blog/Some_notes_on_fault_tolerant_storage_systems.html

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   6     <title>Petter Reinholdtsen: Some notes on fault tolerant storage systems</title>
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  14  <h1>
  15      <a href="http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
  16
  17  </h1>
  18
  19 </div>
  20
  21
  22     <div class="entry">
  23       <div class="title">Some notes on fault tolerant storage systems</div>
  24       <div class="date"> 1st November 2017</div>
  25       <div class="body"><p>If you care about how fault tolerant your storage is, you might
  26 find these articles and papers interesting.  They have formed how I
  27 think of when designing a storage system.</p>
  28
  29 <ul>
  30
  31 <li>USENIX :login; <a
  32 href="https://www.usenix.org/publications/login/summer2017/ganesan">Redundancy
  33 Does Not Imply Fault Tolerance.  Analysis of Distributed Storage
  34 Reactions to Single Errors and Corruptions</a> by Aishwarya Ganesan,
  35 Ramnatthan Alagappan, Andrea C. Arpaci-Dusseau, and Remzi
  36 H. Arpaci-Dusseau</li>
  37
  38 <li>ZDNet
  39 <a href="http://www.zdnet.com/article/why-raid-5-stops-working-in-2009/">Why
  40 RAID 5 stops working in 2009</a> by Robin Harris</li>
  41
  42 <li>ZDNet
  43 <a href="http://www.zdnet.com/article/why-raid-6-stops-working-in-2019/">Why
  44 RAID 6 stops working in 2019</a> by Robin Harris</li>
  45
  46 <li>USENIX FAST'07
  47 <a href="http://research.google.com/archive/disk_failures.pdf">Failure
  48 Trends in a Large Disk Drive Population</a> by Eduardo Pinheiro,
  49 Wolf-Dietrich Weber and Luiz André Barroso</li>
  50
  51 <li>USENIX ;login: <a
  52 href="https://www.usenix.org/system/files/login/articles/hughes12-04.pdf">Data
  53 Integrity.  Finding Truth in a World of Guesses and Lies</a> by Doug
  54 Hughes</li>
  55
  56 <li>USENIX FAST'08
  57 <a href="https://www.usenix.org/events/fast08/tech/full_papers/bairavasundaram/bairavasundaram_html/">An
  58 Analysis of Data Corruption in the Storage Stack</a> by
  59 L. N. Bairavasundaram, G. R. Goodson, B. Schroeder, A. C.
  60 Arpaci-Dusseau, and R. H. Arpaci-Dusseau</li>
  61
  62 <li>USENIX FAST'07 <a
  63 href="https://www.usenix.org/legacy/events/fast07/tech/schroeder/schroeder_html/">Disk
  64 failures in the real world: what does an MTTF of 1,000,000 hours mean
  65 to you?</a> by B. Schroeder and G. A. Gibson.</li>
  66
  67 <li>USENIX ;login: <a
  68 href="https://www.usenix.org/events/fast08/tech/full_papers/jiang/jiang_html/">Are
  69 Disks the Dominant Contributor for Storage Failures?  A Comprehensive
  70 Study of Storage Subsystem Failure Characteristics</a> by Weihang
  71 Jiang, Chongfeng Hu, Yuanyuan Zhou, and Arkady Kanevsky</li>
  72
  73 <li>SIGMETRICS 2007
  74 <a href="http://research.cs.wisc.edu/adsl/Publications/latent-sigmetrics07.pdf">An
  75 analysis of latent sector errors in disk drives</a> by
  76 L. N. Bairavasundaram, G. R. Goodson, S. Pasupathy, and J. Schindler</li>
  77
  78 </ul>
  79
  80 <p>Several of these research papers are based on data collected from
  81 hundred thousands or millions of disk, and their findings are eye
  82 opening.  The short story is simply do not implicitly trust RAID or
  83 redundant storage systems.  Details matter.  And unfortunately there
  84 are few options on Linux addressing all the identified issues.  Both
  85 ZFS and Btrfs are doing a fairly good job, but have legal and
  86 practical issues on their own.  I wonder how cluster file systems like
  87 Ceph do in this regard.  After all, there is an old saying, you know
  88 you have a distributed system when the crash of a computer you have
  89 never heard of stops you from getting any work done.  The same holds
  90 true if fault tolerance do not work.</p>
  91
  92 <p>Just remember, in the end, it do not matter how redundant, or how
  93 fault tolerant your storage is, if you do not continuously monitor its
  94 status to detect and replace failed disks.</p>
  95
  96 <p>As usual, if you use Bitcoin and want to show your support of my
  97 activities, please send Bitcoin donations to my address
  98 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
  99 </div>
 100
 101       <div class="tags">Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/raid">raid</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin</a>.</div>
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 219
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 246
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 248
 249 <li>2013
 250 <ul>
 251
 252 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
