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SCSI help Pls!

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  • Hard Drives
  • SCSI
  • Storage
Last response: in Storage
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March 7, 2005 4:38:31 PM

Hi guys been lookin through some old threads. So I'm getting to the point where I almost know what I DON'T know ;) 

The scsi drive I'm looking at is a 15k U320 (single drive, no RAID). The purpose is for gaming (faster load times etc in games). Now the cards for U320 seem too expensive. Further, past threads seem to indicate a U320 isn't neccassary cuz the PCI bus can't handle the speeds.

I see U160 and U2W cards mentioned? Basically, what card do I need? What kinda improvement can I expect. Other than the drive itself and the card what else am I gonna need (a special cable I assume).

This is for the rig in my sig,

EDIT: This is the best article I've found. What do think ? <A HREF="http://www.pcnineoneone.com/howto/scsi1.html" target="_new">http://www.pcnineoneone.com/howto/scsi1.html&lt;/A>

IIRC, IDE does 50MB/sec. U2w does 80 MB/sec. The u320 would do 160 MB/sec but is limited by the pci bus to 133 MB/sec. Is that right ?

Thanks

Mobile XP 2600+ (11X215)
Abit NF7-S v 2.0
Maxtor 60GB ATA 133 7200RPM
512MB Corsair Twinx 3200LL
BBA 9800 Pro
Enermax Noisetaker 420 watts
Win2K sp4<P ID="edit"><FONT SIZE=-1><EM>Edited by Coyote on 03/07/05 01:56 PM.</EM></FONT></P>

More about : scsi pls

March 7, 2005 6:11:41 PM

Other notes/questions

Drive model # is ST318453LC

Drive is 80pin. Most, if not all cards appear to be 64 pin. Is there an adapter etc?

dam, this scsi stuf is thick with terminology new to me. having probs finding good articles etc.

Thanks for any help.


Mobile XP 2600+ (11X215)
Abit NF7-S v 2.0
Maxtor 60GB ATA 133 7200RPM
512MB Corsair Twinx 3200LL
BBA 9800 Pro
Enermax Noisetaker 420 watts
Win2K sp4
March 7, 2005 6:12:26 PM

IDE = ATA = SATA/PATA speeds of up to 150mbps

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March 7, 2005 11:27:34 PM

80pin scsi drives are for hotswappable cages.
Unless you plan on having a big hotswappable storage array or something you will need 68pin drives (there are adaptors but the 68pin drives are usually cheaper anyway so why not just it to begin with).

That card would probably work but if you want good performance I would pay a little more and get something decent. SCSI is NOT cheap and you get what you pay for. If you arn't ready and willing to shell out many hundreds of dollars don't get scsi. Especially when you are only going to have one drive. For the price of one 15krpm scsi drive you could have a whole array of 10krpm sata raptor drives that will be a hell of a lot faster.

<A HREF="http://www.folken.net/myrig.htm" target="_new">My precious...</A>
March 7, 2005 11:43:27 PM

I thought 80-pin was just wide for greater bandwidth.
SCSI is ideal for high input/output like for file servers.

You can get great speed, thouroughput and economy with SCSI if you by refurb/used parts since many corp retire components at 3 years when they have a 5 year warranty.

<pre><font color=red>°¤o,¸¸¸,o¤°`°¤o \\// o¤°`°¤o,¸¸¸,o¤°
And the sign says "You got to have a membership card to get inside" Huh
So I got me a pen and paper And I made up my own little sign</pre><p></font color=red>
March 8, 2005 3:31:44 AM

Thanks guys!

I'm bailing on the scsi idea. Wrong mobo, maybe wrong concept for my purpose etc. I'll look elsewhere for my purpose.

BTW, from what tell after waaaay too many hrs reading up on this stuff, the 80 pin has the xtra pins to provide power, no need for another for another connector (power). Purpose is for "hot swapping" from what I can tell. NO additional performance to 80 pin over 68 pin.

Thanks again,

Coyote

Mobile XP 2600+ (11X215)
Abit NF7-S v 2.0
Maxtor 60GB ATA 133 7200RPM
512MB Corsair Twinx 3200LL
BBA 9800 Pro
Enermax Noisetaker 420 watts
Win2K sp4
March 8, 2005 4:03:04 AM

yea, stick to raptors. they are much more economical for about the same speed.

<A HREF="http://www.folken.net/myrig.htm" target="_new">My precious...</A>
March 10, 2005 6:04:11 AM

No. Standard SCSI drives have jumpers to configure things such as termination power and drive number. SCA drives (80-pin) simply move the jumpers to the interface, so that drive number can be selected on a rack. That way, when you're swapping out drives, you can just toss in a new drive without having to configure any jumpers.

80-pin drives use 68-pin cables.

<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>
March 10, 2005 6:07:17 AM

U2W cards are cheap now (especially used ones), U3W cards aren't too badly priced, the reason to get a new 15k SCSI drive is for the decreased seek times.

And SCSI CAN be a reasonably priced performance solution if you rely on buying used drives! Lots of drives that come with 5-year warranties are swapped out at 3 years, putting them on the market cheap.

What was said about 68-pin being cheaper, the opposite is true with used drives. Nobody wants to be forced into using SCA adapters on their PC, so the demand for used 80-pin drives is extremely low, while the supply is extremely high.

<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>
March 10, 2005 9:27:48 AM

Sounds similar to what I said...

I have observed that workstations with ECC memeory, and SCSI drives have less system crashes and more uptime than non ECC PATA/SATA PC's.

<pre><font color=red>°¤o,¸¸¸,o¤°`°¤o \\// o¤°`°¤o,¸¸¸,o¤°
And the sign says "You got to have a membership card to get inside" Huh
So I got me a pen and paper And I made up my own little sign</pre><p></font color=red>
March 10, 2005 2:54:23 PM

Quote:
the scsi drive I'm looking at is a 15k U320 (single drive, no RAID). The purpose is for gaming

If you go to storagereview and look at the performance database gaming benchmark you can see only a handfull of SCSI drives outperform a WD740GD
<pre>Manufacturer Model Size Interface Game BM Price
Fujitsu MAU3147NP 147GB Ultra320 909 $935
Maxtor 8E147L0 147GB Ultra320 899 $1325
Maxtor 8C073L0 73GB Ultra320 791 $440
Seagate ST3146754LW 147GB Ultra320 788 $469
Fujitsu MAS3735 73GB Ultra320 766 $320
Maxtor 8D300L0 300GB Ultra320 762 $1300
Western Digital WD740GD 74GB SATA 739 $174
</pre><p>Even if you went with the cheapest SCSI solution, the MAS3735 it's hard to see how you can justify spending and extra $146 + controller for a benchmark improvement of 4% which you probably won't even notice. That's why Raptors are so popular, they offer SCSI-comparable performance in a desktop compatible format for a reasonable price.
March 10, 2005 5:08:43 PM

Hey guys,

I'm off the scsi thing.

Check out my RAID O posts pls.

Thnaks,

Mobile XP 2600+ (11X215)
Abit NF7-S v 2.0
Maxtor 60GB ATA 133 7200RPM
512MB Corsair Twinx 3200LL
BBA 9800 Pro
Enermax Noisetaker 420 watts
Win2K sp4
!