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Summary of MegaRAID 8480 RAID Controller Characteristics 1-11
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• Supports the internal SAS Sideband signal SFF-8485 (SGPIO)
interface
1.6.5 Flexibility Features
These features increase the flexibility of the MegaRAID 8480 RAID
controller:
• Supports a Flash ROM interface, a nonvolatile RAM (NVSRAM)
interface, and a pipelined synchronous burst SRAM (PSBRAM)
interface
• Allows connections to SAS or SATA II targets
• Leverages compatible connectors for SAS and SATA II connections
• Allows grouping of up to four PHYs in a single quad port to form a
wide port
1.6.6 Drive Roaming
Drive roaming occurs when the hard drives are changed to different ports
on the same controller. When the drives are placed on different channels,
the controller detects the RAID configuration from the configuration data
on the drives.
Configuration data is saved in both the NVRAM on the RAID controller
and on the hard drives attached to the controller. This maintains the
integrity of the data on each drive, even if the drives have changed their
target ID.
Note:
If you move a drive that is being rebuilt, the rebuild
operation will restart, not resume.
Follow these steps to use drive roaming:
Step 1. Review all safety information provided with the server; then,
turn off the server and all attached devices and unplug the
server and device power cords.
Step 2. Open the host system, following the instructions in the host
system technical documentation.
Step 3. Move the drives to different positions on the backplane to
change the targets.