hdparm매뉴얼 페이지를 읽을 때 -S값이
드라이브에서 전력을 절약하기 위해 스핀들 모터를 끄기 전에 (디스크 활동없이) 대기 시간을 결정하는 데 사용됩니다
hdparm -B 1 -K 1 -S 120 /dev/sd[d-z]출력으로 드라이브를 구성 할 때 다음과 같습니다.
setting drive keep features to 1 (on) setting Advanced Power Management level to 0x01 (1) setting standby to 120 (10 minutes) APM_level = 1
그리고 초기 드라이브 상태 hdparm -C /dev/sd[d-z]는 " active / idle "입니다.
이러한 모든 /dev/sd[d-z]드라이브는 동일한 제조업체 및 모델에서 분리되었으며 파티션되지 않았으며 포맷되지 않았으며 마운트되지 않았습니다.
15 분 동안 기다린 후에도 드라이브 상태는 여전히 " 활성 / 유휴 "입니다.
드라이브를 사용하여 "IDE 드라이브가 저전력 소비 대기 모드로 즉시 들어가도록 강제 실행"을 발행 할 때만 hdparm -y /dev/sd[d-z]" 대기 "상태가됩니다.
hdparm이 시간 초과 값을 지정한 후에 드라이브가 저전력 소비 대기 상태로 들어 가지 않는 이유는 무엇 입니까?
더 많은 드라이브 사양 hdparm -I /dev/sdd
/dev/sdd:
ATA device, with non-removable media
Model Number: Hitachi HDS5C3020BLE630
Firmware Revision: MZ4OAAB0
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:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 268435455
LBA48 user addressable sectors: 3907029168
Logical Sector size: 512 bytes
Physical Sector size: 4096 bytes
Logical Sector-0 offset: 0 bytes
device size with M = 1024*1024: 1907729 MBytes
device size with M = 1000*1000: 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
* NOP cmd
* 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)
Security:
Master password revision code = 65534
supported
not enabled
not locked
frozen
not expired: security count
not supported: enhanced erase
416min for SECURITY ERASE UNIT.
Logical Unit WWN Device Identifier: 5000cca37dc106a3
NAA : 5
IEEE OUI : 000cca
Unique ID : 37dc106a3
Checksum: correct