Retsam_Evals
n00b
- Joined
- Apr 7, 2014
- Messages
- 4
A SAS expander for example can have 2 SFF ports (8 SAS ports) connected to the host. What would happen if you connected for example a 36 port SAS expander to a bunch of hard drives and then one SFF port to one HBA in one server and another SFF port to another HBA of a different server.
I see even if this would work I guess it would need to be active/passive. The expander is a single point of failure, but if it could work this way it should be possible to have multiple expanders to allow full access to the data even if one fails. Even with one SAS expander it seems less likely to lose the one item than any CPU, RAM stick, NIC, HBA, etc that could take down a single server.
I can't seem to find out any information on if this would work, but I have seen information for budget clusters using DAS boxes.
So does anyone know if this could work? If my explanation is not clear enough I can make a diagram.
I see even if this would work I guess it would need to be active/passive. The expander is a single point of failure, but if it could work this way it should be possible to have multiple expanders to allow full access to the data even if one fails. Even with one SAS expander it seems less likely to lose the one item than any CPU, RAM stick, NIC, HBA, etc that could take down a single server.
I can't seem to find out any information on if this would work, but I have seen information for budget clusters using DAS boxes.
So does anyone know if this could work? If my explanation is not clear enough I can make a diagram.