The configuration is an Intel 2U with an Intel S5000PAL MB, Xeon 5110 Proc., 2 GB memory.
Intel SRC28X SATA RAID controller with 128 MB memory, no battery backup so the cache is write thru, no read ahead and direct I/O. Stripe size is 64k
3 Seagate ST3750640AS SATA HDD in RAID 5.
LSI PCI-X Ulrta 320 controller connected to and external 1U HP Ultrium 3 SCSI tape drive.
The original idea was to backup the three servers across the network using B2D during the night, then copy to tape during the day. When the throughput on B2D was a dismal 250-300 mb, we backed up directly to tape across the network and got throughput of up to 2 gb.
In device mgr., the RAID driver is the Intel driver provided by LSI and the array driver is Microsoft