Disk to Disk Transfer Speeds


mbc0

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Hi,

 

Wondering if anyone can help me with some transfer speeds as I am not sure things are running as quickly as they should?

 

I have tested by copying a 5GB file disk to disk using midnight commander & Krusader with the same results

 

5GB File -All start transferring at 500MB/s (Obviously writing to RAM) then gradually slow to 60MB/s 

 

The issue I have is that Disks 1-7 are all SATA3 Brand New Toshiba P300's and Diss 8-10 are 4 year old Samsung HD204UI's and if anything they are completing the 5GB transfer a few seconds faster!

 

The P300's & HD204UI are all on SATA2 & SATA3 ports (Mixed on-board & PCI-E SATA Controller Card & when checking the disk info the P300's are showing current 6GB Connection and the HD204UI's are showing current 3GB connection so curious as to know why the transfer rates are the same, surely the 7 brand new Toshiba P300's on a SATA3 connection should be a vast improvement?

 

I have attached my diagnostics file if any help.

 

Thanks in advance

 

 

 

 

unraidserver-diagnostics-20170925-2339.zip

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6 minutes ago, mbc0 said:

surely the 7 brand new Toshiba P300's on a SATA3 connection should be a vast improvement?

 

SATA2 vs SATA3 won't make a difference with HDDs, but speed should improve some if/when you also replace parity with a similar disk, current parity is WD green with similar speeds to the Samsungs, so you can't take advantage of the Toshibas higher speed.

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