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  • "Backblaze Drive Stats for Q1 2021"

    From Lynn McGuire@lynnmcguire5@gmail.com to comp.sys.ibm.pc.hardware.storage,alt.comp.hardware.pc-homebuilt on Tue May 4 16:39:00 2021
    From Newsgroup: comp.sys.ibm.pc.hardware.storage

    "Backblaze Drive Stats for Q1 2021"
    https://www.backblaze.com/blog/backblaze-hard-drive-stats-q1-2021/

    "As of March 31, 2021, Backblaze had 175,443 drives spread across four
    data centers on two continents. Of that number, there were 3,187 boot
    drives and 172,256 data drives. The boot drives consisted of 1,669 hard
    drives and 1,518 SSDs. This report will review the quarterly and
    lifetime failure rates for our data drives, and we’ll compare the
    failure rates of our HDD and SSD boot drives."

    Whoa, they got some WDC 14 and 16 TB drives ! And 10 of the 8,400 WDC fourteen TB drives have already failed !

    They are moving to SSD drives for boot drives. They published the
    Lifetime failure rates. 8 out of the 1,518 SSD boot drives failed
    (0.65%). 559 out of the 1,669 hard boot drives failed (6.04%). "The
    average age of the SSD drives is 12.7 months, and the average age of the
    HDD drives is 49.6 months."

    Note: The HGST drives have been really good drives compared to the
    Seagates which are quite good themselves.

    Lynn


    --- Synchronet 3.18c-Linux NewsLink 1.113
  • From Mark Perkins@mark@none.invalid to comp.sys.ibm.pc.hardware.storage,alt.comp.hardware.pc-homebuilt on Thu May 6 02:45:30 2021
    From Newsgroup: comp.sys.ibm.pc.hardware.storage

    On Tue, 4 May 2021 16:39:00 -0500, Lynn McGuire <lynnmcguire5@gmail.com>
    wrote:

    "Backblaze Drive Stats for Q1 2021"
    https://www.backblaze.com/blog/backblaze-hard-drive-stats-q1-2021/

    <snip>

    They are moving to SSD drives for boot drives. They published the
    Lifetime failure rates. 8 out of the 1,518 SSD boot drives failed
    (0.65%). 559 out of the 1,669 hard boot drives failed (6.04%).

    It seems that I've forgotten how to calculate percentages.

    8 out of 1518 appears to be about 0.52%, versus 0.65%

    559 out of 1669 appears to be about 33.5%, versus 6.04%

    I guess I should go read the article to see how they calculate that.

    --- Synchronet 3.18c-Linux NewsLink 1.113
  • From Lynn McGuire@lynnmcguire5@gmail.com to comp.sys.ibm.pc.hardware.storage,alt.comp.hardware.pc-homebuilt on Fri May 7 16:03:49 2021
    From Newsgroup: comp.sys.ibm.pc.hardware.storage

    On 5/6/2021 2:45 AM, Mark Perkins wrote:
    On Tue, 4 May 2021 16:39:00 -0500, Lynn McGuire <lynnmcguire5@gmail.com> wrote:

    "Backblaze Drive Stats for Q1 2021"
    https://www.backblaze.com/blog/backblaze-hard-drive-stats-q1-2021/

    <snip>

    They are moving to SSD drives for boot drives. They published the
    Lifetime failure rates. 8 out of the 1,518 SSD boot drives failed
    (0.65%). 559 out of the 1,669 hard boot drives failed (6.04%).

    It seems that I've forgotten how to calculate percentages.

    8 out of 1518 appears to be about 0.52%, versus 0.65%

    559 out of 1669 appears to be about 33.5%, versus 6.04%

    I guess I should go read the article to see how they calculate that.

    The percentages take time into account.

    Lynn

    --- Synchronet 3.18c-Linux NewsLink 1.113