linux 下查看硬盘型号、大小等信息，机器有没有做Raid有关系

一、普通模式（该机硬盘没有做磁盘阵列）

1、fdisk -l 查看你的硬盘编号，如sda,sdb 等

2、smartctl --all /dev/sda

smartctl --all /dev/sda #该命令centos自带

[root@localhost ~]# smartctl --all /dev/sdasmartctl 5.43 2012-06-30 r3573 [x86_64-linux-2.6.32-504.el6.x86_64] (local build)Copyright (C) 2002-12 by Bruce Allen, http://smartmontools.sourceforge.net=== START OF INFORMATION SECTION ===Device Model:     SanDisk SD6SB1M128G1022ISerial Number:    141218410909LU WWN Device Id: 5 001b44 becdaed9dFirmware Version: X231600User Capacity:    128,035,676,160 bytes [128 GB]Sector Size:      512 bytes logical/physicalDevice is:        Not in smartctl database [for details use: -P showall]ATA Version is:   8ATA Standard is:  ATA-8-ACS revision 6Local Time is:    Fri Jan 16 08:35:48 2015 CSTSMART support is: Available - device has SMART capability.SMART support is: Enabled

从上面可以看出，硬盘型号为SanDisk SD6SB1M128G1022I，容量为128GB

二、磁盘阵列 RAID模式

如果该机有做磁盘阵列，那么运行上述命令会报错，得不到你要的磁盘信息。可以借助MegaCli命令

MegaCli命令系统不自带，需要额外下载，

下载地址：

http://www.lsi.com/downloads/Public/RAID%20Controllers/RAID%20Controllers%20Common%20Files/8.07.14_MegaCLI.zip

