Promise Technology FastTrak TX2300 User Manual download pdf (Page 102)

FastTrak TX2200, TX2300 User Manual

Other Logical Drive Features

Stripe Block Size

The stripe block size value can be set to 32 KB, 64 KB, and 128 KB.

64 KB is the default. This selection will directly affect performance. There are two

issues to consider when selecting the stripe block size.

• Choose a stripe block size equal to or smaller than the smallest cache buffer

found on any physical drive in your logical drive. A larger value slows the

logical drive down because physical drives with smaller cache buffers need

more time for multiple accesses to fill their buffers.

• If your data retrieval consists of fixed-size data blocks, such as some

database and video applications, choose that data block size as your stripe

block size.

Generally speaking, email, POS and webservers prefer smaller stripe block

sizes. Video and database applications prefer larger stripe block sizes.

Initialization

Fast Initialization erases the Master Boot Record (MBR) in all of the selected disk

drives. Use this function when one or more disk drives has been used in a

previous logical drive. This function is available in the FastBuild utility and in

WebPAM.

Full Initialization erases all the data on the selected disk drives, including the

MBR. Use this function when one or more disk drives has been used in a

previous logical drive and you want to remove all data stored on the drive. This

function is available in WebPAM.

Hot Spare Drive

This feature does not apply to FastTrak TX2200 and TX2300 because the

controller only supports two physical drives.

Cache Settings

Cache settings are not adjustable on the FastTrak TX Series RAID Controller

card.

Logical Drive Expansion

To expand a logical drive is to increase the number of disk drives.

The FastTrak TX Series RAID Controller card supports logical drive expansion.

However, you must use the WebPAM software to access this function.

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Promise Technology FastTrak TX2300 User Manual Page 102