January 14, 200917 yr I am building the parity right now for the first time, and I'm getting a speed of 16,500KB/sec, which from what I remember seeing in other posts seemed low. What speeds do you experience? How can I speed it up?
January 14, 200917 yr The speed is highly dependent on the number of disks in your array, and the hardware used. Are you all SATA drives? or IDE? or a mix? Are the drives all on a PCI bus, or PCI-Express? My parity calc speed, on my array, with a mix of 9 IDE and 2 SATA devices, on an older PCI bus based motherboard, is almost the same as yours. My parity check speed is roughly 16,912 KB/s to start, speeding up as it gets past the smaller drives. Since the initial parity calculation involves writing to the parity drive, it might be a tiny bit slower. Depending on your hardware configuration, you might be working exactly as expected. Describe your hardware, and disk configuration and then post your syslog (instructions in the wiki under trouble-shooting) ... It is the only way for us to help you more. Joe L.
January 14, 200917 yr Author That's true. I should have posted my system description. 5 drives, all SATA. 4x250GB drives attached to a Promise TX4 card, and one 500Gb drive attached to a VIA EPIA EN15000 Mobo. I'll post a syslog tonight.
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