• 消費電力の計測にはF1205-20-4PというACアダプタを使用

IntelliPark

• ​WD WD20EARSの正しい扱い方 - (rubikitch loves (Emacs Ruby CUI Books))
• ​intellipark 対応をしてみる

  そこで、「intellipark」回避用のシェルを作成してみました。

  #!/bin/bash
  
  trap '' SIGHUP
  trap '' SIGINT
  
  
  function loopAction() {
          while true;do
                  date > /tmp/disable-intellipark;
                  sleep 5;
          done
  }
  
  loopAction &
  

• ​wdidle3 | GALACTIC FUNK

  • ​What should I do if my Western Digit... - FAQ - Synology Inc. Network Attached Storage - NEW NAS Experience
  • ​The S.M.A.R.T Attribute 193 Load/Unload counter continue to increase for the WD RE2-GP SATA II hard drives

spec

3.5

Hitachi HDP725050GLA360

• 13VA/7W

  /dev/sda:
   Timing cached reads:   2056 MB in  2.00 seconds = 1028.11 MB/sec
   Timing buffered disk reads: 266 MB in  3.01 seconds =  88.24 MB/sec
  

WDC WD5000AACS-00ZUB0

• 10VA/7W,5W

  /dev/sdc:
   Timing cached reads:   2044 MB in  2.00 seconds = 1022.36 MB/sec
   Timing buffered disk reads: 236 MB in  3.00 seconds =  78.58 MB/sec
  

ST3500320AS

• 15VA/8W

  /dev/sdd:
   Timing cached reads:   1996 MB in  2.00 seconds = 997.74 MB/sec
   Timing buffered disk reads: 306 MB in  3.02 seconds = 101.45 MB/sec
  

HDT725050VLA360

• 16VA/10W

WDC WD3000JD-22KLB0

• 15VA/9W

  /dev/sda:
   Timing cached reads:   1978 MB in  2.00 seconds = 989.19 MB/sec
   Timing buffered disk reads: 188 MB in  3.01 seconds =  62.52 MB/sec
  

WD30EZRX-00MMMB0

• 9VA/5W

• ASUS M2A-VM HDMI (BIOS: 5001)
• Knoppix 6.4.4 (Linux Microknoppix 2.6.37 #1 SMP PREEMPT Wed Feb 23 07:12:05 UTC 2011 i686 GNU/Linux)

• root@Microknoppix:~# fdisk -lu /dev/sd?

  Disk /dev/sda: 3000.6 GB, 3000592982016 bytes
  255 heads, 63 sectors/track, 364801 cylinders, total 5860533168 sectors
  Units = sectors of 1 * 512 = 512 bytes
  Sector size (logical/physical): 512 bytes / 4096 bytes
  I/O size (minimum/optimal): 4096 bytes / 4096 bytes
  Disk identifier: 0x00000000
  
  Disk /dev/sda doesn't contain a valid partition table
  

• root@Microknoppix:~# hdparm -tT /dev/sda

  /dev/sda:
   Timing cached reads:   4720 MB in  2.00 seconds = 2360.98 MB/sec
   Timing buffered disk reads: 370 MB in  3.01 seconds = 122.93 MB/sec
  

---

• GIGABYTE GA-5YASV-RH (NEC Express5800/110Ge)
• Intel Core2 E8400
• Ubuntu 10.04.4 LTS

• $ sudo hdparm -tT /dev/sd?

  /dev/sdb:
   Timing cached reads:   15076 MB in  2.00 seconds = 7546.84 MB/sec
   Timing buffered disk reads:  390 MB in  3.01 seconds = 129.58 MB/sec
  

• $ sudo dd if=/dev/zero of=/dev/sdb bs=4096 count=1048576

  1048576+0 records in
  1048576+0 records out
  4294967296 bytes (4.3 GB) copied, 34.005 s, 126 MB/s
  

• $ sudo badblocks -svw /dev/sdb

  100.00% done, 65:50:08 elapsed
  Pass completed, 0 bad blocks found.
  

WD30EFRX-68AX9N0

• GIGABYTE GA-5YASV-RH (NEC Express5800/110Ge)
• Intel Core2 E8400
• Ubuntu 10.04.4 LTS

• $sudo hdparm -tT /dev/sd?

  /dev/sdc:
   Timing cached reads:   15058 MB in  2.00 seconds = 7538.21 MB/sec
   Timing buffered disk reads:  466 MB in  3.00 seconds = 155.21 MB/sec
  

• $ sudo dd if=/dev/zero of=/dev/sdc bs=4096 count=1048576

  1048576+0 records in
  1048576+0 records out
  4294967296 bytes (4.3 GB) copied, 28.5866 s, 150 MB/s
  

• $ sudo badblocks -svw /dev/sdc

  100.00% done, 58:21:15 elapsed
  Pass completed, 0 bad blocks found.
  

WD60EFRX-68MYMN1

• GIGABYTE G31M-ES2L
• Intel Core2 E8400
• Ubuntu 12.04.3 LTS

• $ sudo hdparm -tT /dev/sdb

  /dev/sdb:
   Timing cached reads:   15292 MB in  2.00 seconds = 7655.24 MB/sec
   Timing buffered disk reads: 492 MB in  3.01 seconds = 163.72 MB/sec
  

• $ sudo dd if=/dev/zero of=/dev/sdb bs=4096 count=1048576

  1048576+0 records in
  1048576+0 records out
  4294967296 bytes (4.3 GB) copied, 28.0993 s, 153 MB/s
  

2.5

HITACHI IC25N020ATMR04-0

• IDE 4200rpm 20GB

FUJITSU MHV2100AH

• IDE 5400rpm 100GB

    5 Reallocated_Sector_Ct   0x0033   100   100   024    Pre-fail  Always       -       1 (1999, 1)
  

• no badblocks
• hdparm -tT

  /dev/sda:
   Timing cached reads:   908 MB in  2.00 seconds = 453.88 MB/sec
   Timing buffered disk reads: 114 MB in  3.03 seconds =  37.59 MB/sec
  

Hitachi HTS541612J9AT00 120GB

• SMART

  # 1  Extended offline    Completed: read failure       90%       407         24474713
  

• hdparm -tT

  /dev/sdb:
   Timing cached reads:   946 MB in  2.00 seconds = 472.53 MB/sec
   Timing buffered disk reads: 100 MB in  3.03 seconds =  32.96 MB/sec