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NETWORK STORAGE MANAGER: ADVANCED - 114
WD SHARESPACE
USER MANUAL
Manage RAID
Configure RAID on the hard drives using the Manage RAID tab on the Volume
Management submenu.
WARNING! Changing the RAID configuration causes all volumes and
data to be lost.
RAID (Redundant Array of Independent Drives) refers to an array of multiple
independent hard drives that provide high performance and reliability. RAID function
depends on the number of drives present and the RAID level selected.
The WD ShareSpace supports the following RAID levels:
• RAID 0 (Striped) - Provides data striping (spreading out blocks of each file
across multiple hard drives) but no redundancy. This improves performance but
does not deliver fault tolerance. If one drive fails then all data in the array is lost.
• RAID 1 (Mirrored) - Provides disk mirroring. Mirroring creates an exact copy (or
mirror) of a set of data on two drives, which increases reliability compared to a
single drive. If either drive fails, the other continues to function as a single drive
until the failed drive is replaced. Note this RAID type has the highest disk
overhead (100%) of all RAID types. This option is only available with two drives
installed.
• Two Mirror - Two Mirror mode is available when four drives are installed in the
WD ShareSpace. In this mode, two independent RAID 1 volumes are created.