Imation DataGuard T5R User Manual download pdf (Page 30)

Global Physical

Drive Settings Description

Enable Write Cache

Helps optimize performance for multiple stream

backup, restoration and elimination of redundant

data (deduplication). Diers from controller-level

cache because physical drive write caches are not

protected. If power is lost or a drive is physically

removed from the array during operation, unwritten

data in the physical drive write caches will be lost.

Write caching is beneﬁcial for write intensive

applications such as video editing that use large

amounts of temporary ﬁles or tend to write in bursts.

However, applications that continuously write large

amounts of data will ﬁll up the cache, which can slow

down throughput. Enabled by default.

Enable Read Look

Ahead Cache

Can improve I/O performance for applications that

typically read data sequentially or on sequential

sectors. Enabled by default.

Enable Command

Queuing

Allows hard disks to optimize the order in which

read/write commands are executed. This minimizes

head movement to reduce physical drive wear, and

can improve performance. Enabled by default.

DMA Mode

Lets you choose the mode used for Direct Memory

Access controller of the physical disk.

Medium Error

Threshold

The number of bad blocks tolerated before the

controller marks a physical drive as Dead. By

enabling this setting, you can identify problem drives

before they fail, improving system performance and

reliability. The default setting is 0 (disabled).

Automatic Acoustic

Management

A method for reducing hard drive noise. This feature

will function only if the installed disk drives support

AAM. Enabled by default.

Automatic Acoustic

Level

Determines whether drives will put more emphasis

on noise reduction or performance. The default

setting is low noise.

Device > Physical Drive > Global Physical Drive Settings

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Imation DataGuard T5R User Manual Page 30

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