Dell Host Bus Adapter User's Guide HBA 355 and 350 Series

MD24xx enclosure supported by Dell HBA355e Adapter

Dell HBA355e Adapter supports external enclosures MD2412, MD2424, and MD2460. To connect to external enclosures, HBA355e Adapter uses the SAS-4 EXTERNAL HD (SFF-8674) 36-PIN & SAS-3 HD Mini-SAS SFF-8644.

The MD24xx enclosure topology rules for Dell HBA355e Adapter are:

• Max number of enclosures supported in dual path configurations are MD2412 (8 enclosures), MD2424 (4 enclosures), and MD2460 (2 enclosure).
• Max number of enclosures supported per port are MD2412 (4 enclosures), MD2424 (2 enclosures), and MD2460 (1 enclosure).
• Mixing of MD2412 and MD2424, MD2412 and MD2460, or MD2424 and MD2460 on same port chain is not supported. Use similar enclosures.
• MD14XX, MD24XX, ME484, and tape drives on the same HBA card is unsupported.
• No loop back connections of enclosures are supported. For example, if there are two enclosures connected in daisy/multipath configuration, then connecting a port of second enclosure again back to one of the port on the first enclosure is not supported.
• Mixing of single path and dual path configurations on the same controller is not supported. For example, if Port 0 and Port 1 are connected to Enclosure 0, then you cannot connect Port 2 to Enclosure 1.
• Interleaving of port for dual path configuration is not supported. For example, if port 0 is used to connect the 1st EMM, then only port 1 should be used to connect multipath to other EMM for the same enclosure.
• Using Port 1 and Port 2 for dual path on the same enclosure is not supported.
• Any combinations conforming to the above rules will be supported.