Lanny Marcus wrote:
Message: 31
Date: Tue, 15 May 2007 11:25:42 +0800
From: Feizhou <feizhou@xxxxxxxxxxxx>
Subject: Re: Re: Anaconda doesn't support raid10
Message-ID: <46492836.3010808@xxxxxxxxxxxx>
<snip>
<the reliability factor has been proven to be the same across the board.
<You must have missed the thread on the Google report on various drives
<that they use
Feizhou: Yes, I did not see that. If the MTBF's are the same, then the
Performance specs you provided are what one needs to go with, when choosing
components. If Google has posted Failure rates, for the drives they use, that
would be more meaningful than MTBF by the drive manufacturer, for that
particular drive model.
They noted that there was no particular difference in failure rates
whether they are high performance industrial drives or consumer drives.
Basically they said that manufacturers claims of MBTF amounted to
naught. It was the operating environment that determined the failure
rate of drives, namely, fluctuating temperatures.
Questions: Is it your belief that all PATA/SATA/SCSI drives made by one
manufacturer have the same MTBF? (I find that hard to believe. However,
that might be the case.....) Also, is it your belief that these drives,
made by different manufacturers, all have the same MTBF?
Bad batches aside, no I do not believe that different drives from
different manufacturers have the same MTBF. Case in point are the IBM
'glass' Deskstars. However, I personally choose Seagate drives and I
have not had problems with them. In my previous job at an ISP, they used
maxtors and western digital drives and I did not notice any particular
brand being more troublesome (firmware and controller incompatibilities
excepted) nor do I get the impression that they were better or worse
than Seagate. I have no comment on newer manufacturers like Hitachi.
Due to the fact that those boxes run 24/7, I believe that that enabled
consumer drives to last longer than they would due to less temperature
fluctuations.
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