There were about 150 different models, they were cooked online for about three hours and cooked offline for another six or so all told. Includes big fat SAS enterprisey drives and cheap off-the-shelf SATA gubbins. Once we put the piping in place we added HDD temperature monitoring to our hardware data, we kept it turned on as it's just another 100GB of WORN data. Since then there's been no correlation between temperature and failure rate for us.
Our Top Tips for HDD procurement generally goes, in list of most to least important:
Avoid known bad batches/families
Avoid physical damage
Buy Hitachi, avoid Seagate. Go WD for best perf per pound if you need to go SATA,
Makre sure the enclosures are firmly bolted and there's no vibration
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Don't look at it funny or make eyes at the hard drive's bird
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...
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...
...
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Don't open the drive and place a doughnut on the platter no matter how cool it seems at the time
Similarly avoid immersing hard drive in custard
...
...
...
...
...
Watch HDD temperatures like an OCD hawk on methamphetamines
Our Top Tips for HDD procurement generally goes, in list of most to least important:
Avoid known bad batches/families
Avoid physical damage
Buy Hitachi, avoid Seagate. Go WD for best perf per pound if you need to go SATA,
Makre sure the enclosures are firmly bolted and there's no vibration
...
...
...
Don't look at it funny or make eyes at the hard drive's bird
...
...
...
...
...
...
...
Don't open the drive and place a doughnut on the platter no matter how cool it seems at the time
Similarly avoid immersing hard drive in custard
...
...
...
...
...
Watch HDD temperatures like an OCD hawk on methamphetamines