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1.6.6
Flexibility Features
1.6.7
Drive Roaming
•
Supports the external SAS Sideband signal SFF-8485 (SGPIO)
interface
These features increase the flexibility of the ServeRAID M5110
controller:
•
Supports a Flash ROM interface, a nonvolatile static RAM
(NVSRAM) interface, and a pipelined synchronous burst SRAM
(PSBRAM) interface
•
Offers a flexible programming interface to tune I/O performance
•
Allows mixed connections to SAS targets or SATA III targets
•
Leverages compatible connectors for SAS connections and SATA III
connections
•
Allows grouping of up to four PHYs in a single quad port to form a
wide port
•
Allows programming of the World Wide Name
Drive roaming occurs when the physical disks 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.
Note:
In a clustering environment, drive roaming is supported
within the same channel only.
Configuration data is saved in both the NVRAM on the RAID controller
and on the drives attached to the controller. This action 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 restarts; it does not resume from where the
rebuild operation stopped.
Benefits of the ServeRAID M5110 SAS/SATA Controller
1-15
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