下载之后解压，

unzip CSA1.5-MegaCli_REL80571.zip

cd MegaCLI/MegaCli_Linux

rpm -ivh MegaCli-8.05.71-1.noarch.rpm

安装完成

ln -s /opt/MegaRAID/MegaCli/MegaCli64 /usr/bin/

默认安装在/opt下面，建立软链到/usr/bin

[root@localhost bin]# /opt/MegaRAID/MegaCli/MegaCli64 -PDlist -aALLAdapter #0Enclosure Device ID: 32Slot Number: 0Drive's position: DiskGroup: 0, Span: 0, Arm: 0Enclosure position: 1Device Id: 0WWN: 50000C0F02E57BE9Sequence Number: 2Media Error Count: 0Other Error Count: 0Predictive Failure Count: 0Last Predictive Failure Event Seq Number: 0PD Type: SASRaw Size: 279.396 GB [0x22ecb25c Sectors]Non Coerced Size: 278.896 GB [0x22dcb25c Sectors]Coerced Size: 278.875 GB [0x22dc0000 Sectors]Sector Size:  0Firmware state: Online, Spun UpDevice Firmware Level: D1S6Shield Counter: 0Successful diagnostics completion on :  N/ASAS Address(0): 0x50000c0f02e57beaSAS Address(1): 0x0Connected Port Number: 0(path0)Inquiry Data: WD      WD3001BKHG      D1S6WX11E83NU249FDE Capable: Not CapableFDE Enable: DisableSecured: UnsecuredLocked: UnlockedNeeds EKM Attention: NoForeign State: NoneDevice Speed: 6.0Gb/sLink Speed: 6.0Gb/sMedia Type: Hard Disk DeviceDrive Temperature :31C (87.80 F)PI Eligibility:  NoDrive is formatted for PI information:  NoPI: No PIPort-0 :Port status: ActivePort's Linkspeed: 6.0Gb/sPort-1 :Port status: ActivePort's Linkspeed: UnknownDrive has flagged a S.M.A.R.T alert : NoEnclosure Device ID: 32Slot Number: 1Drive's position: DiskGroup: 0, Span: 0, Arm: 1Enclosure position: 1Device Id: 1WWN: 50000C0F028F32EDSequence Number: 2Media Error Count: 0Other Error Count: 0Predictive Failure Count: 0Last Predictive Failure Event Seq Number: 0PD Type: SASRaw Size: 279.396 GB [0x22ecb25c Sectors]Non Coerced Size: 278.896 GB [0x22dcb25c Sectors]Coerced Size: 278.875 GB [0x22dc0000 Sectors]Sector Size:  0Firmware state: Online, Spun UpDevice Firmware Level: D1S6Shield Counter: 0Successful diagnostics completion on :  N/ASAS Address(0): 0x50000c0f028f32eeSAS Address(1): 0x0Connected Port Number: 1(path0)Inquiry Data: WD      WD3001BKHG      D1S6WX11E83VD242FDE Capable: Not CapableFDE Enable: DisableSecured: UnsecuredLocked: UnlockedNeeds EKM Attention: NoForeign State: NoneDevice Speed: 6.0Gb/sLink Speed: 6.0Gb/sMedia Type: Hard Disk DeviceDrive Temperature :31C (87.80 F)PI Eligibility:  NoDrive is formatted for PI information:  NoPI: No PIPort-0 :Port status: ActivePort's Linkspeed: 6.0Gb/sPort-1 :Port status: ActivePort's Linkspeed: UnknownDrive has flagged a S.M.A.R.T alert : NoEnclosure Device ID: 32Slot Number: 2Drive's position: DiskGroup: 0, Span: 0, Arm: 2Enclosure position: 1Device Id: 2WWN: 50000C0F02E5B8EDSequence Number: 2Media Error Count: 0Other Error Count: 0Predictive Failure Count: 0Last Predictive Failure Event Seq Number: 0PD Type: SASRaw Size: 279.396 GB [0x22ecb25c Sectors]Non Coerced Size: 278.896 GB [0x22dcb25c Sectors]Coerced Size: 278.875 GB [0x22dc0000 Sectors]Sector Size:  0Firmware state: Online, Spun UpDevice Firmware Level: D1S6Shield Counter: 0Successful diagnostics completion on :  N/ASAS Address(0): 0x50000c0f02e5b8eeSAS Address(1): 0x0Connected Port Number: 2(path0)Inquiry Data: WD      WD3001BKHG      D1S6WX11E83NU081FDE Capable: Not CapableFDE Enable: DisableSecured: UnsecuredLocked: UnlockedNeeds EKM Attention: NoForeign State: NoneDevice Speed: 6.0Gb/sLink Speed: 6.0Gb/sMedia Type: Hard Disk DeviceDrive Temperature :28C (82.40 F)PI Eligibility:  NoDrive is formatted for PI information:  NoPI: No PIPort-0 :Port status: ActivePort's Linkspeed: 6.0Gb/sPort-1 :Port status: ActivePort's Linkspeed: UnknownDrive has flagged a S.M.A.R.T alert : NoExit Code: 0x00

从上面可以看出，该机有三块硬盘，型号为，

WD      WD3001BKHG      D1S6WX11E83NU249，容量为300GB。

MegaCli常用参数介绍
MegaCli -adpCount 【显示适配器个数】
MegaCli -AdpGetTime –aALL 【显示适配器时间】
MegaCli -AdpAllInfo -aAll 【显示所有适配器信息】
MegaCli -LDInfo -LALL -aAll 【显示所有逻辑磁盘组信息】
MegaCli -PDList -aAll 【显示所有的物理信息】
MegaCli -AdpBbuCmd -GetBbuStatus -aALL |grep ‘Charger Status’ 【查看充电状态】
MegaCli -AdpBbuCmd -GetBbuStatus -aALL【显示BBU状态信息】
MegaCli -AdpBbuCmd -GetBbuCapacityInfo -aALL【显示BBU容量信息】
MegaCli -AdpBbuCmd -GetBbuDesignInfo -aALL 【显示BBU设计参数】
MegaCli -AdpBbuCmd -GetBbuProperties -aALL 【显示当前BBU属性】
MegaCli -cfgdsply -aALL 【显示Raid卡型号，Raid设置，Disk相关信息】

磁带状态的变化，从拔盘，到插盘的过程中。
Device |Normal|Damage|Rebuild|Normal
Virtual Drive |Optimal|Degraded|Degraded|Optimal
Physical Drive |Online|Failed –> Unconfigured|Rebuild|Online

linux 下查看硬盘型号、大小等信息（含Raid）