[mythtv-users] Re: Hard Drives that Actually Work?
Steve Christall
mythtv at mctubster.com
Tue Dec 14 21:43:12 UTC 2004
CrAzY mAD wrote:
>As jra at baylink pointed out, no IDE personal
>computer drive, from any manufacture, is designed to
>run 24x7x365.
>According to Seagate, a PS (personal storage) drive is
>only designed to be on for 8 hours a day, 300 days a
>year. This equates to 2,400 hours a year. A ES
>(enterprise storage) drive runs 8,760 hours on a
>24x7x365 schedule. Those additonal hours increased
>the failure rate almost two-fold! "Past work
>comparing the reliability of PS against ES drives
>reported a filure rate of 25% for 24 IDE drives
>against 2% for 368 SCSI drives over an 18 month
>period. However, these numbers cannot be treated as a
>controlled sutdy due to the very small smaple size for
>the PS drives." ~ Seagate whitepaper
>
>There's a very interesting read on this in a Seagate
>whitepaper
>(http://www.seagate.com/content/docs/pdf/whitepaper/D2c_More_than_Interface_ATA_vs_SCSI_042003.pdf)
>
>
>
An interesting read, however consider these two points
1 / I have been told by two large storage vendors that they "cherry
pick" the best SATA drives for their Enterprise Disk Arrays. You can
read this in various ways, I take it to mean that while hard-drives past
testing to be sold, they are not all equal (similar to testing and speed
rating CPU's)
2 / Hard drives are so reliable now, that even if running a drive
designed for personal usage in server based loads, the use of hardware
based RAID (Redundant Array of Inexpensive Disks) with online spares /
auto rebuild etc approach this risk toward zero. One should be far more
worried about software bugs and operator error than the hardware!
Oh, and always keep off-site backups
Steve
More information about the mythtv-users
mailing list