Hi guys,

 

Looking for some ideas please. I've got a brand new HP Proliant NL36 with a brand new 2TB Seagate drive as the parity and an older (with data on it) 1TB wester digital. I've formatted the 1TB through unraid (I am using 4.7) and started a parity-sync. However the speed is very slow:

 

Total size: 	1,953,514,552 	KB
Current position: 	429,335,360 	(21.9%)
Estimated speed: 	11,701 	KB/sec
Estimated finish: 	2170.6 	minutes

 

The syslog seems okay to me, but I've attached it for some expert eyes.

 

Thanks in advance

 

syslog.txt

Hi guys,

 

Looking for some ideas please. I've got a brand new HP Proliant NL36 with a brand new 2TB Seagate drive as the parity and an older (with data on it) 1TB wester digital. I've formatted the 1TB through unraid (I am using 4.7) and started a parity-sync. However the speed is very slow:

 

Total size: 	1,953,514,552 	KB
Current position: 	429,335,360 	(21.9%)
Estimated speed: 	11,701 	KB/sec
Estimated finish: 	2170.6 	minutes

 

The syslog seems okay to me, but I've attached it for some expert eyes.

 

Thanks in advance

 

 

Almost looks like you are on a PCI bus.

Apologies you're right. I didn't think it would be that slow though.

PCI for new SATA drives = only one drive on the entire bus. after that it is get... well... s...l....o...w.

Thanks for the replies, I've read up on this but I'm getting more confused. The NL36 has 4 bays for hard disks, which have the SATA interface. Is the problem that although the interface is SATA, it is feeding a PCI bus which is then getting saturated and can't handle the data? Anyway around this? I'm pretty sure the motherboard has an additional 2 PCI slots, would it benefit if I expanded those with additional SATA ports and run 1 drive off each?

 

I would have thought other NL36 owners would be getting more than this?

 

Cheers.

Ok I'm lost.

 

if you are on the default Sata ports, you should be ok.

 

the sata port to the DVD bay is  nerfed at half speed and you need a hacked BIOs to use that one..

 

there is something else wrong then. is your bios current?

 

Thanks for the replies, I've read up on this but I'm getting more confused. The NL36 has 4 bays for hard disks, which have the SATA interface. Is the problem that although the interface is SATA, it is feeding a PCI bus which is then getting saturated and can't handle the data? Anyway around this? I'm pretty sure the motherboard has an additional 2 PCI slots, would it benefit if I expanded those with additional SATA ports and run 1 drive off each?

 

I would have thought other NL36 owners would be getting more than this?

 

Cheers.

PCI bus can handle 133MB/s.  A single disk can be read at somewhere between 60 and 100 MB/s.  Two disks being read at the same time will saturate a PCI bus.