WDC AC1425F

400MiB v tedle kombinaci disk, deska, jadro umi jen 16bitovy rezim... mozna je to jen diskem (je uz hodne starsi ;)

fw:~# hdparm -acdmIig /dev/hda

/dev/hda:
 multcount    = 16 (on)
 I/O support  =  0 (default 16-bit)
 using_dma    =  0 (off)
 readahead    =  8 (on)
 geometry     = 413/32/63, sectors = 833616, start = 0

 Model=WDC AC1425F, FwRev=27.25C38, SerialNo=WD-WT3050473141
 Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
 RawCHS=827/16/63, TrkSize=57600, SectSize=600, ECCbytes=4
 BuffType=DualPortCache, BuffSize=64kB, MaxMultSect=16, MultSect=16
 CurCHS=827/16/63, CurSects=833616, LBA=yes, LBAsects=833616
 IORDY=on/off, tPIO={min:380,w/IORDY:180}, tDMA={min:150,rec:150}
 PIO modes: pio0 pio1 pio3
 DMA modes: mdma0 *mdma1
 AdvancedPM=no


non-removable ATA device, with non-removable media
        Model Number:           WDC AC1425F
        Serial Number:          WD-WT3050473141
        Firmware Revision:      27.25C38
Standards:
        Likely used: 2
Configuration:
        Logical         max     current
        cylinders       827     827
        heads           16      16
        sectors/track   63      63
        bytes/track:    57600           (obsolete)
        bytes/sector:   600             (obsolete)
        current sector capacity: 833616
        LBA user addressable sectors = 833616
Capabilities:
        LBA, IORDY(can be disabled)
        Buffer size: 64.0kB     ECC bytes: 4
        Standby timer values: spec'd by standard
        r/w multiple sector transfer: Max = 16  Current = 16
        DMA: mdma0 *mdma1
             Cycle time: min=150ns recommended=150ns
        PIO: pio0 pio1 pio2 pio3
             Cycle time: no flow control=380ns  IORDY flow control=180ns
fw:~# hdparm -ft /dev/hda

/dev/hda:
 Timing buffered disk reads:  64 MB in 19.43 seconds =  3.29 MB/sec
fw:~# hdparm -fT /dev/hda

/dev/hda:
 Timing buffer-cache reads:   128 MB in 10.94 seconds = 11.70 MB/sec

pri pridavani zaznamu nezapomente na ty opravdu zajimave vlastnosti disku:

• pocet korekcnich bytu (polozka ECC)
• MaxMultSect (a s tim i velikost cache)
• prenosove rychlosti, ale s tim i nastaveni disku pri testovani MultSect, 16 vs. 32bitovy rezim cteni nebo i zapisu, dma vs. pio tedy hodnota u ktere je hvezdicka u dma nebo pio, (pokud jich je vice, tak radsi cely radek i s tim otaznickem ;) a nastaveni casovani.

zjednodusene sem proste pridejte vypisy:

• hdparm -acdmIig /dev/neco
• hdparm -ft /dev/neco
• hdparm -fT /dev/neco