User`s manual

Installation Guide

Figure 2-7, SAS expander connect to a drive box or drive enclosure

You must select either mode using the CLI utility and restart the

ARC-8026 expander enclosure again. The manufacture is default

on the Normal Mode. Changing the mode while the ARC-8026

expander box is on. This will not affect expander operation until

the ARC-8026 expander enclosure is rebooted.

In normal mode, a SAS host can communicate with up to 24

drives in the 24 bay enclosure via a single ARC-8026 expander

box. ARC-8026 SAS expander box is a device that contain ex-

pander ports. Expander ports may support being attached to

SAS initiator ports, SAS and/or SATA target ports, and to other

expander ports. The SAS RAID controller or host adapter can

support daisy-chain how many enclosures which depend on the

RAID controller or the host adapter rmware. The following g-

ure shows how to connect the external Min SAS cable from the

SAS RAID controller that has external ports to the ARC-8026

expander box enclosures.

In zone mode, the SAS expander box can be split into up to 8 vir-

tual groups. Each group drive channels and external cable connec-

tors are assigned by CLI GROUP command. The following gure is

shown the SAS expander box which has split into 2 virtual groups.

Each group drive channels are controlled by individual host adapter

using SAS CH1 and SAS CH2.