[MacPorts] #60178: Don't use SSDs for buildbot workers

[MacPorts]

#60178: Don't use SSDs for buildbot workers
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  Reporter:  ryandesign      |      Owner:  admin@…
      Type:  defect          |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  server/hosting  |    Version:
Resolution:                  |   Keywords:
      Port:                  |
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Comment (by fhgwright):

 Replying to [comment:4 danielluke]:
 > Fred - do you know of any published data (this 2016 Usenix paper is
 nice, but I'd be interested in newer data -
 https://www.usenix.org/system/files/conference/fast16/fast16-papers-
 schroeder.pdf ).

 No, my information is only internal, and somewhat older since I left
 Google in 2013.

 I suspect that the replacement rate for HDDs would have gone down if
 anyone had implemented my suggestion to add surface scans to the automated
 repair workflow.  A simple reinstall without a surface scan may miss many
 bad blocks.

 It's also worth noting that, in the Google server context, almost all data
 is part of a higher-level redundant storage system, where bad blocks (or
 even entire failed machines) don't result in any real data loss.  Home and
 small-business systems don't usually have that luxury.

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Ticket URL: <https://trac.macports.org/ticket/60178#comment:5>
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