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.