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| == Anwendung ==
| | '''Hdparm/Anwendung''' |
| <syntaxhighlight lang="bash" highlight="1" line>
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| </syntaxhighlight>
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| === Alle Informationen anzeigen ===
| |
| # '''hdparm -I /dev/sdb'''
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|
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| /dev/sdb:
| | {| class="wikitable options big" |
| | |- |
| | | -z || Zwingt den Kernel, die Partitionstabelle des gegebenen Gerätes neu einzulesen. Erfüllt die gleiche Aufgabe wie ''"sfdisk -R"'', ''"blockdev --rereadpt"'' oder ''"blktool <device> reread-part"''. Kann nützlich sein, um eine manuell geänderte Partitionstabelle ohne Neustart zu aktualisieren (Beispielsweise MBR mit dd überschrieben oder Partitionstabelle zurück gespielt) |
| | |- |
| | | -w || Führt einen Laufwerksreset durch. Diese Funktion ist sehr gefährlich, da sie das ganze System gefährden kann |
| | |} |
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| ATA device, with non-removable media
| | [[Kategorie:Linux/Storage/Hardware]] |
| Model Number: Hitachi HDS722020ALA330
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| Serial Number: JK1160YAGMUVRT
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| Firmware Revision: JKAOA3MA
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| Transport: Serial, ATA8-AST, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6; Revision: ATA8-AST T13 Project D1697 Revision 0b
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| Standards:
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| Used: unknown (minor revision code 0x0029)
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| Supported: 8 7 6 5
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| Likely used: 8
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| Configuration:
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| Logical max current
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| cylinders 16383 16383
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| heads 16 16
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| sectors/track 63 63
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| --
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| CHS current addressable sectors: 16514064
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| LBA user addressable sectors: 268435455
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| LBA48 user addressable sectors: 3907029168
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| Logical/Physical Sector size: 512 bytes
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| device size with M = 1024*1024: 1907729 MBytes
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| device size with M = 1000*1000: 2000398 MBytes (2000 GB)
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| cache/buffer size = 29999 KBytes (type=DualPortCache)
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| Form Factor: 3.5 inch
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| Nominal Media Rotation Rate: 7200
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| Capabilities:
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| LBA, IORDY(can be disabled)
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| Queue depth: 32
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| Standby timer values: spec'd by Standard, no device specific minimum
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| R/W multiple sector transfer: Max = 16 Current = 0
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| Advanced power management level: disabled
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| DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6
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| Cycle time: min=120ns recommended=120ns
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| PIO: pio0 pio1 pio2 pio3 pio4
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| Cycle time: no flow control=120ns IORDY flow control=120ns
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| Commands/features:
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| Enabled Supported:
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| * SMART feature set
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| Security Mode feature set
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| * Power Management feature set
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| Write cache
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| * Look-ahead
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| * Host Protected Area feature set
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| * WRITE_BUFFER command
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| * READ_BUFFER command
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| * DOWNLOAD_MICROCODE
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| Advanced Power Management feature set
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| Power-Up In Standby feature set
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| * SET_FEATURES required to spinup after power up
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| SET_MAX security extension
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| * 48-bit Address feature set
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| * Device Configuration Overlay feature set
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| * Mandatory FLUSH_CACHE
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| * FLUSH_CACHE_EXT
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| * SMART error logging
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| * SMART self-test
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| Media Card Pass-Through
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| * General Purpose Logging feature set
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| * WRITE_{DMA|MULTIPLE}_FUA_EXT
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| * 64-bit World wide name
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| * URG for READ_STREAM[_DMA]_EXT
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| * URG for WRITE_STREAM[_DMA]_EXT
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| * WRITE_UNCORRECTABLE_EXT command
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| * Segmented DOWNLOAD_MICROCODE
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| * Gen1 signaling speed (1.5Gb/s)
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| * Gen2 signaling speed (3.0Gb/s)
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| * Native Command Queueing (NCQ)
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| * Host-initiated interface power management
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| * Phy event counters
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| * NCQ priority information
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| Non-Zero buffer offsets in DMA Setup FIS
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| * DMA Setup Auto-Activate optimization
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| Device-initiated interface power management
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| In-order data delivery
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| * Software settings preservation
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| * SMART Command Transport (SCT) feature set
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| * SCT Write Same (AC2)
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| * SCT Error Recovery Control (AC3)
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| * SCT Features Control (AC4)
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| * SCT Data Tables (AC5)
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| Security:
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| Master password revision code = 65534
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| supported
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| not enabled
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| not locked
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| not frozen
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| not expired: security count
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| not supported: enhanced erase
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| 500min for SECURITY ERASE UNIT.
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| Logical Unit WWN Device Identifier: 5000cca221c90422
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| NAA : 5
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| IEEE OUI : 000cca
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| Unique ID : 221c90422
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| Checksum: correct
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| | |
| === Bestimmte Information anzeigen ===
| |
| # hdparm -I /dev/sdb | grep "cache"
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| cache/buffer size = 29999 KBytes (type=DualPortCache)
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| Write cache
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| * Datenträger sdb hat eine "cache size" von 29,999 MB.
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| | |
| === Advanced Power Management einstellen ===
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| # '''hdparm -B 254 /dev/sda'''
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| /dev/sda:
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| setting Advanced Power Management level to 0xfe (254)
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| APM_level = 254
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| * Datenträger sda ist auf höchst mögliche Leistung eingestellt => beste Performance, aber höchster Stromverbrauch.
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| | |
| === Standby-Modus (Spindown) ===
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| * Hier auf ein Standby-Zeitlimit von 2min.
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| # '''hdparm -S 24 /dev/sda'''
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| /dev/sda:
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| setting standby to 24 (2 minutes)
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| | |
| === hdparm-Einstellungen nach einem Software-Reset beibehalten ===
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| * Hier Aktivierung bei Datenträger sda.
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| # '''hdparm -K 1 /dev/sda'''
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| /dev/sda:
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| setting drive keep features to 1 (on)
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| | |
| === Read-Lookahead-Funktion ===
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| * Hier Aktivierung beim Datenträger sda.
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| # '''hdparm -A 1 /dev/sda'''
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| /dev/sda:
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| setting drive read-lookahead to 1 (on)
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| look-ahead = 1 (on)
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| | |
| === Akkustik ===
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| ==== Akkustiklevel anzeigen ====
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| # hdparm -M /dev/sda
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| /dev/sda:
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| acoustic = 254 (128=quiet ... 254=fast)
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| | |
| * Akkustiklevel des Datenträgers sda ist auf "fast" eingestellt => schnell, aber laut.
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| | |
| ==== Akkustiklevel einstellen ====
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| * Hier auf "quiet" => geringere Performance.
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| # '''hdparm -M 128 /dev/sda'''
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| /dev/sda:
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| setting acoustic management to 128
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| acoustic = 128 (128=quiet ... 254=fast)
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| | |
| === Lesegeschwindigkeit messen ===
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| ==== Mit Cache ====
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| # '''hdparm -Tt /dev/sda'''
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| /dev/sda:
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| Timing cached reads: 6962 MB in 2.00 seconds = 3482.67 MB/sec
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| Timing buffered disk reads: 358 MB in 3.01 seconds = 119.12 MB/sec
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| | |
| ==== Ohne Cache ====
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| # hdparm -Tt --direct /dev/sda
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| | |
| /dev/sda:
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| Timing O_DIRECT cached reads: 498 MB in 2.00 seconds = 248.49 MB/sec
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| Timing O_DIRECT disk reads: 360 MB in 3.01 seconds = 119.60 MB/sec
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| | |
| === Problembehebung ===
| |