power management - Why does drive not enter standby mode when using hdparm -S - Unix & Linux Stack Exchange
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When reading the hdparm manual pages, it says that the -S value
is used by the drive to determine how long to wait (with no disk
activity) before
spindle motor to save power
When configuring my drives with hdparm -B 1 -K 1 -S 120 /dev/sd[d-z] the output is:
setting drive keep features to 1 (on)
setting Advanced Power Management level to 0x01 (1)
setting standby to 120 (10 minutes)
And initial drive state hdparm -C /dev/sd[d-z] is "active/idle".
All these /dev/sd[d-z] drives are off the same make and model, not partitioned, not formatted and not mounted.
After waiting for 15 minutes, the drive state is still "active/idle".
Only when issuing a "Force
drive to immediately enter the low power consumption standby mode" using hdparm -y /dev/sd[d-z] the drive go to a "standby" state.
Why do my drives not enter the low power consumption standby state after the hdparm specified timeout value?
Some more drive specs derived from hdparm -I /dev/sdd
ATA device, with non-removable media
Model Number:
Hitachi HDS5C3020BLE630
Firmware Revision:
Transport:
Serial, ATA8-AST, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6, SATA Rev 3.0; Revision: ATA8-AST T13 Project D1697 Revision 0b
Standards:
Used: unknown (minor revision code 0x0029)
Supported: 8 7 6 5
Likely used: 8
Configuration:
max current
sectors/track
CHS current addressable sectors:
user addressable sectors:
user addressable sectors:
Sector size:
Physical Sector size:
4096 bytes
Logical Sector-0 offset:
device size with M = :
1907729 MBytes
device size with M = :
2000398 MBytes (2000 GB)
cache/buffer size
= 22756 KBytes (type=DualPortCache)
Form Factor: 3.5 inch
Nominal Media Rotation Rate: 5700
Capabilities:
LBA, IORDY(can be disabled)
Queue depth: 32
Standby timer values: spec'd by Standard, no device specific minimum
R/W multiple sector transfer: Max = 16
Current = 16
Advanced power management level: 1
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns
IORDY flow control=120ns
Commands/features:
Enabled Supported:
SMART feature set
Security Mode feature set
Power Management feature set
Write cache
Look-ahead
Host Protected Area feature set
WRITE_BUFFER command
READ_BUFFER command
DOWNLOAD_MICROCODE
Advanced Power Management feature set
Power-Up In Standby feature set
SET_FEATURES required to spinup after power up
SET_MAX security extension
48-bit Address feature set
Device Configuration Overlay feature set
Mandatory FLUSH_CACHE
FLUSH_CACHE_EXT
SMART error logging
SMART self-test
Media Card Pass-Through
General Purpose Logging feature set
WRITE_{DMA|MULTIPLE}_FUA_EXT
64-bit World wide name
URG for READ_STREAM[_DMA]_EXT
URG for WRITE_STREAM[_DMA]_EXT
WRITE_UNCORRECTABLE_EXT command
{READ,WRITE}_DMA_EXT_GPL commands
Segmented DOWNLOAD_MICROCODE
unknown 119[7]
Gen1 signaling speed (1.5Gb/s)
Gen2 signaling speed (3.0Gb/s)
Gen3 signaling speed (6.0Gb/s)
Native Command Queueing (NCQ)
Host-initiated interface power management
Phy event counters
NCQ priority information
Non-Zero buffer offsets in DMA Setup FIS
DMA Setup Auto-Activate optimization
Device-initiated interface power management
In-order data delivery
Software settings preservation
SMART Command Transport (SCT) feature set
SCT Write Same (AC2)
SCT Error Recovery Control (AC3)
SCT Features Control (AC4)
SCT Data Tables (AC5)
Master password revision code = 65534
not enabled
not locked
not expired: security count
not supported: enhanced erase
416min for SECURITY ERASE UNIT.
Logical Unit WWN Device Identifier: 5000cca37dc106a3
: 37dc106a3
Checksum: correct
1,59242544
After disabling SMART scrubbing (automatic offline testing), with smartctl --offlineauto=off /dev/sdx the drive is now entering "standby".
Note: offlineauto=off value is saved in the drive, surviving reboots and power outages.
1,59242544
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