I just tested my Dell 6/IR in FreeNAS. It is recognized flawlessly. It also works with the IT firmware flashed on.
FreeNAS Version: 8.0.1 AMD64, i5, 8GB Ram
BootLog:
Code:
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
pcib1: <ACPI PCI-PCI bridge> irq 16 at device 1.0 on pci0
pci1: <ACPI PCI bus> on pcib1
mpt0: <LSILogic SAS/SATA Adapter> port 0xe000-0xe0ff mem 0xfb910000-0xfb913fff,0xfb900000-0xfb90ffff irq 16 at device 0.0 on pci1
mpt0: [ITHREAD]
mpt0: MPI Version=1.5.20.0
mpt0: Capabilities: ( RAID-0 RAID-1E RAID-1 )
mpt0: 0 Active Volumes (2 Max)
mpt0: 0 Hidden Drive Members (14 Max)
Here some stats with 5x 2TB WD Caviar Green with IR mode controller firmware (but raid disabled):
Write Speed: ~25GB ... 337.93023MB/s
Code:
[root@freenas] /mnt/tank/testset# time sh -c "dd if=/dev/zero of=ddfile_ bs=1m count=25000 && sync"
25000+0 records in
25000+0 records out
26214400000 bytes transferred in 73.979769 secs (354345524 bytes/sec)
0.008u 9.042s 1:20.99 11.1% 24+1376k 0+3io 0pf+0w
Read Speed: ~25GB ... 178.67942MB/s
Can someone tell me, why the reading speed is so much slower (this was the case when using onboard sata ports too)? How could I improve this?
Code:
[root@freenas] /mnt/tank/testset# time sh -c "dd of=/dev/null if=ddfile_ bs=1m count=25000 && sync"
25000+0 records in
25000+0 records out
26214400000 bytes transferred in 139.915389 secs (187358947 bytes/sec)
0.038u 7.549s 2:19.91 5.4% 26+1484k 0+3io 0pf+0w
Hope, I could help some of you with this information. :)
PS: If you want to enter the RAID Bios on a EFI board it may be useful to disable all boot devices in the efi and force bios mode (to give the initialisation of the controller bios enough time). Invoking the controller BIOS works using CTRL+C at the begin of the booting process.