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 275
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 277
 278 <li>2012
 279 <ul>
 280
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 304
 305 </ul></li>
 306
 307 <li>2011
 308 <ul>
 309
 310 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
 311
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 331
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 333
 334 </ul></li>
 335
 336 <li>2010
 337 <ul>
 338
 339 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
 340
 341 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
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 357 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
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 360
 361 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
 362
 363 </ul></li>
 364
 365 <li>2009
 366 <ul>
 367
 368 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
 369
 370 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
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 389
 390 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
 391
 392 </ul></li>
 393
 394 <li>2008
 395 <ul>
 396
 397 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
 398
 399 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
 400
 401 </ul></li>
 402
 403 </ul>
 404
 405
 406
 407 <h2>Tags</h2>
 408 <ul>
 409
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 451
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 460  <li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (9)</a></li>
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 464  <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (8)</a></li>
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 466  <li><a href="http://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (2)</a></li>
 467
 468  <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
 469
 470  <li><a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
 471
 472  <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (41)</a></li>
 473
 474  <li><a href="http://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (10)</a></li>
 475
 476  <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (299)</a></li>
 477
 478  <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (190)</a></li>
 479
 480  <li><a href="http://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (33)</a></li>
 481
 482  <li><a href="http://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
 483
 484  <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (72)</a></li>
 485
 486  <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (107)</a></li>
 487
 488  <li><a href="http://people.skolelinux.org/pere/blog/tags/raid">raid (2)</a></li>
 489
 490  <li><a href="http://people.skolelinux.org/pere/blog/tags/reactos">reactos (1)</a></li>
 491
 492  <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
 493
 494  <li><a href="http://people.skolelinux.org/pere/blog/tags/rfid">rfid (3)</a></li>
 495
 496  <li><a href="http://people.skolelinux.org/pere/blog/tags/robot">robot (10)</a></li>
 497
 498  <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
 499
 500  <li><a href="http://people.skolelinux.org/pere/blog/tags/ruter">ruter (6)</a></li>
 501
 502  <li><a href="http://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
 503
 504  <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (54)</a></li>
 505
 506  <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
 507
 508  <li><a href="http://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (5)</a></li>
 509
 510  <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (55)</a></li>
 511
 512  <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (6)</a></li>
 513
 514  <li><a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (12)</a></li>
 515
 516  <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (55)</a></li>
 517
 518  <li><a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (4)</a></li>
 519
 520  <li><a href="http://people.skolelinux.org/pere/blog/tags/usenix">usenix (2)</a></li>
 521
 522  <li><a href="http://people.skolelinux.org/pere/blog/tags/valg">valg (9)</a></li>
 523
 524  <li><a href="http://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri (11)</a></li>
 525
 526  <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (66)</a></li>
 527
 528  <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
 529
 530  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (41)</a></li>
 531
 532 </ul>
 533
 534
 535     </div>
 536     <p style="text-align: right">
 537  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
 538 </p>
 539
 540   </body>
 541 </html>