I am building a new PC, and would like your opinion on what would be the faster option. Whatever disk layout I use I will be using an HP Smart Array P600 Controller http://h18004.www1.hp.com/products/quickspecs/12247_div/12247_div.html in this PC, connected to an available PCI express 4x slot. The options I have are:
20 x 72GB disks (10k) RAID 0, in an external enclosure, the communication to the disks is multiplexed down to a quad SATA (4 x 300MBs) external connector, with this option I fear running the 20 disks through only 4 SATA channels may be a bottleneck.
or
8 x 150GB disks (10k) RAID 0, internally to the PC, communication to each disk is via a dedicated 300MBs SATA connector, so there is no chance of bottlenecks. The raw SATA IO available in the internal option is 8 x 300MBs, so twice the external setup.
What option do you think will give me better performance, or it there not much in it?
20 x 72GB disks (10k) RAID 0, in an external enclosure, the communication to the disks is multiplexed down to a quad SATA (4 x 300MBs) external connector, with this option I fear running the 20 disks through only 4 SATA channels may be a bottleneck.
or
8 x 150GB disks (10k) RAID 0, internally to the PC, communication to each disk is via a dedicated 300MBs SATA connector, so there is no chance of bottlenecks. The raw SATA IO available in the internal option is 8 x 300MBs, so twice the external setup.
What option do you think will give me better performance, or it there not much in it?