Appendix A - Dynamicraid Overview; Dynamicraid Features; Dynamicraid Versus Traditional Raid - Overland Storage SnapServer Administrator's Manual

Appendix A
DynamicRAID is a powerful new feature that simplifies storage management and
provides additional configuration options not available in Traditional RAID. A
SnapServer can be purchased with any amount of initial storage (or number of drives),
and more capacity can be added over time by inserting or replacing drives. Volumes
can be added and removed at will, and all volumes share the same underlying pool of
storage. The appliance can also be run in Traditional RAID mode to allow more direct
control over storage configuration.
Topics in DynamicRAID:
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•
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DynamicRAID Features

• A drive can be removed and replaced with a larger drive at any time (other than
• DynamicRAID has two forms – one with single parity and one with dual parity.
• During initial setup, the Traditional RAID management option can be chosen, or
• Volumes on DynamicRAID are virtual and may be created almost
• When volumes on DynamicRAID are deleted, the entire directory tree is deleted;
• DynamicRAID is comparable to Traditional RAID for both file-level and block-
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DynamicRAID Overview
DynamicRAID Features
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DynamicRAID versus Traditional RAID

Implementation
Additional Information on DynamicRAID
during a RAID rebuild caused by replacing another drive). This may increase
capacity if the smallest drive of a storage pool composed of mixed-size drives was
replaced with a larger drive.
The parity model can be changed over time.
DynamicRAID can do the work.
instantaneously. They all share the same underlying pool of storage, so there is
no need to worry about the size of the volume when created. At the
administrator's discretion, volumes may be constrained in size so they cannot
consume more than a defined limit. This limit can be adjusted or removed as
required.
therefore, the time it takes to delete a volume depends on the number of
files/directories on the volume.
level access. All of its features apply equally to both file sharing and iSCSI
volumes created on the SnapServer NAS system.
©2010-11 Overland Storage, Inc.
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