In Win IW-RS316-03, User Manual

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5 Compatibility Lists
To reach best performance and avoid system failure, In Win strongly recommend users choosing the
components from In Win’s compatibility list. All the components are tested in In Win’s lab and assured
the components are working well with In Win’s chassis.
You can download the latest updated device compatibility list from In Win’s website:
https://www.in-win.com/en/ipc-server
6 Q&A
Section 1: Expander
1. What is the In Win Expander’s function?
A: The expansion the capacity, the expander can manage more SAS drives via one SAS cable in
the JBOD.
2. Why IW-RS series storage server chassis are built-in expander board, and IW-RJ series JBOD
enclosures uses expander module?
A: IW-RS chassis needs a motherboard to compose a system, the expander board can work
seamlessly with motherboard to manager the drives. Different from the chassis, IW-RJ JBOD
enclosure use hot swap expander modules to satisfy the requirement of both capacity
expansion and JBOD redundancy.
3. Why IW-RJ JBOD enclosure needs 2 expander modules?
A: It is for redundancy. If user does not need this function, single expander module also works
out.
4. What are the functions of the three connector ports on the expander module?
A: SAS 0 is the connecting port to Server 0/ RAID or HBA 0, SAS 1/ RAID or HBA 1 is to Server 1;
EXP is the port to cascade another JBOD to expand the capacity.
5. Can I add more ports to the expander module?
A: First of all, we have to understand that the ports are for cable connecting. Second, as only as
the Phy quantity of the expander chip set allows, technically, this configuration works out. Yet,
we also need to consider about the technical alignment. For example, an expander with a 3x36R
chipset has totally 36 Phy, and each ports consumes 4 Phy; thus, we can design a 9-port
expander (36/4 = 9) to connect 9 cable. However, once we use out all the Phy for connecting, we
have no remaining Phy to connect HDD, this design will goes meaningless.