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>
 102
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 104     </div>
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 109     <div id="sidebar">
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 112
 113 <h2>Archive</h2>
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 115
 116 <li>2020
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 184
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 186
 187 <li>2017
 188 <ul>
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 209
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 211
 212 </ul></li>
 213
 214 <li>2016
 215 <ul>
 216
 217 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/01/">January (3)</a></li>
 218
 219 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/02/">February (2)</a></li>
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 236
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 238
 239 <li><a href="http://people.skolelinux.org/pere/blog/archive/2016/12/">December (5)</a></li>
 240
 241 </ul></li>
 242
 243 <li>2015
 244 <ul>
 245
 246 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/01/">January (7)</a></li>
 247
 248 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/02/">February (6)</a></li>
 249
 250 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/03/">March (1)</a></li>
 251
 252 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/04/">April (4)</a></li>
 253
 254 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/05/">May (3)</a></li>
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 256 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/06/">June (4)</a></li>
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 259
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 261
 262 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/09/">September (2)</a></li>
 263
 264 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/10/">October (9)</a></li>
 265
 266 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/11/">November (6)</a></li>
 267
 268 <li><a href="http://people.skolelinux.org/pere/blog/archive/2015/12/">December (3)</a></li>
 269
 270 </ul></li>
 271
 272 <li>2014
 273 <ul>
 274
 275 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/01/">January (2)</a></li>
 276
 277 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/02/">February (3)</a></li>
 278
 279 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/03/">March (8)</a></li>
 280
 281 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/04/">April (7)</a></li>
 282
 283 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
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 285 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
 286
 287 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
 288
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 296
 297 <li><a href="http://people.skolelinux.org/pere/blog/archive/2014/12/">December (5)</a></li>
 298
 299 </ul></li>
 300
 301 <li>2013
 302 <ul>
 303
 304 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 305
 306 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 307
 308 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
 309
 310 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
 311
 312 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
 313
 314 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
 315
 316 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
 317
 318 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
 319
 320 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
 321
 322 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
 323
 324 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/11/">November (9)</a></li>
 325
 326 <li><a href="http://people.skolelinux.org/pere/blog/archive/2013/12/">December (3)</a></li>
 327
 328 </ul></li>
 329
 330 <li>2012
 331 <ul>
 332
 333 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
 334
 335 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
 336
 337 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
 338
 339 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
 340
 341 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
 342
 343 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
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 345 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
 346
 347 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
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 349 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
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 351 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
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 353 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
 354
 355 <li><a href="http://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
 356
 357 </ul></li>
 358
 359 <li>2011
 360 <ul>
 361
 362 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
 363
 364 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
 365
 366 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
 367
 368 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
 369
 370 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
 371
 372 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
 373
 374 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
 375
 376 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
 377
 378 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
 379
 380 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
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 382 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
 383
 384 <li><a href="http://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
 385
 386 </ul></li>
 387
 388 <li>2010
 389 <ul>
 390
 391 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
 392
 393 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
 394
 395 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
 396
 397 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
 398
 399 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
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 401 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
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 403 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
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 405 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
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 407 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
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 409 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
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 411 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
 412
 413 <li><a href="http://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
 414
 415 </ul></li>
 416
 417 <li>2009
 418 <ul>
 419
 420 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
 421
 422 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
 423
 424 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
 425
 426 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
 427
 428 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
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 430 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
 431
 432 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
 433
 434 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
 435
 436 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
 437
 438 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
 439
 440 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
 441
 442 <li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
 443
 444 </ul></li>
 445
 446 <li>2008
 447 <ul>
 448
 449 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
 450
 451 <li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
 452
 453 </ul></li>
 454
 455 </ul>
 456
 457
 458
 459 <h2>Tags</h2>
 460 <ul>
 461
 462  <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (16)</a></li>
 463
 464  <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
 465
 466  <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
 467
 468  <li><a href="http://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
 469
 470  <li><a href="http://people.skolelinux.org/pere/blog/tags/betalkontant">betalkontant (9)</a></li>
 471
 472  <li><a href="http://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (11)</a></li>
 473
 474  <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (17)</a></li>
 475
 476  <li><a href="http://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
 477
 478  <li><a href="http://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (2)</a></li>
 479
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 588  <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (42)</a></li>
 589
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 591
 592
 593     </div>
 594     <p style="text-align: right">
 595  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
 596 </p>
 597
 598   </body>
 599 </html>