Smart Array 6402 Performance... Normal

I've almost got my server ready to get shipped out to colo.

Its a HP Proliant ML570 G2, 4x2.0GHz Xeon, 4GB PC1600 DDR ECC RAM, and a Smart Array 6402 Ultra320 SCSI RAID controller card. The way I currently have the HDs configured is as follows:

Channel 1:
1x36.4GB 15k Ultra320
1x73.5GB 10k Ultra320

Channel 2:
1x36.4GB 15k Ultra320
1x73.5GB 10k Ultra320

I will add one-two more 73.5GB 10k Ultra320 drives for running in RAID 5 or 6.

The 2 36.4GB 15k Ultra320 drives are running in RAID 1. This is the array that I am performing these tests on, -not- the 73.5GB drives.

Anyway, I was a little curious about my performance.

The following tsets

I know hdparm is not really meant for running tests on SCSI disks, however here is the output:

Code:
# hdparm -tT /dev/cciss/c0d1

/dev/cciss/c0d1:
Timing cached reads: 1732 MB in 2.00 seconds = 865.91 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl for device
Timing buffered disk reads: 320 MB in 3.01 seconds = 106.45 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl for device
Here is the IOZone output:

Code:
File size set to 4096 KB
Command line used: /opt/iozone/bin/iozone -s 4096
Output is in Kbytes/sec
Time Resolution = 0.000001 seconds.
Processor cache size set to 1024 Kbytes.
Processor cache line size set to 32 bytes.
File stride size set to 17 * record size.
random random bkwd record stride
KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread
4096 4 188852 523178 658943 688853 610887 484275 572466 539010 580498 182914 471075 644937 671916
Then, just for the heck of it, I ran the tests on my little home Dell server with a ~80GB 7.2k RPM 1.5GB/s SATA drive:

Code:
/dev/sda:
Timing cached reads: 1680 MB in 2.00 seconds = 839.29 MB/sec
Timing buffered disk reads: 136 MB in 3.02 seconds = 45.08 MB/sec

Code:
File size set to 4096 KB
Command line used: ./iozone -s 4096
Output is in Kbytes/sec
Time Resolution = 0.000001 seconds.
Processor cache size set to 1024 Kbytes.
Processor cache line size set to 32 bytes.
File stride size set to 17 * record size.
random random bkwd record stride
KB reclen write rewrite read reread read write read rewrite read fwrite frewrite fread freread
4096 4 152972 1135245 1358510 2132128 1163636 1103448 1184499 1829350 1588205 490774 1006882 1378196 2104830
Can you give me a little insight on my results?

NOTE: The batteries on my Smart Array 6402 controller are DEAD and need to be replaced, they will not charge. Since they are dead, the cache (which is 128MB) will not enable itself. If this cache were enabled, would I experience much different results from the tests?