linux如何查看硬盘做了raid？centos怎么知道硬盘做了磁盘阵列？

软件raid：只能通过Linux系统本身来查看

cat /proc/mdstat

硬件raid： 最佳的办法是通过已安装的raid厂商的管理工具来查看，有cmdline，也有图形界面。如Adaptec公司的硬件卡就可以通过下面的命令进行查看：
# /usr/dpt/raidutil -L all

dmesg | grep -i "raid"
Adaptec aacraid driver 1.1-5[24702]
scsi0 : aacraid
device-mapper: dm-raid45: initialized v0.2594l

如果没有安装相应的管理工具，可以通过如下命令：

# cat /proc/scsi/scsi

[root@server ~]#  cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
  Vendor: Adaptec  Model: BOOTOS           Rev: V1.0
  Type:   Direct-Access                    ANSI SCSI revision: 02
Host: scsi0 Channel: 01 Id: 00 Lun: 00
  Vendor: WDC      Model: WD1002FAEX-0     Rev: 05.0
  Type:   Direct-Access                    ANSI SCSI revision: 05
Host: scsi0 Channel: 01 Id: 01 Lun: 00
  Vendor: WDC      Model: WD1002FAEX-0     Rev: 05.0
  Type:   Direct-Access                    ANSI SCSI revision: 05
Host: scsi0 Channel: 01 Id: 02 Lun: 00
  Vendor: WDC      Model: WD1002FAEX-0     Rev: 05.0
  Type:   Direct-Access                    ANSI SCSI revision: 05
Host: scsi0 Channel: 01 Id: 03 Lun: 00
  Vendor: WDC      Model: WD1002FAEX-0     Rev: 05.0
  Type:   Direct-Access                    ANSI SCSI revision: 05