Nytro MegaRAID Overview : On-Board LSISAS-2 Expander Support

On-Board LSISAS-2 Expander Support

The Nytro MegaRAID81xx-8e8i controller board contains an on-board LSISAS2x20 6Gb/s SAS/SATA expander that expands the SAS connectivity, which appears as a backplane in the MegaRAID Storage Manager GUI.

The expander contains four ports, that is, two internal ports and two external ports. Two internal ports support connecting a maximum of eight direct-attach devices or external expander and two external ports are only for external expander.

SGPIO or SCSI enclosure services (SES) over I2C are the identified protocols for backplane management. Backplane management is supported only through internal ports, but a mix of SGPIO and I2C backplane is not supported.