Intel RS2WG160 Hardware User Guide - Page 16

SAS/SATA Features • Eight independent PHYs internally, each supporting 6.0 Gbps SAS and SATA data transfers. • Provides 16 internal ports through LSI* SAS2 x36 Expander chip. • Scalable interface that supports up to 240 physical devices and 64 logical devices via expanders. • Supports Serial SCSI Protocol (SSP) to enable communication with other SAS devices. • Supports Serial Management Protocol (SMP) to communicate topology management information. • Allows addressing of multiple SATA targets through an expander if using SATA 2.0- compliant hard disk drives. • Allows multiple initiators to address a single target (in a fail-over configuration) through an expander. Online Capacity Expansion and RAID Level Migration Rules • Migration must occur to the same or larger capacity configuration. • Migration cannot occur if there is more than one virtual disk in a logical array. • Migration and OCE cannot be done on Spanned Arrays (RAID 10, 50, and 60). • Migrations supported are RAID 1 to RAID 0, RAID 5 to RAID 0, RAID 6 to RAID 0. • With OCE, migrations supported are RAID 0 to RAID 1, RAID 0 to RAID 5, RAID 0 to RAID 6, RAID 1 to RAID 5, RAID 1 to RAID 6, RAID 5 to RAID 6. Beep Codes • Short beep (1 second on, 1 second off): Array has degraded but no data has been lost. • Long beep (3 seconds on, 1 second off): Array has failed and data has been lost. • Short beep (1 second on, 3 seconds off): Using hot spare in rebuild; alarm will continue during rebuild with a different sound at completion. To disable the alarm, choose Disable Alarm. To enable the alarm, choose Enable Alarm. To disable the alarm only until the next event or until next power cycle, choose SilenceAlarm. 6 Intel® RAID Controller RS2WG160 Hardware User's Guide