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35 lines
2.7 KiB
Plaintext
35 lines
2.7 KiB
Plaintext
Episode: 2722
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Title: HPR2722: RAID 6 a short description
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Source: https://hub.hackerpublicradio.org/ccdn.php?filename=/eps/hpr2722/hpr2722.mp3
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Transcribed: 2025-10-19 15:37:44
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---
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This in HPR episode 2007-122 entitled, RAID-6 a short description, it is hosted by NAWP
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and in about 3 minutes long, and Karimaneck's visit flag, the summary is, how RAID-6 works.
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This episode of HPR is brought to you by an honesthost.com.
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Get 15% discount on all shared hosting with the offer code HPR-15, that's HPR-15.
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Better web hosting that's honest and fair, at An Honesthost.com.
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Good day, I would like to talk to you about RAID-6, and so RAID-6 the minimum is 4 disk,
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and just like RAID-5, this does block level striping.
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So that means it strives across all disk in the array or in the loan, and picture a diagram with 4 cylinders in it,
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and each disk is labeled this one, this two, this three, this four, and so each block has an alpha-numeric thing.
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And so you have five blocks, so it's A, B, C, D, E, F, and these blocks are spread out over these four disks.
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And then the parity disk, there's two parities for each one.
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So it's a dual parity solution, so the parity blocks are P1, P2, and P3.
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And these are spread out over the disk, and so then you would have the second parity would, of course, be 4, P4, P5, and P6.
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And this, when you do this, again, it's two parity blocks for each data block written.
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And the reason this is so great is that it can handle two disk failures.
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And this RAID configuration is complex to implement in a RAID controller, so because it has to calculate two parity data for each block.
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And so, for instance, when a drive does fail and you pull it out, well then you put in a new one, and then the controller has to process the parity, and this takes quite a while.
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And so this is why in enterprise arrays, you always look at how many cores each controller has in order to make that work.
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Okay, so this is, that's about it, for RAID 6, block striped, two distributed parity solution.
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All right, you'll have a fantastic time, and take care. Bye.
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You've been listening to HekaPublic Radio at HekaPublicRadio.org.
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We are a community podcast network that releases shows every weekday, Monday through Friday.
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Today's show, like all our shows, was contributed by an HBR listener like yourself.
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If you ever thought of recording a podcast, then click on our contributing to find out how easy it really is.
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HekaPublic Radio was founded by the Digital Dove Pound and the Infonomicom Computer Club, and is part of the binary revolution at binrev.com.
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If you have comments on today's show, please email the host directly, leave a comment on the website, or record a follow-up episode yourself.
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Unless otherwise stated, today's show is released under Creative Commons, Attribution, ShareLife, 3.0 license.
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