Functional Description
1-5
Block 1
Block 2
Block 3
Block 4
Block 5
Block 6
Block 7
Block 8
.
.
Logical Drive
P h y s i c a l D i s k s
Block 1
Block 3
Block 5
Block 7
Block 2
Block 4
Block 6
Block 8
S t r i p i n g
Parity (1,2)
Parity (3,4)
Parity (5,6)
Parity (7,8)
Dedicated
Parity
.
.
.
.
.
.
Block 1
Block 2
Block 3
Block 4
Block 5
Block 6
Block 7
Block 8
.
.
Logical Drive
Physical Disks
Block 1
Parity (3,4)
Block 6
Block 7
Block 2
Block 3
Parity (5,6)
Block 8
Parity (1,2)
Block 4
Block 5
Parity (7,8)
.
.
.
.
.
.
St non-dedicated Parity
IMPORTANT!
•
“RAID (0+1)” will not appear in the list of RAID levels supported by the
controller. If you wish to perform RAID 1, the controller will determine
whether to perform RAID 1 or RAID (0+1). This will depend on the
number of drives that has been selected for the logical drive.
RAID 3
Disk Striping with Dedicated Parity Disk
Figure 1 - 7 RAID 3
RAID 3 performs Block Striping with
Dedicated Parity. One drive member is
dedicated to storing the parity data. When
a drive member fails, the controller can
recover/regenerate the lost data of the
failed drive from the dedicated parity
drive.
RAID 5
Striping with Interspersed Parity
Figure 1 - 8 RAID 5
RAID 5 is similar to RAID 3 but the
parity data is not stored in one
dedicated hard drive. Parity
information is interspersed across the
drive array. In the event of a failure, the
controller can recover/regenerate the
lost data of the failed drive from the
other surviving drives.
RAID 30 an RAID 50
are implemented as logical volumes,
please refer to the proceeding discussions for more details.
RAID 5
Minimum
Disks required
3
Capacity
N-1
Redundancy
Yes
RAID 3
Minimum
Disks required
3
Capacity
N-1
Redundancy
Yes
Содержание External RAID Controller & Subsystem Infortrend
Страница 231: ...Infortrend 10 18 operating in write back mode it is recommended to install a battery module to each controller...
Страница 249: ...Infortrend 11 2 LN SB FL NAME Disk reserved space Partition Information LG Partition Size MB LG Partition Size MB...
Страница 276: ...Array Expansion 12 17 Drive E now has a capacity of about 25GB...
Страница 327: ...Event Messages D 27...