MSA1000 big performance issue

[nias]

Hello,
i'm using a MSA1000 SAN with 4 * 10k 144GB U320 Disks in a Raid 0+1 config on a debian/sarge with custom 2.6.17.8 Kernel. System was a BL20pG2 Blade.

dmesg spits out:
QLogic Fibre Channel HBA Driver
ACPI: PCI Interrupt 0000:01:03.0 -> GSI 23 (level, low) -> IRQ 201
qla2300 0000:01:03.0: Found an ISP2312, irq 201, iobase 0xf8838000
qla2300 0000:01:03.0: Configuring PCI space...
qla2300 0000:01:03.0: Configure NVRAM parameters...
qla2300 0000:01:03.0: Verifying loaded RISC code...
qla2300 0000:01:03.0: Extended memory detected (512 KB)...
qla2300 0000:01:03.0: Resizing request queue depth (2048 -> 4096)...
qla2300 0000:01:03....

[James Muell]

You get what you pay for. The MSA1000 is not a high performance based Array. HP says optimimum disk configuration is using 7 or more disks. Array disks should be in slots 0-7 or 8-14. Preferably don't span across these sets if you are configuring for performance. I did testing and got similar results. SCSI will always out perform this array. Remember: the Contrlr is only 160mb/s. 15K drives would also help. Good luck