ATTO Technology SC 5700 operation manual Appendix B Design RAID Groups, Jbod Just a Bunch of Disks

Appendix B Design RAID Groups

The ATTO FastStream provides instant hardware data protection and intelligence to existing storage independent of the storage type.

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.

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

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If a drive has corrupt or outdated configuration data, that drive cannot be assigned to any RAID group.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.

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.

Disk 1	Disk 2	Disk 3
Data 1	Data 5	Data 9
Data 2	Data 6	Data 10
Data 3	Data 7	Data 11
Data 4	Data 8	Data 12

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.

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ATTO Technology Inc. FastStream SC Installation and Operation Manual