Amar Nagi <amar@...> wrote: "Have you tried a RAID Set up ? " Amar: thanks for responding. No, I have not, but I need to get *this* system going, and I know it can do better....... It's been suggested that I should repartition my drives so that the individual drives are not split up into smaller partitions (currently they are 4 x 4gig each). I will try this when I get a moment. Also that I check that I am using the latest Apple drivers. Which I am, I think. Any other ideas anyone? Regards mdv ORIGINAL MESSAGE: >>> I've just installed a new LAM system, B+W G3 (400 mhz), 2x888, ATTO SCSI card, 4 x 16gig cheetah drives in a Glyph Hotswap >>> chassis. >>> Running a similar test to the above, laying out 64 *different* audio tracks, I am unable to get more than 28 mono tracks (26 >>> with cycle enabled) playing simultaneously before I get a "Disc-too-slow-or-fragmented" error message. My 9600-based system >>> does much better..... >>> DAE buffer is set to 2, other buffer settings appear to have little impact on this problem. >>> All four Cheetahs are attached to one of the ATTO ports. I know I'd probably be doing better to split them, but I'm thinking I >>> should be able to get better performance in this configuration - I've run 48+ tracks off one drive before - and I'd rather keep >>> it like this if possible. >>> All discs freshly defragmented and checked by Dr Norton.