ATTO Technology SC 5700 operation manual Selecting an application, Fault Tolerance, Initialization

•If no unallocated drive is available, you must replace the faulted drive and a rebuild begins. If you are using a FastStream 5300, you must initiate a system scan using the CLI command BlockDevScan to discover the drive before the rebuild can take place; all other appliances automatically discover the additional drive.

•Hot Spares are not required, allowing the maximum number of drives for data storage. However, if you require maximum fault tolerance, it is best practice to have a Hot Spare available to supply the unallocated drive for immediate use. Refer to FastStream process: adding or removing Hot Spares on page 34.

•Hot Spares are used first, regardless of the Auto-Rebuild setting.

Fault Tolerance

Choose either Standard Fault Tolerance (no Hot Spare drives) or Maximum Fault Tolerance (which adds Hot Spares to the system). Refer to FastStream process: adding or removing Hot Spares on page 34 for details.

Initialization

If you have not already initialized your drives as outlined in Ensure Drive Integrity on page 11, you may choose to use the Advanced Initialization for new drives to erase and verify drive media and correct some soft drive errors. The RAID Group is unavailable until the operation completes.

Choose Express Initialization to perform a quick background initialization if you have already completed a full initialize and verify operation. The RAID Group being initialized is available for use during express initialization.

Selecting an application

After initializing drives or setting up new storage, select an application from the Initial Setup or Manage page. The FastStream finds all available drives and creates the appropriate setup using those drives.

The most flexible choice is to use Custom Setup, but you must understand your needs and your system well to use this option.

Refer to Design RAID Groups on page xix of the Appendix for more information about RAID.

Preliminary steps

1If you are not already in the ExpressNAV Storage Manager, type the IP address of your appliance in a standard browser. On the splash screen, click Enter Here. In the box provided, type in your user name and password, and click OK.

2If you have not used the Ensure Drive Integrity on page 11 or created other RAID groups, the Initial Setup Menu appears.

If you have initialized your storage or created other RAID configurations,

a.From the selections at the left, select

Manage.

b.Click on the RAID Groups arrow.

c.Click on Create RAID Group.

d.Click on Next.

3Select one of the following and continue using the directions in each specific section:

•Quick Digital Video: provides parity RAID protection (DVRAID) and optimized performance for digital video (sequential access) configurations.

Note

DVRAID is only available using the Quick Digital Video setup wizard.

•General Digital Video: provides parity RAID protection for digital applications for configurations using three or more drives.

•Audio: Audio track streaming technology provides parity RAID protection while managing latency to allow high-speed availability to support up to 192 tracks of 16-bit audio or 96 tracks of 24-bit audio in a single editing session. You must have only 4, 6, 8 or 12 drives available in the system.

•General IT: provides parity RAID protection optimized for random access applications using three or more drives.

•Database: provides parity RAID protection for database applications (small transfer, random access) for configurations using more than three drives.

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