Linux如何查看硬盘型号和缓存？方法：hdparm  -i /dev/sda1

hdparm  -i /dev/sda1

/dev/sda1:

Model=WDC WD10EACS-00ZJB0(硬盘型号)                   , FwRev=01.01B01, SerialNo=     WD-WCASJ0976997

Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }

RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=50

BuffType=unknown, BuffSize=16384kB(硬盘缓存), MaxMultSect=16, MultSect=?16?

CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455

IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}

PIO modes:  pio0 pio3 pio4

DMA modes:  mdma0 mdma1 mdma2

UDMA modes: udma0 udma1 udma2

AdvancedPM=no WriteCache=enabled

Drive conforms to: Unspecified:  ATA/ATAPI-1 ATA/ATAPI-2 ATA/ATAPI-3 ATA/ATAPI-4 ATA/ATAPI-5 ATA/ATAPI-6 ATA/ATAPI-7

* signifies the current active mode

[root@host96 ]# hdparm  -i /dev/sda1

/dev/sda1:

Model=Hitachi HDT721010SLA360                 , FwRev=ST6OA31B, SerialNo=      STF604MR2DG61P

Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }

RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=56

BuffType=DualPortCache, BuffSize=15001kB, MaxMultSect=16, MultSect=?16?

CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455

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

AdvancedPM=yes: disabled (255) WriteCache=enabled

Drive conforms to: unknown:  ATA/ATAPI-2 ATA/ATAPI-3 ATA/ATAPI-4 ATA/ATAPI-5 ATA/ATAPI-6 ATA/ATAPI-7

* signifies the current active mode

linux/centos系统的服务器如何用hdparm测试硬盘性能，测试硬盘速度？

[root@host88 ]# hdparm -tT /dev/sda8

/dev/sda8:

Timing cached reads:   8512 MB in  2.00 seconds = 4262.60 MB/sec

Timing buffered disk reads:  222 MB in  3.02 seconds =  73.58 MB/sec

[root@host96 ]# hdparm -tT /dev/sda2

/dev/sda2:

Timing cached reads:   7684 MB in  2.00 seconds = 3848.10 MB/sec

Timing buffered disk reads:  116 MB in  3.15 seconds =  36.82 MB/sec

注意，hdparm -tT 必须要在机器空闲的时候测试才准确，机器繁忙的时候是测不准的。如果有小于20MB/Sec的结果，那么磁盘的IO性能就不怎么样了。