[mythtv-users] SATA Drive Failure
trey at treysoft.com
Sat Jun 25 18:22:02 UTC 2005
On Sat, Jun 25, 2005 at 12:06:14PM +0100, Allan Stirling wrote:
> Here's the results from my array, which is a 8 disk RAID5, spread over 2
> SATA controllers on a PCI-X dual Xeon (yes, I believe overkill _is_ just
> a word):
Sweet setup. I don't believe you've reached overkill yet ;-)
> hdparm -Tt /dev/sda
> Timing cached reads: 2204 MB in 2.00 seconds = 1101.07 MB/sec
> Timing buffered disk reads: 374 MB in 3.01 seconds = 124.31 MB/sec
> The 'buffered disk reads' is the line you're looking for. And 124Mb /
> sec is quite good for this type of setup.
Neat! I didn't know you could run hdparm against non-[S]ATA devices.
I'd guess only these tests work, though.
Just for comparisons (3ware 8506, 4 Maxtor 7Y250M0s RAID5, dual
# hdparm -Tt /dev/sda
Timing cached reads: 1124 MB in 2.00 seconds = 560.96 MB/sec
Timing buffered disk reads: 478 MB in 3.00 seconds = 159.20 MB/sec
The wife has given me the go-ahead to build a new storage system (the
current 750GB array has topped out with HDTV programs, and I haven't
made a significant dent in the DVD library transfer process). I've
planned a dual Opteron 246 box with a 3Ware 9500S-12 PCI-X controller.
It has Online-Capacity-Expansion, so I can buy my favorite Maxtor
7Y250M0's a few at a time and keep the initial outlay down a bit.
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