On Sunday 26 October 2003 15:45, Mario Giammarco wrote:

Hello,
I would like to buy new SCSI hard disk to be used with lsi 160
controller in 32 bit pci.

I can choose:

- RAID5 of three Maxtor Atlas 10K II 9gb
- RAID1 of two   Maxtro Atlas 10K III 18gb

My problem is: I have seen that RAID1 code does not interleave reads so
it does not improve performance very much putting two hard disks.

You only have to keep in mind that the RAID5 CPU overhead is larger than the 
one of RAID1.

My experience is that software RAID5 is quite slow.

		Best Regards,
		Hermann

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