Configuring the Storage Device : Creating Storage Configuration Using MegaRAID Storage Manager Software : Creating a Nytro Virtual Drive : Controller Settings

Controller Settings

Current Write Policy

Write Policy: Write Back, Cached, and No Read Ahead.

*

WB: Write Back write policy (default)

*

WT: Write Through write policy (only for normal drive)

*

WBBBU: If a BBU is Write Back, and if BBU is not present, internally, firmware changes the virtual drive to Write Through until it detects BBU.

*

AWB: Regardless of the presence of BBU, the write policy is Write Back.

*

NORA: Normal Read policy (No read ahead).

*

DIO: Direct I/O cache policy.

*

CIO: Cached I/O cache policy.