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Re: SATA vs PATA



On Mon, Aug 27, 2007 at 01:30:53PM +0000, Douglas A. Tutty wrote:
   > 
   > SATA-I gives 150 MB/s, SATA-II gives 300 MB/s, PATA 133 MB/s.
   > 
How does one measure the speeds of these drives? For the PATA drives, I
used hdparm -tT /dev/hda to get the numbers. The sdparm utility does
not seem to have a testing mode.

Here are the details of my drive:

# sdparm --inquiry /dev/sda
    /dev/sda: ATA       ST3250310AS       3.AA
Device identification VPD page:
  Addressed logical unit:
    designator type: vendor specific [0x0],  code set: ASCII
 00     20 20 20 20 20 20 20 20  20 20 20 20 39 52 59 30   9RY0
 10     33 36 59 57                                        36YW            
    designator type: T10 vendor identification,  code set: ASCII
      vendor id: ATA     
      vendor specific: ST3250310AS                        9RY036YW

I tried the hdparm on my sata disk and got these figures.

# hdparm -tT /dev/sda

/dev/sda:
 Timing cached reads:   1498 MB in  2.00 seconds = 749.55 MB/sec
 Timing buffered disk reads:  244 MB in  3.01 seconds =  81.06 MB/sec

Regards,

-- 
Sridhar M.A.                                 GPG KeyID : F6A35935
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