Am I Really On A SATA

I rented a new server. I check WD6400AAKS, it's indeed a SATA drive. However, why is the label says hda and hdc? Isn't it supposed to be sda and sdc?

Is it true DMA is not needed for my SATA?

Is my disk performance to slow? Does the performance suggest it's a IDE disk?

Here is what on my WHM

hda: WDC WD6400AAKS-65A7B0, ATA DISK drive
hdc: WDC WD6400AAKS-65A7B0, ATA DISK drive
hda: max request size: 512KiB
hda: 1250263728 sectors (640135 MB) w/16384KiB Cache, CHS=65535/255/63
hda: cache flushes supported
hdc: max request size: 512KiB
hdc: 1250263728 sectors (640135 MB) w/16384KiB Cache, CHS=65535/255/63
hdc: cache flushes supported

root@abc [~]# hdparm /dev/hda

/dev/hda:
multcount = 16 (on)
IO_support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 0 (off)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 65535/255/63, sectors = 1250263728, start = 0
root@abc [~]# hdparm -Tt /dev/hda

/dev/hda:
Timing cached reads: 12040 MB in 1.99 seconds = 6036.46 MB/sec
Timing buffered disk reads: 24 MB in 3.20 seconds = 7.49 MB/sec