USB 3.1接続の外付けケースと、2テラバイト 2.5inch HDDを購入したので、素性の調査とベンチマークを行った。
購入したHDDとUSB接続ケース
・ 東芝製 2.5inch HDD MQ04ABD200 (2TB, 5400rpm, SMR) 税込 6,040円
・ GREEN HOUSE製 2.5inch ドライブケース GH-HDCU325A（USB 3.1 Gen 2) 税込1,682円
東芝製 2.5inch HDD MQ04ABD200の仕様 （東芝のMQ04説明ページより）
GREEN HOUSE製 2.5inch ドライブケース GH-HDCU325Aの仕様 （GREEN HOUSEの説明ページより）
HDD（MQ04ABD200）とドライブケース（GH-HDCU325A）
Linuxでの認識状況とベンチマーク
USBデバイスとしての認識状況
$ lsusb Bus 002 Device 002: ID 174c:55aa ASMedia Technology Inc. ASM1051E SATA 6Gb/s bridge, ASM1053E SATA 6Gb/s bridge, ASM1153 SATA 3Gb/s bridge Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 046d:c534 Logitech, Inc. Unifying Receiver Bus 001 Device 003: ID 8087:0a2a Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub $ lsusb -t /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 10000M |__ Port 3: Dev 2, If 0, Class=Mass Storage, Driver=uas, 5000M /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/16p, 480M |__ Port 7: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 12M |__ Port 7: Dev 2, If 1, Class=Human Interface Device, Driver=usbhid, 12M |__ Port 14: Dev 3, If 0, Class=Wireless, Driver=btusb, 12M |__ Port 14: Dev 3, If 1, Class=Wireless, Driver=btusb, 12M
SMART情報など
SMART情報、ハードウエア情報
$ sudo smartctl -a /dev/sdb smartctl 6.6 2016-05-31 r4324 [x86_64-linux-5.4.0-91-generic] (local build) Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Device Model: TOSHIBA MQ04ABD200 Serial Number: 313NP3XJT LU WWN Device Id: 5 000039 aa2c81d42 Firmware Version: JT001U User Capacity: 2,000,398,934,016 bytes [2.00 TB] Sector Sizes: 512 bytes logical, 4096 bytes physical Rotation Rate: 5400 rpm Form Factor: 2.5 inches Device is: Not in smartctl database [for details use: -P showall] ATA Version is: ACS-3 T13/2161-D revision 5 SATA Version is: SATA >3.2 (0x1ff), 3.0 Gb/s (current: 3.0 Gb/s) Local Time is: Tue Dec 21 19:29:28 2021 JST SMART support is: Available - device has SMART capability. SMART support is: Enabled === START OF READ SMART DATA SECTION === SMART overall-health self-assessment test result: PASSED General SMART Values: Offline data collection status: (0x00) Offline data collection activity was never started. Auto Offline Data Collection: Disabled. Self-test execution status: ( 0) The previous self-test routine completed without error or no self-test has ever been run. Total time to complete Offline data collection: ( 120) seconds. Offline data collection capabilities: (0x5b) SMART execute Offline immediate. Auto Offline data collection on/off support. Suspend Offline collection upon new command. Offline surface scan supported. Self-test supported. No Conveyance Self-test supported. Selective Self-test supported. SMART capabilities: (0x0003) Saves SMART data before entering power-saving mode. Supports SMART auto save timer. Error logging capability: (0x01) Error logging supported. General Purpose Logging supported. Short self-test routine recommended polling time: ( 2) minutes. Extended self-test routine recommended polling time: ( 342) minutes. SCT capabilities: (0x003d) SCT Status supported. SCT Error Recovery Control supported. SCT Feature Control supported. SCT Data Table supported. SMART Attributes Data Structure revision number: 16 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x000b 100 100 050 Pre-fail Always - 0 2 Throughput_Performance 0x0005 100 100 050 Pre-fail Offline - 0 3 Spin_Up_Time 0x0027 100 100 001 Pre-fail Always - 2198 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 2 5 Reallocated_Sector_Ct 0x0033 100 100 050 Pre-fail Always - 0 7 Seek_Error_Rate 0x000b 100 100 050 Pre-fail Always - 0 8 Seek_Time_Performance 0x0005 100 100 050 Pre-fail Offline - 0 9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 