6 Intel® RAID Controller RS2WG160 Hardware User’s Guide
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. T
o enable the alarm, choose Enable Alarm.
To disable the alarm only until the next event or until next power cycle, choose
SilenceAlarm.
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