r
edundant
c
ascading
das c
onnection
To setup a redundant cascading DAS connection use SFF-8644 external SAS cables to perform these tasks:
1. Connect the SFF-8644 SAS HBA card in
Server 1
to
SAS Port 1
on
Controller 1
of the uppermost Vtrak
unit in the rack (
Unit 1
).
2. Connect
SAS Port 2
port on
Controller 1
of VTrak
Unit 1
to
SAS Port 1
on
Controller 1
of VTrak
Unit 2
.
3. Continue to make cascading connections to Controller 1 in the same manner for any remaining VTrak
units.
4. Connect the HBA card in
Server 2
to
SAS Port 1
on
Controller 2
of Vtrak
Unit 1
.
5. Connect
SAS Port 2
port on
Controller 2
of VTrak
Unit 1
to
SAS Port 1
on
Controller 2
of VTrak
Unit 2
.
6. Continue to make cascading connections to Controller 2 in the same manner for any remaining VTrak
units.
Note
SFF-8644 ports are full-duplex (
IN
and
OUT
) SAS. So you do not need to
follow this cabling description exactly, it is only used as an example.
32
VTrak J5000 Series
Promise Technology
