM algorithm indicates that the Standby state should be entered." -
比尔盖子 over 3 years@BenjaminPeter You're totally right.