SCSI daisy chain or seperate SCSI connections to adapter?

MJR · 03-24-2005, 06:11 PM

I've got internal SCSI CDROM, CDRW, and HDD with Adaptec AHA 2940U2W SCSI card which has 2, wide, 68-pin connections and one 50-pin connection. My devices are all wide, 68-pin.

My question(s) is/are: Should I connect HDD, CDROM, and CDRW to a 68-pin daisy chain connecting to only one of the 68-pin connectors on the SCSI card, or should I connect 2 devices to one connector, and another device to the other connector on the SCSI card using a seperate cable? Is there an advantage one way or the other? Which devices should connect to which cable, and in what order for optimal performance?

Thank you!

jesbax · 03-24-2005, 10:20 PM

you can daisy chain them all on one.

**Praetor** · 03-25-2005, 01:38 PM

Do realize the maximum rated speed is per chain

MJR · 03-25-2005, 04:21 PM

If the max. rated speed is per chain, then is the speed cut in half if an additional cable connection is used?

So, is it best to put them all on one chain, or should I connect them using seperate cables? Does it matter?

Anyone have an answer for me?

**Praetor** · 03-25-2005, 04:27 PM

Shouldnt matter unless you plan to SCSI chain up like 7 HDDs or soemthing

MJR · 03-25-2005, 04:33 PM

Thanks Praetor!!

I'm just going to hook them all up up to one cable then.

Need to purchase the correct cable.

03-24-2005, 06:11 PM	#1 (permalink)
MJR New Member Join Date: Mar 2005 Posts: 22	SCSI daisy chain or seperate SCSI connections to controller? I've got internal SCSI CDROM, CDRW, and HDD with Adaptec AHA 2940U2W SCSI card which has 2, wide, 68-pin connections and one 50-pin connection. My devices are all wide, 68-pin. My question(s) is/are: Should I connect HDD, CDROM, and CDRW to a 68-pin daisy chain connecting to only one of the 68-pin connectors on the SCSI card, or should I connect 2 devices to one connector, and another device to the other connector on the SCSI card using a seperate cable? Is there an advantage one way or the other? Which devices should connect to which cable, and in what order for optimal performance? Thank you! Last edited by MJR; 03-24-2005 at 06:29 PM. Reason: clarification

03-24-2005, 10:20 PM	#2 (permalink)
jesbax Gold Member Join Date: Sep 2004 Location: NE Age: 28 Posts: 337	you can daisy chain them all on one. __________________ my spelling sucks bad so bear with me. The Rig--(upgraded) amd athlon 64 x2 4800+ 4gb ram 300 gb hdd x2(raid) 80 gb hdd x2(raid) 52x cd-rw 16x dvd+rw dl ati Radeon 9550 256 mb

03-25-2005, 01:38 PM	#3 (permalink)
Praetor Administrator Join Date: Jul 2004 Location: Canada Age: 25 Posts: 19,951	Do realize the maximum rated speed is per chain __________________ ASUS P5K Premium WiFi-AP, Q6600@3.7 / ASUS P5ND, E6400@3.8 4GB OCz Platinum XTC 8500 / 4GB CorsairXMS2 6400 5x500GB Seagate 7200.10 / 2x500 Seagate 7200.10 OCz 8800GTX 768MB @ 630/800 / 2x Galaxy 8800GT SLI

03-25-2005, 04:21 PM	#4 (permalink)
MJR New Member Join Date: Mar 2005 Posts: 22	If the max. rated speed is per chain, then is the speed cut in half if an additional cable connection is used? So, is it best to put them all on one chain, or should I connect them using seperate cables? Does it matter? Anyone have an answer for me? Last edited by MJR; 03-25-2005 at 04:26 PM.

03-25-2005, 04:27 PM	#5 (permalink)
Praetor Administrator Join Date: Jul 2004 Location: Canada Age: 25 Posts: 19,951	Shouldnt matter unless you plan to SCSI chain up like 7 HDDs or soemthing __________________ ASUS P5K Premium WiFi-AP, Q6600@3.7 / ASUS P5ND, E6400@3.8 4GB OCz Platinum XTC 8500 / 4GB CorsairXMS2 6400 5x500GB Seagate 7200.10 / 2x500 Seagate 7200.10 OCz 8800GTX 768MB @ 630/800 / 2x Galaxy 8800GT SLI

03-25-2005, 04:33 PM	#6 (permalink)
MJR New Member Join Date: Mar 2005 Posts: 22	Thanks Praetor!! I'm just going to hook them all up up to one cable then. Need to purchase the correct cable.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode