Microsemi Adaptec ASR-8405E - Page 73

DescriptionOption
Sets the default priority for background tasks on the controller (such as logical drive creation)
to High, Medium, or Low. Default is High.
Default Background Task Priority
Note: This setting applies to new tasks. It does not affect currently
running tasks.
Microsemi Adaptec Series 8 Controllers:Backplane Mode
When set to Default, controller automatically sets the backplane mode to IBPI. To set the
backplane mode explicitly, select IBPI, SGPIO, or Disabled. Default is IBPI.
Note: With the default IBPI setting, the rmware sends a SGPIO "Back-
plane_TYPE" signal if it recognizes that a SGPIO Backplane is connected.
If any connected SGPIO backplane does not support the "Backplane_TY-
PE" signal, or it does not support the IBPI protocol, you can manually
set the Backplane Mode to "SGPIO".
Table 1 • IBPI LED Blink Pattern
3 LEDs per Slot2 LEDs per Slot
Interpreta-
tion
Fail LEDLocate LEDActivity LEDStatus LEDActivity LED
XXOffXOffDrive not
present
XXOnXOnDrive
present, no
activity
XX4 Hz (Blink)X4 Hz (Blink)Drive
present, activ-
ity
Off4 Hz (Blink)X4 Hz (Blink)4 Hz (Blink)Locate (Identi-
fy)
OnOffXOnXFail
1 Hz (Blink)OffX1 Hz (Blink)XRebuild
Table 2 • SGPIO LED Blink Pattern
Fail LEDLocate LEDActivity LEDInterpretation
XXOnActivity
XXOffNo activity
OffOnXLocate (Identify)
OnOffXFail
OnOnXRebuild
When set to Dynamic, performance criteria adjusts automatically based on controller usage,
RAID level, and disk drive type. When set to OLTP/Db, performance criteria is optimized for
Selectable Performance Mode
transaction-oriented applications, such as data entry and retrieval. When set to Big Block B-
ypass, DRAM write cache is bypassed based on IO write size; performance criteria is optimized
for serving Web pages, le serving, and data retrieval. When set to User Dened, you are
prompted to use the OS tools to set individual parameters (contact Microsemi Adaptec
support for more information). Default is Dynamic.
63
Microsemi Proprietary and Condential. Installation and User's Guide Revision 5
Using the Microsemi Adaptec RAID Conguration Utility