Promise Technology E610f Manual de usuario descargar pdf (Pagina 8)

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Best Practices Guide 7

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Table 1. Recommended settings

Setting Value Rationale

Subsystem

Redundancy Type Active-Active Supports high availability and load balancing with VTL/SIR.

The default setting is Active-Active.

Controller

LUN Affinity Disabled Ensures compatibility with VTL/SIR.

The default setting is Disabled.

Force Read Ahead Enabled Achieves the optimal performance for multiple stream

backup/restore and deduplication.

The default setting is Disabled.

Please refer to VTrak E610f Product Manual about how to

enable it.

Adaptive Write

Back Cache

Enabled Protects the data integrity in case of Battery Backup Unit (BBU)

failure or a low battery condition.

The default setting is Enabled.

Auto Rebuild Enabled Enable Automatic Rebuild to replace bad drive or Predictive

Drive Migration (PDM) to replace a drive that is going to fail.

These actions improve data reliability by reducing or eliminating

periods of lost redundancy.

The default setting is Enabled.

SATA Physical Drive Settings

ReadAheadCache Enabled Helps to achieve the optimal performance for multiple stream

backup/restore and deduplication.

The default setting is Enabled.

Write Cache Enabled Helps to achieve the optimal performance for multiple stream

backup/restore and deduplication.

The default setting is Enabled.

Medium Error

Threshold

64 This value is 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, thereby

improving system performance and reliability.

The default setting is 0, meaning disabled.

Please refer to E610f Product Manual about how to set Medium

Error Threshold.

Also see the best practice at:

http://www.promise.com/support/support_eng1.asp,

And search for keyword “Medium Error Threshold.”

Promise recommends leaving all other settings at their factory default values.

Alert Notification

It is important to set up the alert notification on the Promise VTrak E610f external disk array subsystem, as this feature

notifies the system administrator and allows him to act accordingly in the event of any status change or failure condition.

The administrator should set up event notification either through Email or Simple Network Management Protocol

(SNMP) during the initial setup phase.

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Promise Technology E610f Manual de usuario Pagina 8

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