1.首先查看机器是否使用的是MegaRAID卡
dmesg | grep RAID [ 6.932741] scsi host0: Avago SAS based MegaRAID driver
2.添加 megaraid 源：
修改 /etc/apt/sources.list 在末尾添加
deb http://hwraid.le-vert.net/ubuntu precise main
然后执行：
apt-get update apt-get install megacli megactl megaraid-status
如果执行提示 GPG 错误，需要执行如下命令添加证书：
wget -O - http://hwraid.le-vert.net/debian/hwraid.le-vert.net.gpg.key | sudo apt-key add -
然后再次执行：
apt-get install megacli megactl megaraid-status
3.使用megacli命令进行一些简单的查询
<i>显示所有RAID级别、设置及逻辑盘信息
sudo megacli -LDInfo -Lall -aALL
输出
Adapter 0 -- Virtual Drive Information: Virtual Drive: 0 (Target Id: 0) Name : RAID Level : Primary-1, Secondary-0, RAID Level Qualifier-0 Size : 1.090 TB Sector Size : 512 Is VD emulated : No Mirror Data : 1.090 TB State : Optimal Strip Size : 64 KB Number Of Drives : 2 Span Depth : 1 Default Cache Policy: WriteBack, ReadAhead, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteBack, ReadAhead, Direct, No Write Cache if Bad BBU Default Access Policy: Read/Write Current Access Policy: Read/Write Disk Cache Policy : Disk's Default Encryption Type : None Default Power Savings Policy: Controller Defined Current Power Savings Policy: None Can spin up in 1 minute: Yes LD has drives that support T10 power conditions: Yes LD's IO profile supports MAX power savings with cached writes: No Bad Blocks Exist: No Is VD Cached: No Exit Code: 0x00
<ii>显示所有的物理信息
sudo megacli -PDList -aAll
过滤输出
sudo megacli -PDList -aAll | grep "Firmware state\|Slot Number\|Error"
参考输出
Enclosure Device ID: 32 Slot Number: 11 Enclosure position: 1 Device Id: 11 WWN: 50000397eb88257a Sequence Number: 2 Media Error Count: 0 Other Error Count: 4 Predictive Failure Count: 0 Last Predictive Failure Event Seq Number: 0 PD Type: SATA Raw Size: 7.277 TB [0x3a3812ab0 Sectors] Non Coerced Size: 7.276 TB [0x3a3712ab0 Sectors] Coerced Size: 7.276 TB [0x3a3700000 Sectors] Sector Size: 512 Logical Sector Size: 512 Physical Sector Size: 4096 Firmware state: JBOD Device Firmware Level: GX4D Shield Counter: 0 Successful diagnostics completion on : N/A SAS Address(0): 0x500056b3295a37cb Connected Port Number: 0(path0) Inquiry Data: 77N4K3BIFYRDTOSHIBA MG05ACA800E GX4D FDE Capable: Not Capable FDE Enable: Disable Secured: Unsecured Locked: Unlocked Needs EKM Attention: No Foreign State: None Device Speed: 6.0Gb/s Link Speed: 6.0Gb/s Media Type: Hard Disk Device Drive Temperature :28C (82.40 F) PI Eligibility: No Drive is formatted for PI information: No PI: No PI Drive's NCQ setting : N/A Port-0 : Port status: Active Port's Linkspeed: 6.0Gb/s Drive has flagged a S.M.A.R.T alert : No Enclosure Device ID: 32 Slot Number: 12 Drive's position: DiskGroup: 0, Span: 0, Arm: 0 Enclosure position: 1 Device Id: 12 WWN: 5000CCA02D78FCDB Sequence Number: 2 Media Error Count: 0 Other Error Count: 0 Predictive Failure Count: 0 Last Predictive Failure Event Seq Number: 0 PD Type: SAS Raw Size: 1.090 TB [0x8bba0cb0 Sectors] Non Coerced Size: 1.090 TB [0x8baa0cb0 Sectors] Coerced Size: 1.090 TB [0x8ba80000 Sectors] Sector Size: 512 Logical Sector Size: 512 Physical Sector Size: 512 Firmware state: Online, Spun Up Device Firmware Level: FU29 Shield Counter: 0 Successful diagnostics completion on : N/A SAS Address(0): 0x5000cca02d78fcd9 SAS Address(1): 0x0 Connected Port Number: 0(path0) Inquiry Data: HGST HUC101812CSS200 FU2906J4JPYZ FDE Capable: Not Capable FDE Enable: Disable Secured: Unsecured Locked: Unlocked Needs EKM Attention: No Foreign State: None Device Speed: 12.0Gb/s Link Speed: 12.0Gb/s Media Type: Hard Disk Device Drive Temperature :55C (131.00 F) PI Eligibility: No Drive is formatted for PI information: Yes PI: PI with type 2 Port-0 : Port status: Active Port's Linkspeed: 12.0Gb/s Port-1 : Port status: Active Port's Linkspeed: 12.0Gb/s Drive has flagged a S.M.A.R.T alert : No
参考：Linux系统下安装MegaCli64工具查看和管理raid卡
来源：https://www.cnblogs.com/tonglin0325/p/9003104.html