[Aurora-sparc-user] 15,000 RPM SCSI drive in an Ultra 1

[Magnus]

On Thu, 2007-01-18 at 23:47 -0600, John Zbesko wrote:
> So, I have a pair of Compaq Proliant 36GB scsi drives I'm using in an
> Ultra 1, mostly because they're 36GB (and were surplus!) and not because
> they're 15,000 RPM. But I'm surprised that hdparm only reports 7.24
> MB/sec. Have I reached that unusual point where the CPU/controller, not
> HD is the bottleneck?!

The controller in an Ultra 1 is only good for 10MB/sec max.  Yes, it 
looks like you're bottlenecking there.

Additionally, as free as they were, I would not recommend using those 
drives in that chassis;  the Ultra 1 doesn't have sufficient cooling for 
those drives and they will fry themselves in short order.  15,000 RPM 
drives run very hot and normally require much more airflow than 10,000 
RPM drives.