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WebPAM User v1.5 - Promise Technology, Inc.

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25<br />

Chapter 3: Setup<br />

11. Select a Stripe Block Size from the dropdown menu.<br />

Choose from 32, 64 or 128 KB. The size selected affects how FastTrak<br />

sends and receives data blocks to and from the drives. In general, a larger<br />

block size is better when handling large data transfers (such as A/V editing<br />

and graphics) while a smaller size is better when handling email and other<br />

common server data. The default is 64KB. When in doubt, use the default<br />

value.<br />

12. Select a Write Cache policy from the dropdown menu.<br />

• Auto Switch – The setting is made automatically. This is the default.<br />

• Write Back – <strong>Inc</strong>reases performance but can result in data loss in the<br />

event of a power failure.<br />

• Write Through – Slower but more secure.<br />

13. Select a Gigabyte Boundary policy from the dropdown menu.<br />

• GigaByte Boundary – Rounds the size of the logical drive down to the<br />

nearest whole gigabyte. It allows you to install a slightly smaller (within 1<br />

GB) replacement drive, should the need arise. This is the default.<br />

• None – No Boundary function.<br />

14. Select an Initialization policy from the dropdown menu.<br />

• Fast Initialization – Erases the reserve and master boot sectors of the<br />

physical drives being added to the logical drive.<br />

• Full Initialization – Erases all sectors of the physical drives being<br />

added to the logical drive.<br />

• None – No initialization. This choice is not recommended.<br />

15. Click the Finish button.<br />

If there are physical drives available, the Select RAID Level screen appears<br />

again, where you can create an additional logical drive.

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