12-2
Table12-1 RAID level and number of member drives
RAID level
Minimum number of drives
Maximum number of faulty drives
RAID 0
2
0
RAID 1
2
1
As shown in
, the device has two SATA drive slots. You can install H3C SATA drives in the
slots and configure RAID.
Before configuring RAID, make sure the device has been installed with a riser card and a storage
controller.
Figure12-3 Front panel of the device
(0) SATA drive slot 0 (the drive in the slot is named
hda
)
(1) SATA drive slot 1 (the drive in the slot is named
hdb
)
Creating a RAID array
Before a RAID array is created, the member drives are independent of each other and you can only
read from and write to the drives separately.
After a RAID array is created, all member drives will be used as a whole. Reading and writing data to
one of the member drives is equivalent to reading and writing data to all member drives. After the
RAID array is created, the original data on the member drives will be erased.
Installing hardware
A RAID array setup requires a riser card, storage controller, and SATA drives. The device does not
come with these hardware options. Prepare and install these hardware options.
For information about installing riser cards, storage controllers, and SATA drives, see "
Configuring drives
Restrictions and guidelines
Make sure the member drives for creating the RAID array each have only one partition with the EXT4
file system format. To view detailed information about a drive, partition a drive, and format a drive,
execute the
dir
,
fdisk
, and
format
commands, respectively. For more information about the
