Sas v U320 scsi advice required

[s3ds]

Sas v U320 scsi advice required

I am building a new PC for use with a 3D modeling system that constantly access 10,000 to 60,000+ files(read/write)

In the past i have used a single scsi drives with a scsi controller ( last one was u160 ) on a 32 bit PCI bus to gain full duplex

After a some research i am not sure if a Sas controller on a PCI / PCI-X / PCI-E would give much more performance than a U320 on a PCI / PCI-X / PCI-E U320 controller.
I am not even sure that with a single drive, a PCI-X or PCI-E would give me much more than a 32 bit PCI

I would be using the fastest drive i can get, but only one .

I would appreciate any thoughts on this


Regards Paul

[aidanjt]

Well a 15,000 RPM disk would be reaching 32bit PCI saturation point. And SCSI has given way for SAS, so a PCIe SAS controller will give you some measure of future proofing if you want to add another disk later.

[s3ds]

Thank You for your reply

Future proofing is not an issue, backups/archiving would be done with a none scsi/sas drive and when its time to update (2-3 years) I will buy all new parts again.
Sas is slightly more expensive a.t.m than u320 but with a single drive i am not sure there would be much of a performance increase.
I came to a similar conclusion with the 15,000 RPM drives with a 32bit PCI so a PCI-X or PCI-E would be a better choice.

Regards Paul