ATTO Technology FastStream SC 5700 - Manual (Page 66)

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ATTO Technology Inc. FastStream SC Installation and Operation Manual
Appendix B Design RAID Groups
The ATTO FastStream provides instant hardware data protection and intelligence to existing storage independent
of the storage type.
CAUTION CAUTION
RAID improves data accessibility and
reliability during normal operations,
however, you still need a good backup
strategy for long-term protection of your
data.
To set up RAID groups refer to Configure Storage
into RAID Groups on page 13.
The ATTO FastStream allows RAID functionality. In
general, the process begins with individual drives
called block devices.
Note
If a drive has corrupt or outdated configuration
data, that drive cannot be assigned to any
RAID group. Ensure all drives are configured
properly. Refer to
Ensure Drive Integrity on
page 11 or Removing RAID configuration
data on page 35.
A RAID group is a virtual, independent single drive
whose data is written to physical drives according to a
RAID algorithm. The ATTO FastStream supports
JBOD, DVRAID, RAID Level 0, 1, 1+ 0, 4 and 5 for all
models and RAID Level 6 for the FastStream SC
5500.
RAID improves data accessibility and reliability during
normal operations, however, you still need a good
backup strategy for long-term protection of your data.
JBOD: Just a Bunch of Disks
JBOD configuration allows many individual drives to
be available for normal storage operations with no
special data protection by combining several drives
into one large drive. A special case of a RAID group,
multiple physical drives are assigned to a JBOD RAID group and their storage areas appear as a single
spanned area of storage.
The ATTO FastStream supports 1 to 32 drives per
JBOD-configured RAID group.
DVRAID: Digital Video RAID
Digital Video RAID provides parity redundancy for
your data. Optimized for performance for the high data
transfer rates required in digital video environments,
DVRAID is ATTO Technology proprietary technology
which supports the editing of uncompressed 10-bit High Definition (HD) video and multiple streams of
real-time, uncompressed Standard Definition (SD)
video.
You must use the Quick Digital Video setup wizard in
the ExpressNAV Storage Manager.
Data 4
Data 3
Data 2
Data 1
Data 12
Data 11
Data 10
Data 9
Data 8
Data 7
Data 6
Data 5
Disk 1 Disk 2 Disk 3