HP EliteBook 8770w RAID User Guide - Page 8

RAID mode summary, The following table describes the functions, applications

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RAID mode summary The following table describes the functions, applications, and advantages and disadvantages of the supported RAID modes. RAID levels RAID 0 RAID 1 Function/Applications Advantages/Disadvantages Function: Advantages: Data is distributed across both disk drives. Applications: ● Image editing ● Video production ● Pre-press applications Read performance is higher than that of a nonRAID hard drive. Total storage capacity is doubled. Disadvantages: The entire array fails if one drive fails; data cannot be recovered. Storage space may be wasted if the capacities of the primary and recovery hard drives are different (see HP SATA drive option kits on page 7). Function: Advantages: Identical (mirrored) data is Provides high fault stored on two drives. tolerance. Applications: ● Accounting ● Payroll ● Financial Disadvantages: Only half of the total drive capacity can be used for storage. Storage space may be wasted if the capacities of the primary and recovery hard drives are different (see HP SATA drive option kits on page 7). 4 Chapter 2 RAID technology overview

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RAID mode summary
The following table describes the functions, applications, and advantages and disadvantages of the
supported RAID modes.
RAID levels
Function/Applications
Advantages/Disadvantages
RAID 0
Function:
Data is distributed across
both disk drives.
Applications:
●
Image editing
●
Video production
●
Pre-press applications
Advantages:
Read performance is
higher than that of a non-
RAID hard drive.
Total storage capacity is
doubled.
Disadvantages:
The entire array fails if one
drive fails; data cannot be
recovered.
Storage space may be
wasted if the capacities of
the primary and recovery
hard drives are different (see
HP SATA drive option kits
on page
7
).
RAID 1
Function:
Identical (mirrored) data is
stored on two drives.
Applications:
●
Accounting
●
Payroll
●
Financial
Advantages:
Provides high fault
tolerance.
Disadvantages:
Only half of the total drive
capacity can be used for
storage.
Storage space may be
wasted if the capacities of
the primary and recovery
hard drives are different (see
HP SATA drive option kits
on page
7
).
4
Chapter 2
RAID technology overview