Intel S2600IP Service Guide - Page 108

BIOS Setup Utilities Option Values: Enabled Disabled Help Text: If enabled for the AHCI Capable SATA controller, Staggered Spin-Up will be performed on drives attached to it. Otherwise these drives will all spin up at boot. Comments: This option enables or disables Staggered Spin-up only for disk drives attached to ports on the AHCI Capable SATA Controller. Disk drives attached to SATA/SAS ports on the Storage Control Unit are controlled by a different method for Staggered Spin-Up and this option does not affect them. This option is only visible when the SATA Controller is enabled and AHCI or RAID has been selected as the operational SATA Mode. Staggered Spin-Up is needed when there are enough HDDs attached to the system to cause a marked startup power demand surge when all drives start spin-up together. Since the power demand is greatest just as the drive spinning is started, the overall startup power demand can be leveled off by starting up each drive at a slightly different time, so the power demand surges for multiple drives do not coincide and cause too great a power draw. When Staggered Spin-Up is enabled, it does have a possibility of increasing boot time if there are many HDDs attached, because of the interval between starting drives spinning. However, that is exactly the scenario in which Staggered Spin-Up is most needed, because the more disk drives attached, the greater the startup demand surge. Setting the external eSATA connector Enabled (when available) does not invalidate the Staggered Spin-Up option, although there may be less need for Staggered Spin-Up in a system configured for eSATA use. 6. AHCI Capable RAID Options Option Values: Intel® ESRT2 (LSI*) Intel® RSTe Help Text: - Intel® ESRT2 (Powered By LSI*): Supports RAID 0/1/10 and optional RAID 5 with Intel® RAID C600 Upgrade Keys. Uses Intel ESRT2 drivers (based on LSI* MegaSR). - Intel® RSTe: Provides pass-through drive support. Also provides host based RAID 0/1/10/5 support. Uses Intel® RSTe iastor drivers. Comments: This option only appears when the SATA Controller is enabled, and RAID Mode has been selected as the operational SATA Mode. This setting selects the RAID stack to be used for SATA RAID with the onboard AHCI SATA controller. If a RAID Volume has not previously been created that is compatible with the RAID stack selected, it will be necessary to Save and Exit and reboot in order to create a RAID Volume. 7. SAS/SATA Capable Controller 96 Intel® Server System R2000IP Service Guide