John, Here is a deal from NewEgg or Buy.com that may make the discussion mute;
Seagate Barracuda 7200.11 500GB SATA 3.0Gb/s Hard Drive OEM
use PROMO CODE: EMCBCBCAG until 12/18/2008 $59.99
Item#:N82E16822148288
HITACHI Deskstar P7K500 HDP725050GLA360 (0A35415) 500GB 7200 RPM SATA
3.0Gb/s Hard Drive - OEM Item #: N82E16822145215 $59.99
If not, what kind of motherboard do you have make/model? It is the
combination of your northbridge, southbridge, and drive that really
determines if it will work. You may need to replace your motherboard
I know I have at least one of these combo drives(jumper+ed) running in
one of my raid setups. I set the jumper to SataII and off it went. I
currently use AMD-768, VT82C586A/B/VT82C686, SB600, and ICH9R(Intel) as
sata/ide controllers in my mainboards. I.E. These Work.
I've seen all the notes on this thread and it seems your original
question has been resolved, buffer size doesn't matter. Plus, the jobs
you run may need huge amounts of disk. The price on 500GB SataII 16Mb
drives is ridiculously low. Take you pick of manufacturers and buy
several and move on.
Note: Tell me/us which mainboard you have and capacity of your WD drive
and I'll look for closer for you. Worst case, if you want to use that
drive and it doesn't currently work with your mainboard -- you will need
a new mainboard or a new drive.
James,
On Fri, 2008-12-12 at 13:18 -0500, John McKelvey wrote:
> James,
>
> Many thanks for this very useful information!! With respect to the WD
> drives does this mean that they finally support Linux? I have a SATA
> 300 SE16 that is not yet installed because WD support says that WD
> does not support Linux, and with pins 5-6 jumpered it will only be a
> "150" drive. Do you have any further info on their Linux support?
>
> Best regards, and again, many thanks!
>
> John
>
> On Fri, Dec 12, 2008 at 1:09 AM, James Scott Jr <[email protected]>
> wrote:
> John,
>
> If what your really after is significantly higher performance
> and io
> throughput, consider 10K speed drives. The increased speed
> doesn't
> directly translate into increased noise.
>
> Look at the write, seeks, and latency times below. 10K speed
> drives
> with 16M buffers sit right in the middle of performance and
> price (lower
> is better on both points).
>
>
> $169.99 Western Digital VelociRaptor WD1500HLFS
> 150GB 10000 RPM SATA 3.0Gb/s Hard Drive (bare drive) - OEM
> * Cache: 16MB
> * Form Factor: 3.5"
> * Average Seek Time: 4.2ms
> * Average Write Time: 4.7ms
> * Average Latency: 5.5ms
> * Features: The 2.5" WD Veloci Raptor is enclosed in a
> 3.5"
> enterprise-class mounting frame.
> * Parts: 5 years limited
> * Labor: 5 years limited
> * Model #: WD1500HLFS
> * Item #: N82E16822136296
> *
>
> Versus a 7200 Speed 16M
> $54.99 Seagate Barracuda 7200.10 ST3250410AS 250GB 7200 RPM
> SATA 3.0Gb/s
> Hard Drive - OEM
>
> * Cache: 16MB
> * Form Factor: 3.5"
> * Average Seek Time: 8.5ms
> * Average Write Time: 10ms
> * Average Latency: 4.16ms
> * Model #: ST3250410AS
> * Item #: N82E16822148262
>
> $74.99 Seagate Barracuda ES.2 ST3250310NS 250GB 7200 RPM SATA
> 3.0Gb/s
> Hard Drive - OEM
> * Cache: 32MB
> * Form Factor: 3.5"
> * Average Seek Time: 8.5ms
> * Average Write Time: 9.5ms
> * Average Latency: 4.16ms
> * Model #: ST3250310NS
> * Item #: N82E16822148309
>
> $189 Fujitsu MBA3147NC 147GB 15000 RPM SCSI Ultra320 80pin
> Hard Drive -
> OEM
> * Cache: 8MB (16MB is $249.99, with no increase in
> metrics)
> * Form Factor: 3.5"
> * Average Seek Time: 3.4ms
> * Average Write Time: 3.9ms
> * Average Latency: 2ms
> * Model #: MBA3147NC
> * Item #: N82E16822116061
>
>
> Although hearing you say raid5, and reduced opportunity for
> data loss, I
> would say Large 16K/7200 SataII drives could be your best
> choice. (lots
> of them, as in 4+ drives (((NOT 3))))
>
> For more detailed info on the data transfer issue, look into
> the kernel
> docs for FileSystem Driver, or EXT3 Drivers.
>
> Here is a hdparam article that sheds some like on tuning
> opportunities -
> the real story:
> http://www.linuxdevcenter.com/pub/a/linux/2000/06/29/hdparm.html
>
> James,
>
>
>
>
> On Wed, 2008-12-10 at 09:43 -0500, John McKelvey wrote:
> > Folks,
> >
> > I want to add 3 identical hard drives under Raid 5. Am
> considering
> > Seagate SATA II server drives. One question is does it
> really make
> > much difference to use drives with 16Mbytes cache rather
> than 32Mbytes
> > cache?
> >
> > Thanks!
> >
> > John McKelvey
>
> > _______________________________________________
> > Fwlug mailing list
> > [email protected]
> >
> http://fortwaynelug.org/mailman/listinfo/fwlug_fortwaynelug.org
>
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