在开始操作前，请先确定服务器是否有配RAID，有无raid操作方法是有区别的哦。
1，有RAID的情况
通过对应的RAID管理（监控）工具查看。
例如，LSI的MegaCli：
复制代码 代码示例:
# /opt/MegaCli -PDList -aALL
Adapter #0
Enclosure Device ID: 8
Slot Number: 0
Device Id: 0
Sequence Number: 2
Media Error Count: 0
Other Error Count: 0
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
Raw Size: 140014MB [0x11177328 Sectors]
Non Coerced Size: 139502MB [0x11077328 Sectors]
Coerced Size: 139392MB [0x11040000 Sectors]
Firmware state: Online
SAS Address(0): 0x5000c5000506c469
SAS Address(1): 0x0
Connected Port Number: 0
Inquiry Data: SEAGATE ST3146855SS S5133LN1FB9Q
Enclosure Device ID: 8
Slot Number: 1
Device Id: 1
Sequence Number: 2
Media Error Count: 0
Other Error Count: 0
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
Raw Size: 140014MB [0x11177328 Sectors]
Non Coerced Size: 139502MB [0x11077328 Sectors]
Coerced Size: 139392MB [0x11040000 Sectors]
Firmware state: Online
SAS Address(0): 0x5000c50005071371
SAS Address(1): 0x0
Connected Port Number: 1
Inquiry Data: SEAGATE ST3146855SS S5133LN1F4N6
Enclosure Device ID: 8
Slot Number: 2
Device Id: 2
Sequence Number: 2
Media Error Count: 0
Other Error Count: 0
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
Raw Size: 140014MB [0x11177328 Sectors]
Non Coerced Size: 139502MB [0x11077328 Sectors]
Coerced Size: 139392MB [0x11040000 Sectors]
Firmware state: Online
SAS Address(0): 0x5000c5000506b351
SAS Address(1): 0x0
Connected Port Number: 2
Inquiry Data: SEAGATE ST3146855SS S5133LN1FC40
Enclosure Device ID: 8
Slot Number: 3
Device Id: 3
Sequence Number: 2
Media Error Count: 0
Other Error Count: 0
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
Raw Size: 140014MB [0x11177328 Sectors]
Non Coerced Size: 139502MB [0x11077328 Sectors]
Coerced Size: 139392MB [0x11040000 Sectors]
Firmware state: Online
SAS Address(0): 0x5000c5000506cc01
SAS Address(1): 0x0
Connected Port Number: 3
Inquiry Data: SEAGATE ST3146855SS S5133LN1FBKX
一共有4块物理硬盘，型号均为SEAGATE ST3146855SS（希捷）。
2，没有RAID的情况
通过hdpalinuxjishu/13981.html target=_blank class=infotextkey>rm命令查看即可，步骤如下：
1、通过fdisk -l列出物理硬盘的设备名称
复制代码 代码示例:
# fdisk -l
Disk /dev/hda: 160.0 GB, 160040803840 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 1 25 200781 83 Linux
/dev/hda2 26 1069 8385930 83 Linux
/dev/hda3 1070 2113 8385930 83 Linux
/dev/hda4 2114 19457 139315680 5 Extended
/dev/hda5 2114 3157 8385898+ 83 Linux
/dev/hda6 3158 3418 2096451 82 Linux swap
/dev/hda7 3419 19457 128833236 83 Linux
Disk /dev/hdd: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hdd1 1 19457 156288321 83 Linux
共两块硬盘：/dev/hda、/dev/hdd。
2、通过hdparm命令查看指定硬盘的型号
复制代码 代码示例:
# hdparm -i /dev/hda
/dev/hda:
Model=WDC WD1600BB-22GUC0, FwRev=08.02D08, SerialNo=WD-WMAL94830149
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
RawCHS=16383/16/63, TrkSize=57600, SectSize=600, ECCbytes=74
BuffType=DualPortCache, BuffSize=2048kB, 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 udma3 udma4 *udma5
AdvancedPM=no WriteCache=enabled
Drive conforms to: device does not report version:
* signifies the current active mode
# hdparm -i /dev/hdd
/dev/hdd:
Model=WDC WD1600BB-00DWA0, FwRev=15.05R15, SerialNo=WD-WMAEK1512278
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
RawCHS=16383/16/63, TrkSize=57600, SectSize=600, ECCbytes=74
BuffType=DualPortCache, BuffSize=2048kB, 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 udma3 udma4 *udma5
AdvancedPM=no WriteCache=enabled
Drive conforms to: device does not report version:
* signifies the current active mode
/dev/hda的型号为WDC WD1600BB-22GUC0（西数），/dev/hdd的型号为WDC WD1600BB-00DWA0（西数）。
注意：如果服务器有配RAID，用hdparm查看硬盘信息时就会报错：
复制代码 代码示例:
# hdparm -i /dev/sda
/dev/sda:
HDIO_GET_IDENTITY failed: Invalid argument
