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WD EADS/EARS vs. EARX

johnodon
in Storage Devices and Controllers

Featured Replies

  • Author

How full are these drives, that can provide a significant skew in the benchmarks.

 

 

WDC_WD20EADS-00W4B0_WD-WCAVY6098461 (sdf) 1953514552                 506.86 GB

WDC_WD20EARS-00MVWB0_WD-WMAZA3373683 (sdd) 1953514552                 500.07 GB

WDC_WD20EARS-00MVWB0_WD-WMAZA3260729 (sda) 1953514552                 509.1 GB

SAMSUNG_HD204UI_S2H7J1BB121032 (sdg) 1953514552                                 891.38 GB

WDC_WD15EADS-00P8B0_WD-WCAVU0151301 (sdh) 1465138552                 992.03 GB

WDC_WD20EARX-00PASB0_WD-WCAZAF042490 (sdi) 1953514552                 1.24 TB

ST31000528AS_6VPB4VB8 (sdc) 976762552                                                         1 TB

 

FYI...a friend of mine said that he started to see a decrease in write speeds somewhere after Beta14.  I am going to revert backwards through the RCs/betas and see if I start to see an increase in write speed.  I need to wait for my parity sync to finish first.  :S

 

John

  • Quote

    Here's a speed test across all my drives using various model numbers and fill values.

     

    First Run.

    root@atlas ~ #/tmp/speedtestall.sh    
Sep 24 13:41:27 atlas speedtestall[3081]:  Start

rdevName.1: sdn => rdevModel.1: SAMSUNG HD103SJ
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md1               1.1T   754G   248G  76% /mnt/disk1
536870912 bytes (537 MB) copied, 11.6451 s, 46.1 MB/s

rdevName.2: sdo => rdevModel.2: ST31500341AS
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md2               1.6T   1.1T   444G  71% /mnt/disk2
536870912 bytes (537 MB) copied, 13.5141 s, 39.7 MB/s

rdevName.3: sdp => rdevModel.3: ST31500541AS
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md3               1.6T   1.5T    70G  96% /mnt/disk3
536870912 bytes (537 MB) copied, 19.4004 s, 27.7 MB/s

rdevName.4: sdq => rdevModel.4: ST31500341AS
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md4               1.6T   1.5T    60G  97% /mnt/disk4
536870912 bytes (537 MB) copied, 28.7872 s, 18.6 MB/s

rdevName.5: sdr => rdevModel.5: ST32000542AS
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md5               2.1T   1.7T   371G  82% /mnt/disk5
536870912 bytes (537 MB) copied, 14.4069 s, 37.3 MB/s

rdevName.6: sdt => rdevModel.6: WDC WD20EARX-00P
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md6               2.1T   1.4T   660G  68% /mnt/disk6
536870912 bytes (537 MB) copied, 16.9853 s, 31.6 MB/s

rdevName.7: sdb => rdevModel.7: WDC WD10EACS-00Z
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md7               1.1T   804G   197G  81% /mnt/disk7
536870912 bytes (537 MB) copied, 42.7366 s, 12.6 MB/s

rdevName.8: sdc => rdevModel.8: WDC WD10EACS-00Z
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md8               1.1T   805G   196G  81% /mnt/disk8
536870912 bytes (537 MB) copied, 19.3348 s, 27.8 MB/s

rdevName.9: sdd => rdevModel.9: WDC WD10EACS-00Z
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md9               1.1T   909G    92G  91% /mnt/disk9
536870912 bytes (537 MB) copied, 52.3901 s, 10.2 MB/s

rdevName.10: sdi => rdevModel.10: WDC WD10EADS-00L
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md10              1.1T   990G    12G  99% /mnt/disk10
536870912 bytes (537 MB) copied, 48.5548 s, 11.1 MB/s

rdevName.11: sdf => rdevModel.11: ST31500541AS
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md11              1.6T   1.5T    24G  99% /mnt/disk11
536870912 bytes (537 MB) copied, 141.866 s, 3.8 MB/s

rdevName.12: sdg => rdevModel.12: WDC WD10EACS-32Z
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md12              1.1T   971G    31G  97% /mnt/disk12
536870912 bytes (537 MB) copied, 22.4234 s, 23.9 MB/s

rdevName.13: sdh => rdevModel.13: WDC WD10EACS-00D
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md13              1.1T   998G   3.1G 100% /mnt/disk13
536870912 bytes (537 MB) copied, 33.1093 s, 16.2 MB/s

rdevName.14: sdj => rdevModel.14: WDC WD10EADS-00L
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md14              1.1T   849G   153G  85% /mnt/disk14
536870912 bytes (537 MB) copied, 17.5932 s, 30.5 MB/s

rdevName.15: sdk => rdevModel.15: WDC WD10EACS-00Z
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md15              1.1T   963G    38G  97% /mnt/disk15
536870912 bytes (537 MB) copied, 23.0966 s, 23.2 MB/s
Sep 24 13:49:56 atlas speedtestall[3081]:  Done.