0 10 Spin_Retry_Count 0x0033 100 100 030 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 1 191 G-Sense_Error_Rate 0x0032 100 100 000 Old_age Always - 0 192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 0 193 Load_Cycle_Count 0x0032 100 100 000 Old_age Always - 5 194 Temperature_Celsius 0x0022 100 100 000 Old_age Always - 18 (Min/Max 17/26) 196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0 197 Current_Pending_Sector 0x0032 100 100 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0030 100 100 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x0032 200 253 000 Old_age Always - 0 220 Disk_Shift 0x0002 100 100 000 Old_age Always - 0 222 Loaded_Hours 0x0032 100 100 000 Old_age Always - 0 223 Load_Retry_Count 0x0032 100 100 000 Old_age Always - 0 224 Load_Friction 0x0022 100 100 000 Old_age Always - 0 226 Load-in_Time 0x0026 100 100 000 Old_age Always - 276 240 Head_Flying_Hours 0x0001 100 100 001 Pre-fail Offline - 0 SMART Error Log Version: 1 No Errors Logged SMART Self-test log structure revision number 1 No self-tests have been logged. [To run self-tests, use: smartctl -t] SMART Selective self-test log data structure revision number 1 SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS 1 0 0 Not_testing 2 0 0 Not_testing 3 0 0 Not_testing 4 0 0 Not_testing 5 0 0 Not_testing Selective self-test flags (0x0): After scanning selected spans, do NOT read-scan remainder of disk. If Selective self-test is pending on power-up, resume after 0 minute delay. $ sudo hdparm -I /dev/sdb /dev/sdb: ATA device, with non-removable media Model Number: TOSHIBA MQ04ABD200 Serial Number: 313NP3XJT Firmware Revision: JT001U Transport: Serial, ATA8-AST, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6, SATA Rev 3.0 Standards: Used: unknown (minor revision code 0x006d) Supported: 10 9 8 7 6 5 Likely used: 10 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 = unknown Form Factor: 2.5 inch Nominal Media Rotation Rate: 5400 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: 128 DMA: sdma0 sdma1 sdma2 mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 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 * General Purpose Logging feature set * WRITE_{DMA|MULTIPLE}_FUA_EXT * 64-bit World wide name * IDLE_IMMEDIATE with UNLOAD Write-Read-Verify feature set * WRITE_UNCORRECTABLE_EXT command * {READ,WRITE}_DMA_EXT_GPL commands * Segmented DOWNLOAD_MICROCODE unknown 119[6] unknown 119[9] * Gen1 signaling speed (1.5Gb/s) * Gen2 signaling speed (3.0Gb/s) * Native Command Queueing (NCQ) * Host-initiated interface power management * Phy event counters * Idle-Unload when NCQ is active * Host automatic Partial to Slumber transitions * Device automatic Partial to Slumber transitions * READ_LOG_DMA_EXT equivalent to READ_LOG_EXT DMA Setup Auto-Activate optimization Device-initiated interface power management * 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) * reserved 69[1] * reserved 69[3] * DOWNLOAD MICROCODE DMA command Security: Master password revision code = 65534 supported not enabled not locked not frozen not expired: security count supported: enhanced erase 414min for SECURITY ERASE UNIT. 414min for ENHANCED SECURITY ERASE UNIT. Logical Unit WWN Device Identifier: 5000039aa2c81d42 NAA : 5 IEEE OUI : 000039 Unique ID : aa2c81d42 Checksum: correct
ベンチマークで、サンプルサイズを50MBにすると、書き込み速度のグラフが途中でがくんと落ちているのが分かる。これは、SMR方式のメディアキャッシュがここでオーバーフローしてキャッシュが効かなくなった地点だと思われる。SMR方式での書き込みベンチマークは、キャッシュ速度を図っているようなものなので、計測された速度はほぼ意味のない値だと思われる。
MQ04ABD200 ベンチマーク（サンプルサイズ 10MB）
MQ04ABD200 ベンチマーク（サンプルサイズ 50MB）
Windowsでの認識状況とベンチマーク
MQ04ABD200のSMART情報（Crystal Disk Info）
MQ04ABD200のベンチマーク結果（Crystal Disk Mark）
