Dell Compellent Series 30 User Manual download pdf (Page 240)

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101

232 Storage Center 5.5 System Manager User Guide

System Management

Data Progression

Data Progression is a separately licensed application. To see if your Storage Center

includes Data Progression, click the

Help

icon at the top of the main window.

Data Progression leverages cost and performance differences between storage tiers,

allowing the maximum use of lower-cost drives for stored data, while maintaining high-

performance drives for frequently-accessed data. Storage Center automatically creates

tiers based on the disks in your system. Tier 1 is fastest, Tier 3 the slowest. To view classes

of tiers on your system, select a disk folder. A list of disk types by tier appears.

Once every 24 hours, Storage Center polls blocks to see if they have been accessed.

Blocks of data are then migrated up or down depending on use. The amount of time the

migration takes depends on the amount of data to be migrated.

Scheduling Data Progression

1 From the Storage Management menu, select

System > Properties

2 Click the

Data Progression

tab. The

Data Progression Properties

window appears.

Figure 190. System Properties - Data Progression

3 Click in the

Hour

Minute

, and

field. Use the up and down arrows to change the

hour, minute or time of day.

4 To limit the amount of time Data Progression runs, select a

Maximum Run Time

, from one

hour to unlimited time.

5 Click

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Dell Compellent Series 30 User Manual Page 240

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