Snapshots; Iscsi Target Volumes; Indicators; Additional Information On Dynamicraid - Overland Storage SnapServer Administrator's Manual

SnapServer 7.0 Administrator's Guide
The filesystem may initially be created at a much larger capacity using Dynamic Volumes,
which grow and shrink on demand, in order to save time; subsequent filesystem expansion
is instantaneous.
When a drive is replaced in the storage pool, DynamicRAID checks to see if the smallest
drive in the system is now larger than before the replacement. If so, the RAID set can be
expanded to utilize the new largest stripe size available. The reporting for this operation is
the same as for the addition of a drive into an empty bay. The RAID set will need to re-
stripe onto the new drive either before or after expansion; in a single parity model, the
system will have no drive redundancy during this operation.

Snapshots

DynamicRAID utilizes current GuardianOS technology and snapshots the entire storage
pool. Provisioning for snapshots is increased as storage space is added to ensure the
percentage of storage reserved remains consistent. The directories inside the snapshot that
represent volumes can be shared individually by the administrator, rather than all at once,
to provide a level of access control.

iSCSI Target Volumes

iSCSI targets use current SnapServer technology. DynamicRAID will maintain the iSCSI
volumes in a separate subdirectory from the root of the filesystem, which will not be
mountable or visible to users.

Indicators

Drives can be inserted into the SnapServer NAS system at any time unless the user is
specifically instructed not to do so.
Each drive bay will have an associated indicator which can be either red, amber or green.
Indicators will show the state of the server. See

Additional Information on DynamicRAID

For more information on DynamicRAID, go to
10400317-001 10/2011
"LED Indicator Meanings" on page
http://docs.overlandstorage.com/dynamicraid
©2010-11 Overland Storage, Inc.
A – DynamicRAID Overview
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