Adaptec 3405 User Guide - Page 98
General Controller Settings, Appendix C: Using the Adaptec RAID Configuration Utility - testing
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Appendix C: Using the Adaptec RAID Configuration Utility ● 98 General Controller Settings Note: Default settings are shown in bold type. Option Description Drive's Write Cache When set to Enable All, write cache is enabled on all disk drives on the controller. (Enabling the write cache overrides any individual drive settings in Adaptec Storage Manager.) When set to Disable All, write cache is not used on the disk drives. When set to Drive Specific, write cache is enabled/disabled on a per-drive basis in Adaptec Storage Manager. Caution-When write cache is enabled, there is a slight possibility of data loss or corruption during a power failure. Runtime BIOS When enabled, the controller BIOS allows the controller to act as a bootable device. Disabling the BIOS allows another controller to act as a bootable device. Automatic Failover When enabled, the controller automatically rebuilds an array when a failed disk drive is replaced. When disabled, the array must be rebuilt manually. Array Background Consistency Check When enabled, the controller constantly verifies a redundant array. Note that there may be a significant performance reduction. Default is disabled. Array-based BBS Support When enabled in systems that support BBS, the controller presents attached bootable devices up to the BIOS for boot device selection. This is relevant for logical arrays. Default is disabled. SATA Native Command When enabled, NCQ is enabled. Disable this feature if you want to Queuing (NCQ) attach more than 48 SATA II disk drives. Only available with SATA II disk drives. Physical Drives Display When enabled, connected disk drives are displayed during system Power During POST On Self Test (POST). Displaying the disk drives adds a few seconds to the overall POST time. Default is disabled. DVD/CD-ROM Boot Support When enabled, the system can be booted from a bootable CD. (This setting is not available on all RAID controller models.) Removable Media When enabled, removable media devices, such as CD drives, are Devices Boot Support supported. (This setting is not available on all RAID controller models.) Alarm Control When enabled, the alarm sounds. Default is enabled. Note-When the alarm is turned off (disabled), it will automatically turn back on after a reboot. Default Background Task Priority Sets the default priority for background tasks on the controller (such as logical drive creation) to High, Medium, or Low. Default is Medium. Note-This setting applies to new tasks. It does not affect currently running tasks. LED Indication Mode When set to Activity/Fault, the drive LEDs blink to indicate I/O activity (randomly depending on I/O load) and fault (steady 1Hz). When set to Fault Only, the drive LEDs blink to indicate fault state only. Default is Activity/Fault. Backplane Mode When set to Auto, controller automatically detects backplane signal type: I2C or SGPIO. To set the backplane mode explicitly select SGPIO, I2C, or Disabled. Default is Auto. Selectable Performance When set to Dynamic, performance criteria adjusts automatically based Mode on controller usage, RAID level, and disk drive type. When set to OLTP/ Db, performance criteria is optimized for transaction-oriented applications, such as data entry and retrieval. Default is Dynamic.