SCSI Controller

Crosstrack16 · 05-27-2003, 05:19 PM

Is the LSI - U160 any good? or should i opt. for Adaptec?

jtroutma · 05-28-2003, 01:24 PM

Do you have a modle number for that LSI controller? Maybe even a marketing name?

I currently am using the LSI Express 500 single channel RAID adapter w/ a 128MB cache and I love it. Vast improvement over my Adaptec 2940U2W adapter.

If you could post some more details, I could give you a recomendation.

Crosstrack16 · 05-28-2003, 02:27 PM

Sorry, its the LSI20160, link here .

Joe · 05-28-2003, 10:27 PM

LSI isnt too bad. unfortunately I am writing this at work where a cluster based on 2 LSI RAID controlers has just failed baddly. hehehe

jtroutma · 05-29-2003, 01:37 AM

Looks good enough for me. What are you planning on running on this card if you get it?

Joe, sorry to hear about your missfortunes

Crosstrack16 · 05-29-2003, 12:00 PM

2 18Gb 15000rpm drives, U160

phreenet · 05-29-2003, 12:18 PM

I have the single channel LSI U160 card, got it from googlegear.com for under $60 I believe it was. Its a damn good card from what I have seen. I run it under a Linux Kernel with two 36GB Seagates (10Ks). If you want to see some performance numbers I have taken you can see that here -> Disk Performance

Crosstrack16 · 05-29-2003, 03:57 PM

Phreenet, With two drives on a single channel, do u get the full 160Mbps or 80Mbps per drive?

jtroutma · 05-30-2003, 02:17 AM

When refering to the speed of the card, that is the MAXIMUM data transfer possible on a single chain at any one time. Hence both drives will have 160MBps available to both of them at any given time but if one drive is using up 50MBps, then the other one has only 110MBps for its operations.

I am guessing that you are going to be using Cheetah 15K.3 drives and if that is the case, you dont have to worry about your SCSI chain being the bottleneck. 15K.3 drives can put out between 45MBps - 75MBps streaming data each so you are within your chain limits. However, if you get that card, you will be limited by your PCI bus only able to deliver 133MBps at any one time.

Bottom line: it should work nicely.

Crosstrack16 · 05-30-2003, 09:47 AM

Thanks guys!! you answered all my questions

05-27-2003, 05:19 PM	#1
Crosstrack16 Cooling Savant Join Date: Jun 2001 Location: Spring Hill, FL Posts: 169	SCSI Controller Is the LSI - U160 any good? or should i opt. for Adaptec?

05-28-2003, 01:24 PM	#2
jtroutma Cooling Savant Join Date: Aug 2001 Location: SLO, CA Posts: 837	Do you have a modle number for that LSI controller? Maybe even a marketing name? I currently am using the LSI Express 500 single channel RAID adapter w/ a 128MB cache and I love it. Vast improvement over my Adaptec 2940U2W adapter. If you could post some more details, I could give you a recomendation. __________________ Athlon64 X2 4200+ @ 2.5Ghz (250FSB x 10) OCZ VX 1GB 4000 @ 250FSB (6-2-2-2 timmings) DFI LANParty nForce4 Ultra-D SCSI Raid 5 x (3) Cheetah 15K HDDs LSI Express 500 (128MB cache) OCZ PowerStream 520W PSU ATI X850XT PE (Stock) DTEK WhiteWater + DTEK Custom Radiator Eheim 1250

05-28-2003, 10:27 PM	#4
Joe The Pro/Life Support System Join Date: Dec 1999 Location: Denver, CO Posts: 4,041	LSI isnt too bad. unfortunately I am writing this at work where a cluster based on 2 LSI RAID controlers has just failed baddly. hehehe __________________ Joe - I only take this hat off for one thing... ProCooling archive curator and dusty skeleton.

05-29-2003, 01:37 AM	#5
jtroutma Cooling Savant Join Date: Aug 2001 Location: SLO, CA Posts: 837	Looks good enough for me. What are you planning on running on this card if you get it? Joe, sorry to hear about your missfortunes __________________ Athlon64 X2 4200+ @ 2.5Ghz (250FSB x 10) OCZ VX 1GB 4000 @ 250FSB (6-2-2-2 timmings) DFI LANParty nForce4 Ultra-D SCSI Raid 5 x (3) Cheetah 15K HDDs LSI Express 500 (128MB cache) OCZ PowerStream 520W PSU ATI X850XT PE (Stock) DTEK WhiteWater + DTEK Custom Radiator Eheim 1250

05-29-2003, 12:18 PM	#7
phreenet Cooling Savant Join Date: Feb 2001 Location: Gloucester, Virginia Posts: 356	I have the single channel LSI U160 card, got it from googlegear.com for under $60 I believe it was. Its a damn good card from what I have seen. I run it under a Linux Kernel with two 36GB Seagates (10Ks). If you want to see some performance numbers I have taken you can see that here -> Disk Performance __________________ Dual Pentium!!! 933@1107 Liquid Cooled.

05-28-2003, 02:27 PM	#3
Crosstrack16 Cooling Savant Join Date: Jun 2001 Location: Spring Hill, FL Posts: 169	Sorry, its the LSI20160, link here .

05-29-2003, 12:00 PM	#6
Crosstrack16 Cooling Savant Join Date: Jun 2001 Location: Spring Hill, FL Posts: 169	2 18Gb 15000rpm drives, U160

05-29-2003, 03:57 PM	#8
Crosstrack16 Cooling Savant Join Date: Jun 2001 Location: Spring Hill, FL Posts: 169	Phreenet, With two drives on a single channel, do u get the full 160Mbps or 80Mbps per drive?

05-30-2003, 02:17 AM	#9
jtroutma Cooling Savant Join Date: Aug 2001 Location: SLO, CA Posts: 837	When refering to the speed of the card, that is the MAXIMUM data transfer possible on a single chain at any one time. Hence both drives will have 160MBps available to both of them at any given time but if one drive is using up 50MBps, then the other one has only 110MBps for its operations. I am guessing that you are going to be using Cheetah 15K.3 drives and if that is the case, you dont have to worry about your SCSI chain being the bottleneck. 15K.3 drives can put out between 45MBps - 75MBps streaming data each so you are within your chain limits. However, if you get that card, you will be limited by your PCI bus only able to deliver 133MBps at any one time. Bottom line: it should work nicely. __________________ Athlon64 X2 4200+ @ 2.5Ghz (250FSB x 10) OCZ VX 1GB 4000 @ 250FSB (6-2-2-2 timmings) DFI LANParty nForce4 Ultra-D SCSI Raid 5 x (3) Cheetah 15K HDDs LSI Express 500 (128MB cache) OCZ PowerStream 520W PSU ATI X850XT PE (Stock) DTEK WhiteWater + DTEK Custom Radiator Eheim 1250

05-30-2003, 09:47 AM	#10
Crosstrack16 Cooling Savant Join Date: Jun 2001 Location: Spring Hill, FL Posts: 169	Thanks guys!! you answered all my questions

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