有几台ibm-x3550服务器使用了ServeRAID M1115系列阵列卡，配置或查看阵列信息以前都是通过开机选择阵列卡管理程序完成，无法直接通过linux的命令行实现对阵列卡信息的管理，无法有效发现阵列中磁盘的的信息。
1、查看服务器阵列卡基本信息
cat /proc/scsi/scsi
2、MegaCli在linux系统下的Raid管理命令行工具
MegaCli 是LSI公司官方提供的SCSI卡管理工具，由于LSI被收购变成了现在的Broadcom，所以现在想下载MegaCli，需要去Broadcom官网查找Legacy产品支持，搜索MegaRAID即可。
3、下载MegaCli软件
wget http://delivery04.dhe.ibm.com/sar/CMA/XSA/ibm_utl_sraidmr_megacli-8.02.21_linux_32-64.zip
4、解压安装MegaCli
unzip ibm_utl_sraidmr_megacli-8.02.21_linux_32-64.zip
rpm -ivh Lib_Utils-1.00-09.noarch.rpm
rpm -ivh MegaCli-8.02.21-1.noarch.rpm
安装完成后系统自动装到/opt/MegaRAID/MegaCli目录下
5、查看Adapter 信息：
./MegaCli64 -AdpAllInfo -aALL
MegaCli64很多命令都要在最后用-a指定Adapter，我只有Adapter #0 所以今后都写-a0就行，还可以-a0,1,2或-aALL
6、查看阵列卡具体业务配置
./MegaCli64 -CfgDsply -aALL
输出信息显示有一个磁盘组，2块物理磁盘，做了raid1，磁盘组的容量为300G，磁盘类型为SAS磁盘
Encryption Type : None
Is VD Cached: No
Physical Disk Information:
Physical Disk: 0--------------------第一块物理磁盘信息
Enclosure Device ID: 64
Slot Number: 0
Drive's postion: DiskGroup: 0, Span: 0, Arm: 0
Enclosure position: 0
Device Id: 9
WWN: 5000039478307F7D
Sequence Number: 2
Media Error Count: 0
Other Error Count: 0
Predictive Failure Count: 6
Last Predictive Failure Event Seq Number: 108493
PD Type: SAS
Raw Size: 279.396 GB [0x22ecb25c Sectors]
Non Coerced Size: 278.896 GB [0x22dcb25c Sectors]
Coerced Size: 278.464 GB [0x22cee000 Sectors]
Firmware state: Online, Spun Up
Device Firmware Level: SC27
Shield Counter: 0
Successful diagnostics completion on : N/A
SAS Address(0): 0x5000039478307f7e
SAS Address(1): 0x0
Connected Port Number: 1(path0)
Inquiry Data: IBM-ESXSMK3001GRRB SC27Z2N08G92SC27SC27SC27
IBM FRU/CRU: 81Y9671
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 write cache : Disabled
Port-0 :
Port status: Active
Port's Linkspeed: 6.0Gb/s
Port-1 :
Port status: Active
Port's Linkspeed: Unknown
Drive has flagged a S.M.A.R.T alert : Yes
Physical Disk: 1----------第二块物理磁盘
Enclosure Device ID: 64
Slot Number: 1
Drive's postion: DiskGroup: 0, Span: 0, Arm: 1
Enclosure position: 0
Device Id: 11
WWN: 500003947830A5B9
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: 279.396 GB [0x22ecb25c Sectors]
Non Coerced Size: 278.896 GB [0x22dcb25c Sectors]
Coerced Size: 278.464 GB [0x22cee000 Sectors]
Firmware state: Online, Spun Up
Device Firmware Level: SC27
Shield Counter: 0
Successful diagnostics completion on : N/A
SAS Address(0): 0x500003947830a5ba
SAS Address(1): 0x0
Connected Port Number: 0(path0)
Inquiry Data: IBM-ESXSMK3001GRRB SC27Z2N0BF92SC27SC27SC27
IBM FRU/CRU: 81Y9671
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 write cache : Disabled
Port-0 :
Port status: Active
Port's Linkspeed: 6.0Gb/s
Port-1 :
Port status: Active
Port's Linkspeed: Unknown
Drive has flagged a S.M.A.R.T alert : No
Exit Code: 0x00
7、查看每块物理盘的信息和状态，跟前面一样
./MegaCli64 -PDList -a0
8、如何查找磁盘故障
a、 ./MegaCli64 -PDList -a0 | grep Failure
Predictive Failure中已经涵盖media error，而且比media error的范围更广、更全面。
b、./MegaCli64 -PDList -a0 | grep Firmware
磁盘的状态，Online是我们期望看到的最好状态，除此之外还有 Unconfigured Offline Failed等等，除了online之外的状态均表示磁盘退出服务，需要更换，这个标准没有a标准严格，有可能a已经报错但磁盘还没有退服，但是数据已经不能同步会丢失，只有一块盘可用了。
c、查看阵列中有那块盘已经退服
./MegaCli64 -pdgetmissing -a0
d、查看磁阵运行状态
./MegaCli64 -LDInfo -L0 -a0
e、查看raid卡支持的插槽信息
./MegaCli64 -EncInfo -a0
9、查看阵列日志
a、查看固件日志
./MegaCli64 -FwTermLog dsply -a0
b、查看全部日志信息
./MegaCli64 -AdpAliLog -a0 > alllog.txt
最后在给出一个关于MegaCli的操作手册下载链接地址：