Seagate NAS OS 4 U User Manual page 109

Maximum Spare Drives
5
4
5
4
RAID 1: The same data is written across all hard drives in the volume, protecting data against the loss of one
RAID 10: Comprised of two or more RAID 1 segments, RAID 10 allows for single-disk failure in each
RAID 5 and RAID 6: Data is written in parity blocks on all hard drives in the volume. Files are protected
A RAID+Spare volume gives you a "hot-spare" that is ready to synchronize data immediately should a hard
drive fail. If a hard drive fails, the data starts to synchronize with the spare. The clear advantage for a RAID
.When the failed hard drive is replaced, the replacement hard drive becomes the new hot spare
To create a volume with a spare hard drive, you must choose Custom in the New network volume wizard.
Selecting Quick setup in the New network volume wizard will automatically configure a volume with SimplyRAID
and single disk protection. SimplyRAID optimizes disk space across all hard drives to maximize data storage.
Therefore, it does not include the option to add a spare drive. See
Important info: For RAID+Spare volumes, data remains intact when a single disk fails and the spare
begins synchronizing automatically. If a second disk in the volume fails before synchronization is
Quick setup: Skip multiple configuration steps with NAS OS SimplyRAID, Seagate's smart RAID. SimplyRAID
will review the amount of hard drives in the volume and the total storage to optimize data capacity and
protect your data. To provide the most storage space for your data, Quick setup configures a SimplyRAID
volume with single-disk security. For additional protection, SimplyRAID is also available with double-disk
Custom: Configure a volume using NAS OS SimplyRAID or standard RAID models. Custom offers a wide
(SimplyRAID with single-disk protection (minimum of two hard drives for data protection
109
.volume with a spare is that you do not have to wait for a replacement hard drive
.complete, all data in the volume will be lost. RAID 6 allows for two disks to fail
:Build one or more volumes using the New network volume wizard. You can select
10/18/16
RAID Mode
RAID 1
RAID 10
RAID 5
RAID 6
.against single- or double-disk failure, respectively
New network volume wizard
New network volume wizard
.hard drive
.segment
for instructions
.on creating volumes
.security when selecting Custom
:range of RAID configurations
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Seagate NAS OS 4