HP Xw6400 - Workstation - 4 GB RAM - RAID 1 Arrays

RAID 1 Arrays (Mirrored)
All data written to both drives
Block 1
Block 2
Block 3
Block 4
• RAID 1 = Mirror
• Data is written to two physical drives in real time
• On single disk failure – no system downtime
All data immediately available from other drive
• Duplicate drive rebuilt upon replacement
• Physical space is cut in half (for example, two 40GB drives needed for
• 40GB of space)
• With no loss of data, RAID 1 is perfect for applications requiring very high
availability/security
Block 5
Block 6
Block 7
Block 8
Ph
y
sical Drives
Block 1
Block 2
Block 3
Block 4
Block 5
Block 6
Block 7
Block 8
Block 1
Block 2
Block 3
Block 4
Lo
g
ical
Block 5
Drive
Block 6
Size = Half of total
p
h
y
sical ca
p
acit
y
Block 7
Block 8
Drive B
Drive A
7