Chapter 2: VTrak Installation
33
SAS DAS – No Single Point of Failure – JBOD Expansion
Serial Attached SCSI (SAS) Direct Attached Storage (DAS) with no single point
of failure requires:
• Two SAS HBA cards in each Host PC or Server
• A network switch
• A network interface card (NIC) in each Host PC or Server
Data Path
To establish the data path:
1. Connect a SAS data port or data/cascade port of the LEFT controller to the
SAS HBA card in one of the Host PCs or Servers.
See page 34, Figure 21. And see page 35, Figure 22.
2. Connect a SAS data port or data/cascade port of the LEFT controller to the
SAS HBA card in the other Host PC or Server.
3. Connect a SAS data port or data/cascade port of the RIGHT controller to the
SAS HBA card in one of the Host PCs or Servers.
4. Connect a SAS data port or data/cascade port of the RIGHT controller to the
SAS HBA card in the other Host PC or Server.
Management Path
To establish the management path:
1. Connect the Management ports on both VTrak controllers to your network
switch.
2. Connect the NICs in both Host PCs or Servers to your network switch.
Expansion
To expand the number of disk drives:
1. Connect the SAS expansion port on the LEFT controller to the SAS IN port
(with a diamond icon) on LEFT I/O module of the first J610s or J310s unit.
See page 34, Figure 21. And see page 35, Figure 22.
2. Connect the SAS expansion port on the RIGHT controller to the SAS IN port
(with a diamond icon) on RIGHT I/O module of the first J610s or J310s unit.
3. Connect the SAS OUT port (with a circle icon) on LEFT I/O module of the
first J610s or J310s unit to the SAS IN port (with a diamond icon) on LEFT
I/O module of the next J610s or J310s unit.
4. Connect the SAS OUT port (with a circle icon) on RIGHT I/O module of the
first J610s or J310s unit to the SAS IN port (with a diamond icon) on RIGHT
I/O module of the next J610s or J310s unit.
5. Connect the remaining J610s or J310s units in the same manner.
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