[mythtv-users] Should I use LVM on this new raid?
gareth.glaccum at btopenworld.com
Thu Sep 27 18:05:25 UTC 2007
>> In fairness, while Seagate IDE drives are very good, even I don't
>> expect them to run 24/7/365/100% duty.
>> The SCSI drives cost 3 times as much precisely *because* they are,
>> fact, designed to run at pretty close to 100% duty cycle for the
>> 5 years.
>> Bah, if you ask me, that's just marketing BS. Recent studies by
>> among others, have shown that a) SCSI drives are no more reliable than
>> and b) "enterprise" rated drives aren't any better, either.
>My experience doesn't agree with that, though I haven't *read* the
Data points from my experiences, well know disk manufacturer:
Standard/Desktop disks, 60 sold, duty cycle 25% on 24/7, after 4 months,
replaced 20, air-con kept constant at ~20 celsius
Enterprise/Nearline disks, 140 sold, duty cycle 40% on 24/7 after 8 months,
none replaced, air-con failure 2 weeks after deployment, room ambient went
to 75 celsius, otherwise constant at ~20 celsius
I would recommend paying the extra for nearline if you can afford it.
Archive class disks are slightly better than Desktop if you can't go to the
nearline. I personally went for archive, am running a raid 5 and bought a
cold spare for use whilst replacements are obtained.
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