Raid10 (Raid1+0: Striping + Mirroring) - Acer Veriton M661 User Manual

Intel Matrix Storage Manager Quick Guide for Acer Selected Veriton PC V1.1
Disk 1 Disk 2
Block A1 Block A2
Block B1 Block Bp
Block Cp Block C1
Physical Physical
disk
disks
120 GB
120 GB

RAID10 (RAID1+0: striping + mirroring)

• A combination of RAID1 and RAID0 — mirroring and striping, but without
parity.
• RAID10 is used for both replicating and sharing data among disks.
• RAID10 is often the primary choice for high-load databases, because the
lack of parity to calculate gives it faster write speeds.
• RAID10 volume capacity = 2 x (capacity of smallest HDD)
RAID 0
RAID 1
Disk 1 Disk 2
Block A1 Block A1
Block A3 Block A3
Block A5 Block A5
Physical
Physical
Physical
disks
disks
disks
120 GB
120 GB
120 GB
Characteristics/Advantages
RAID0
RAID0 implements a striped
disk array, the data is broken
down into blocks and each
block is written to a separate
disk drive
I/O performance is greatly
improved by spreading the I/O
load across many channels and
drives
Best performance is achieved
when data is striped across
Disk 3
Block Ap
Block B2
Block C2
Physical Logical disks
disk 240 GB
120 GB
RAID 1
Disk 3 Disk 4
Block A2 Block A2
Block A4 Block A4
Block A6 Block A6
Physical Logical disks
disks 240 GB
120 GB
7/21
Disadvantages
Not a "True" RAID because it is
NOT fault-tolerant
The failure of just one drive
will result in all data in an
array being lost
Should never be used in
mission-critical
environments