玄人志向GW2.5OR-U3を買った
2.5inch SATA HDD/SSDをUSB接続するケースとして玄人志向のGW2.5OR-U3を購入しました。
この類の製品に個人的には特に拘りは無いので安価なら中華製品も選択しますが、私が購入した時点(2022/1)ではAmazon.co.jpで中華製品を凌駕して最安値っぽかったのでこれを選択しました*1。レビューを見るとあまり好評では無さそうなんですが、枯れたジャンルの製品で玄人志向(バッファロー)がわざわざ問題のある製品を発売するとは考えにくいので*2。
手元にあるWesternDigitalのWD7500BPVTという2.5inch HDDを装着し、Ubuntu20.04環境で動作確認して判った情報を紹介します。
中身
ごく普通にASMediaのASM1051EをUSB-SATA変換ブリッジに使用しているようです。
syslogより抜粋すると以下のように認識されています。
usb 2-2: new SuperSpeed Gen 1 USB device number 3 using xhci_hcd usb 2-2: New USB device found, idVendor=174c, idProduct=55aa, bcdDevice= 1.00 usb 2-2: New USB device strings: Mfr=2, Product=3, SerialNumber=1 usb 2-2: Product: ASMT105x usb 2-2: Manufacturer: ASMT usb 2-2: SerialNumber: 234567890126 scsi host0: uas scsi 0:0:0:0: Direct-Access WDC WD75 00BPVT-26HXZT3 0 PQ: 0 ANSI: 6 sd 0:0:0:0: Attached scsi generic sg0 type 0 sd 0:0:0:0: [sda] 1465149168 512-byte logical blocks: (750 GB/699 GiB) sd 0:0:0:0: [sda] 4096-byte physical blocks sd 0:0:0:0: [sda] Write Protect is off sd 0:0:0:0: [sda] Mode Sense: 43 00 00 00 sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 0:0:0:0: [sda] Optimal transfer size 33553920 bytes not a multiple of physical block size (4096 bytes) sda: sda1 sd 0:0:0:0: [sda] Attached SCSI disk
デバイス詳細
lsusbで詳細を確認してみると以下の通り。
$ lsusb -d 174c:55aa -v Bus 002 Device 003: ID 174c:55aa ASMedia Technology Inc. Name: ASM1051E SATA 6Gb/s bridge, ASM1053E SATA 6Gb/s bridge, ASM1153 SATA 3Gb/s bridge, ASM1153E SATA 6Gb/s bridge Couldn't open device, some information will be missing Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 3.10 bDeviceClass 0 bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 9 idVendor 0x174c ASMedia Technology Inc. idProduct 0x55aa Name: ASM1051E SATA 6Gb/s bridge, ASM1053E SATA 6Gb/s bridge, ASM1153 SATA 3Gb/s bridge, ASM1153E SATA 6Gb/s bridge bcdDevice 1.00 iManufacturer 2 iProduct 3 iSerial 1 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 0x0079 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xc0 Self Powered MaxPower 0mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 8 Mass Storage bInterfaceSubClass 6 SCSI bInterfaceProtocol 80 Bulk-Only iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0400 1x 1024 bytes bInterval 0 bMaxBurst 15 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0400 1x 1024 bytes bInterval 0 bMaxBurst 15 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 1 bNumEndpoints 4 bInterfaceClass 8 Mass Storage bInterfaceSubClass 6 SCSI bInterfaceProtocol 98 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0400 1x 1024 bytes bInterval 0 bMaxBurst 15 MaxStreams 32 Data-in pipe (0x03) Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0400 1x 1024 bytes bInterval 0 bMaxBurst 15 MaxStreams 32 Data-out pipe (0x04) Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0400 1x 1024 bytes bInterval 0 bMaxBurst 15 MaxStreams 32 Status pipe (0x02) Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x04 EP 4 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0400 1x 1024 bytes bInterval 0 bMaxBurst 0 Command pipe (0x01)
S.M.A.R.T.確認
一部のUSB-SATA変換チップではSMART情報が読み出せないものがありますが、本製品は普通に読めます。
$ sudo smartctl -a /dev/sda smartctl 7.1 2019-12-30 r5022 [x86_64-linux-5.4.0-96-generic] (local build) Copyright (C) 2002-19, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Western Digital Scorpio Blue Serial ATA (AF) Device Model: WDC WD7500BPVT-26HXZT3 Serial Number: WD-XXXXXXXXXXXX LU WWN Device Id: X XXXXXX XXXXXXXXX Firmware Version: 03.01A03 User Capacity: 750,156,374,016 bytes [750 GB] Sector Sizes: 512 bytes logical, 4096 bytes physical Rotation Rate: 5400 rpm Device is: In smartctl database [for details use: -P show] ATA Version is: ATA8-ACS (minor revision not indicated) SATA Version is: SATA 2.6, 3.0 Gb/s Local Time is: Thu Jan 27 20:38:26 2022 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: (16080) seconds. Offline data collection capabilities: (0x7b) SMART execute Offline immediate. Auto Offline data collection on/off support. Suspend Offline collection upon new command. Offline surface scan supported. Self-test supported. 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: ( 158) minutes. Conveyance self-test routine recommended polling time: ( 5) minutes. SCT capabilities: (0x7035) SCT Status 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 0x002f 200 200 051 Pre-fail Always - 1 3 Spin_Up_Time 0x0027 181 176 021 Pre-fail Always - 1933 4 Start_Stop_Count 0x0032 099 099 000 Old_age Always - 1812 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0 7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0 9 Power_On_Hours 0x0032 098 098 000 Old_age Always - 1958 10 Spin_Retry_Count 0x0032 100 100 000 Old_age Always - 0 11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 0 12 Power_Cycle_Count 0x0032 099 099 000 Old_age Always - 1411 191 G-Sense_Error_Rate 0x0032 001 001 000 Old_age Always - 8125 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 7 193 Load_Cycle_Count 0x0032 168 168 000 Old_age Always - 98169 194 Temperature_Celsius 0x0022 123 101 000 Old_age Always - 24 (Min/Max 24/24) 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 1 200 Multi_Zone_Error_Rate 0x0008 200 200 000 Old_age Offline - 0 SMART Error Log Version: 1 No Errors Logged SMART Self-test log structure revision number 1 Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error # 1 Extended offline Completed without error 00% 1917 - # 2 Short offline Completed without error 00% 1914 - 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.
※内部に装着したWD7500BPVTの仕様がSATA 3Gbpsで、GW2.5OR-U3(というかASM1051E)自体はSATA 6Gbpsに対応しています。
雑感
以下主観評価です。
パッケージや紙説明書の雰囲気から察するに、中華製品のOEMっぽい雰囲気はあります。筐体は特に高級感も安っぽくもない樹脂製ですが単なるコモディティ製品なので必要十分かと思います。発熱が多いHDD/SSDを使用する場合はアルミ筐体など放熱性に配慮されたケースを使用した方が良いかもしれません*3が、NASに繋いで24時間常時稼働のような運用ではなく、バックアップ・アーカイブ用にアドホックにUSB接続して使用するようなユースケースなら特に問題も無いでしょう。
長期使用時の耐久性などはまだ判りませんが、枯れた製品ジャンルなので特に問題ないのではないかと想像しています。Amazon.co.jpのレビューの評判の悪さは謎ですが、初期不良などに遭遇しなければコストパフォーマンス最高の良品だと思います*4。
以上。