     

    Second run. (after all the relavant filesystem inodes have been loaded into ram) 

    root@atlas ~ #/tmp/speedtestall.sh    
root@atlas ~ #date
Mon Sep 24 13:55:57 GMT+5 2012
root@atlas ~ #/tmp/speedtestall.sh    
Sep 24 13:55:59 atlas speedtestall[5850]:  Start

rdevName.1: sdn => rdevModel.1: SAMSUNG HD103SJ
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md1               1.1T   754G   247G  76% /mnt/disk1
536870912 bytes (537 MB) copied, 10.6646 s, 50.3 MB/s

rdevName.2: sdo => rdevModel.2: ST31500341AS
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md2               1.6T   1.1T   443G  71% /mnt/disk2
536870912 bytes (537 MB) copied, 11.0431 s, 48.6 MB/s

rdevName.3: sdp => rdevModel.3: ST31500541AS
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md3               1.6T   1.5T    70G  96% /mnt/disk3
536870912 bytes (537 MB) copied, 18.1072 s, 29.6 MB/s

rdevName.4: sdq => rdevModel.4: ST31500341AS
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md4               1.6T   1.5T    60G  97% /mnt/disk4
536870912 bytes (537 MB) copied, 28.1773 s, 19.1 MB/s

rdevName.5: sdr => rdevModel.5: ST32000542AS
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md5               2.1T   1.7T   371G  82% /mnt/disk5
536870912 bytes (537 MB) copied, 13.6136 s, 39.4 MB/s

rdevName.6: sdt => rdevModel.6: WDC WD20EARX-00P
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md6               2.1T   1.4T   660G  68% /mnt/disk6
536870912 bytes (537 MB) copied, 14.4106 s, 37.3 MB/s

rdevName.7: sdb => rdevModel.7: WDC WD10EACS-00Z
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md7               1.1T   805G   197G  81% /mnt/disk7
536870912 bytes (537 MB) copied, 18.1901 s, 29.5 MB/s

rdevName.8: sdc => rdevModel.8: WDC WD10EACS-00Z
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md8               1.1T   805G   196G  81% /mnt/disk8
536870912 bytes (537 MB) copied, 16.4053 s, 32.7 MB/s

rdevName.9: sdd => rdevModel.9: WDC WD10EACS-00Z
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md9               1.1T   910G    92G  91% /mnt/disk9
536870912 bytes (537 MB) copied, 17.638 s, 30.4 MB/s

rdevName.10: sdi => rdevModel.10: WDC WD10EADS-00L
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md10              1.1T   990G    11G  99% /mnt/disk10
536870912 bytes (537 MB) copied, 49.4196 s, 10.9 MB/s

rdevName.11: sdf => rdevModel.11: ST31500541AS
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md11              1.6T   1.5T    24G  99% /mnt/disk11
536870912 bytes (537 MB) copied, 140.902 s, 3.8 MB/s

rdevName.12: sdg => rdevModel.12: WDC WD10EACS-32Z
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md12              1.1T   971G    30G  98% /mnt/disk12
536870912 bytes (537 MB) copied, 21.8298 s, 24.6 MB/s

rdevName.13: sdh => rdevModel.13: WDC WD10EACS-00D
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md13              1.1T   998G   2.6G 100% /mnt/disk13
536870912 bytes (537 MB) copied, 47.5154 s, 11.3 MB/s

rdevName.14: sdj => rdevModel.14: WDC WD10EADS-00L
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md14              1.1T   849G   152G  85% /mnt/disk14
536870912 bytes (537 MB) copied, 14.0133 s, 38.3 MB/s

rdevName.15: sdk => rdevModel.15: WDC WD10EACS-00Z
Filesystem             Size   Used  Avail Use% Mounted on
/dev/md15              1.1T   963G    38G  97% /mnt/disk15
536870912 bytes (537 MB) copied, 21.6132 s, 24.8 MB/s
Sep 24 14:03:29 atlas speedtestall[5850]:  Done.

     

     

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