zlacker

>>tpmx+(OP)
HN was down because the failover server also failed: https://twitter.com/HNStatus/status/1545409429113229312

Double disk failure is improbable but not impossible.

The most impressive thing is that there seems to be no dataloss, almost whatsoever. Whatever the backup system is, it seems rock solid.

>>sillys+z
> Double disk failure is improbable but not impossible.

It's not even improbable if the disks are the same kind purchased at the same time.

>>davedu+b2
I once had a small fleet of SSDs fail because they had some uptime counters that overflowed after 4.5 years, and that somehow persistently wrecked some internal data structures. It turned them into little, unrecoverable bricks.

It was not awesome seeing a bunch of servers go dark in just about the order we had originally powered them on. Not a fun day at all.

>>kabdib+iv
You are never going to guess how long the HN SSDs were in the servers... never ever... OK... I'll tell you: 4.5years. I am not even kidding.

>>mikiem+Lb1
Let me narrow my guess: They hit 4 years, 206 days and 16 hours . . . or 40,000 hours.

And that they were sold by HP or Dell, and manufactured by SanDisk.

Do I win a prize?

(None of us win prizes on this one).

>>kabdib+md1
I wonder if it might be closer to 40,032 hours. The official Dell wording [1] is "after approximately 40,000 hours of usage". 2^57 nanoseconds is 40031.996687737745 hours. Not sure what's special about 57, but a power of 2 limit for a counter makes sense. That time might include some manufacturer testing too.

[1] https://www.reddit.com/r/sysadmin/comments/f5k95v/dell_emc_u...

>>mkl+os1
See! People should register via mail for those important notifications! (Or alternatively do quarterly checks that your firmware is up to date).