nanog mailing list archives
Re: What to expect after a cooling failure
From: Jay Ashworth <jra () baylink com>
Date: Wed, 10 Jul 2013 00:04:23 -0400 (EDT)
----- Original Message -----
From: "Erik Levinson" <erik.levinson () uberflip com>
For those who have gone through such events in the past, what can one expect in terms of long-term impact...should we expect some premature component failures? Does anyone have any stats to share?
If the HDDs were spinning while above rated maximum ambient intake temp, *especially* if they're not *right out front in the intake path* (is anything not built that way anymore? Yeah; the back side of 45-drive Supermicro racks, among other things), you should probably plan on doing a preemptive replacement cycle, or at the very least, pay *very* close attention to smartctld, and have a good stock of pre-trayed replacements. Remember that you may fall in the RAID Hole if you wait for failures, and hence lose data which isn't backed up anyway -- if more drives in a raid group fail *during rebuilds*, you're essentially screwed. If your raid groups were properly dispersed across drive build dates, then this will probably be *slightly* less dangerous, but still. Also watch bearing-type fans. Cheers, -- jra -- Jay R. Ashworth Baylink jra () baylink com Designer The Things I Think RFC 2100 Ashworth & Associates http://baylink.pitas.com 2000 Land Rover DII St Petersburg FL USA #natog +1 727 647 1274
Current thread:
- What to expect after a cooling failure Erik Levinson (Jul 09)
- Re: What to expect after a cooling failure Bryan Tong (Jul 09)
- Re: What to expect after a cooling failure Erik Levinson (Jul 09)
- Re: What to expect after a cooling failure Jay Ashworth (Jul 09)
- Re: What to expect after a cooling failure Jimmy Hess (Jul 09)
- Re: What to expect after a cooling failure Bryan Tong (Jul 09)
- Re: What to expect after a cooling failure Jake Khuon (Jul 09)
- Re: What to expect after a cooling failure Mikael Abrahamsson (Jul 09)
- Message not available
- Re: What to expect after a cooling failure Tri Tran (Jul 09)
- Re: What to expect after a cooling failure Bryan Tong (Jul 09)
- Re: What to expect after a cooling failure Stefan Förster (Jul 09)
- Re: What to expect after a cooling failure George Herbert (Jul 10)
- RE: What to expect after a cooling failure Lorell Hathcock (Jul 10)
- Re: What to expect after a cooling failure Daniel Taylor (Jul 10)
- RE: What to expect after a cooling failure Tony Patti (Jul 10)