PLEXTOR PX-760A

/dev/hda:

-i

 Model=PLEXTOR DVDR PX-760A, FwRev=1.00, SerialNo=229130
 Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
 RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
 BuffType=unknown, BuffSize=0kB, MaxMultSect=0
 (maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio1 pio2 pio3 pio4 
 DMA modes:  mdma0 mdma1 mdma2 
 UDMA modes: udma0 udma1 udma2 udma3 *udma4 
 AdvancedPM=no
 Drive conforms to: Unspecified:  ATA/ATAPI-3 ATA/ATAPI-4 ATA/ATAPI-5 ATA/ATAPI-6

 * signifies the current active mode

-tT w/ Data Disc
/dev/hda:
 Timing cached reads:   2012 MB in  2.00 seconds = 1005.50 MB/sec
BLKFLSBUF failed: Function not implemented
 Timing buffered disk reads:   20 MB in  3.37 seconds =   5.94 MB/sec
BLKFLSBUF failed: Function not implemented

WD Raptor 36GB

sdparm -a /dev/sdd
    /dev/sdd: ATA       WDC WD360GD-00FN  35.0
Read write error recovery mode page:
  AWRE        1
  ARRE        1
  TB          0
  RC          0
  EER         0
  PER         0
  DTE         0
  DCR         0
  RRC         0
  COR_S       0
  HOC         0
  DSOC        0
  WRC         0
  RTL         0
Caching (SBC) mode page:
  IC          0
  ABPF        0
  CAP         0
  DISC        0
  SIZE        0
  WCE         1
  MF          0
  RCD         0
  DRRP        0
  WRP         0
  DPTL        0
  MIPF        0
  MAPF        0
  MAPFC       0
  FSW         0
  LBCSS       0
  DRA         0
  NV_DIS      0
  NCS         0
  CSS         0
Control mode page:
  TST         0
  TMF_ONLY    0
  D_SENSE     0
  GLTSD       1
  RLEC        0
  QAM         0
  QERR        0
  RAC         0
  UA_INTLCK   0
  SWP         0
  ATO         0
  TAS         0
  AUTOLOAD    0
  BTP        -1
  ESTCT      30

hdparm -Tt /dev/sdd:

 Timing cached reads:   1812 MB in  2.00 seconds = 905.56 MB/sec
 Timing buffered disk reads:   94 MB in  3.01 seconds =  31.25 MB/sec