Why Not To Shout At Your Disk Array

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Why Not To Shout At Your Disk Array

Posted by timothy on Thursday January 1, 2009 @08:58PM from the that's-what-your-subordinates-are-for dept.

Brendan Gregg of Sun's Fishworks lab has an interesting video demo up at YouTube demonstrating just how bad vibes, if expressed with sufficient volume in front of a rack full of disks, can cause a spike in disk latency. White noise, evidently, doesn't do them much harm. (Maybe they just feel awkward to get yelled at on camera.)

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Interesting... by TFer_Atvar · 2009-01-01 21:08 · Score: 4, Insightful

I wonder if the latency would vary by the pitch and tone of the person yelling. If that's the case, I'd wonder if that could be extrapolated into reconstructing whatever was being said. Granted, if you're yelling that loud, the person in the next county is more likely to hear you first.
Re:Why isn't this under idle? by Anonymous Coward · 2009-01-01 21:44 · Score: 1, Insightful

On a bright side, you can read all the crap without having to tolerate that god aweful stylesheet!
Re:JBODs? by drsmithy · 2009-01-01 23:29 · Score: 2, Insightful

Or did I just mis-hear him?
"JBOD" in this context will be a reference to the style of disk array (eg: vs one with a RAID controller like the Dell MD3000), not the ZFS RAID level.
Re:Secret Fact : Ultrasonic noise at low volumes ! by Anonymous Coward · 2009-01-02 02:16 · Score: 1, Insightful

Accounts are overrated. What happened to judging the content rather than the person?
Re:Looking up? by Bengie · 2009-01-02 02:42 · Score: 2, Insightful

because all server admins are busy 24/7?
Server Admins are getting paid to 'watch' the servers. They have plenty of pseudo-free time. It's when stuff is breaking that they're busy. Not to mention a good admin in large server area will have software like that person had to watch drive latency.