Install hard RAID Intel ESRT2 in ubuntu

To install hard RAID Intel ESRT2 under ubuntu, You need to configure a raid 1 consisting of two hard disks as S1200BTSR host, E3-1230 v2, 8g ecc memory, this is a mainstream and inexpensive server configuration. Next we will look at how to group raid. Install ubuntu server 12.04 www.2cto.com 1. Configure raid in blos to drive the hard disk. First, set the "Quiet Boot" option to Disabled. You can see more information during startup. Mass storage controller configuration sets "RAID Mode" to "INTEL (R) ESRT2 LSI (*). Another option is INTEL (R) RST, which is more powerful, but does not support linux RAID. After restarting, press ctrl + e to enter the raid configuration interface. In easy congfige, click a blank button on the two hard disks. Then enter, create a raid group for the two hard disks selected previously, then enter the key, select the reorganization, click F10 configuration, select raid 1, and select accept, check that the raid group you created in boot is complete. Select initialize raid to initialize the raid group. Restart the instance. 2. ubuntu can be started through a hard disk or USB flash drive. I use a USB flash drive and use the image write software to write the ubuntu image items. 3. press ctrl + alt + F2 to start a new terminal and enter the dmraid-a y command. This step is very important, it maps hardware raid into a device under/dev/mapper. Then the hard disk can be recognized normally. And partition. Www.2cto.com 4. when writing data to grub, enter the device to write data to/dev/mapper/xxxx, you can use ls/dev/mapper/in the new terminal ctrl + alt + F2 to view the data. It may take a long time and have more patience. After that, the hardware raid configuration is complete. This method is still between soft raid and hard raid. At startup, the hardware raid driver will consume cpu and other resources after loading the linux kernel and taking over the management by linux. Compared with the traditional software raid, the system still sees a raid virtual hard disk at startup (before the Linux kernel is involved), so the two hard disks are exactly the same, it is easier to restore and rebuild. In addition, dmraid maps to the underlying hardware raid drive hardware controller. raid control may also help with some operations and improve performance.