[zfs-discuss] Understanding SAS/SATA Backplanes and Connectivity

[Adam Sherman]

Hello All,

I'm just starting to think about building some mass-storage arrays and  
am looking to better understand some of the components involved.

For example, the Supermicro SC826 series of systems is available with  
three backplanes:

1. SAS / SATA Expander Backplane with single LSI SASX28 Expander Chip
2. SAS / SATA Expander Backplane with dual LSI SASX28 Expander Chips
3. SAS / SATA Direct Attached Backplane

Assuming I am using this an external array, connected to a server via  
SAS, how do these fit into my topology? Expander, dual-expanders and  
no expander? Huh?

Thanks for pointing to relevant documentation.

A.


--
Adam Sherman
CTO, Versature Corp.
Tel: +1.877.498.3772 x113



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