Galaxy® HDX4 - Rorke Data

Chapter 3
System Connections
This c hapter outlines s ome ge neral c onfiguration r ules you s hould follow
when c onfiguring a s torage s ystem and i ntroduces basic i nformation abou t
cabling and t opologies f or the iSCSI v ersion of t he G alaxy H DX4. Yo u can
refer t o t hese t opologies o r us e t hem as a gui de f or dev eloping your o wn
unique t opologies. A c omplete des cription of t he p ower on and p ower of f
procedures is also given in this chapter.
3.1 Connection Overview
3.1.1 Cabling
Following ar e t he requirements for the t ype of c ables us ed t o c onnect t he
system’s iSCSI host ports:
1. Ethernet c ables ar e us er-supplied. Cat5e shielded STP t ype
network cables or better p erformance t ypes ( important f or meeting
the requirements imposed by emission standards). A shielded STP,
twisted-pair cable is available as an accessory.
2. Straight-through Ethernet cables with RJ-45 plugs.
3. Use of cross-over cables can also be automatically detected and rerouted
for a valid connection.
Connection:
1. Directly t o i SCSI in itiators (software or har dware) or via Gigabit
Ethernet switches.
2. To servers equipped with iSCSI HBA – preferably a hardware TOE
(TCP/IP O ffload E ngine) c ard, and t hen t o c lient s tations with a n
Ethernet NIC or iSCSI HBA.
3. The system presents its logical volumes through SCSI-like IDs and
LUNs. T hese RAID volumes then appear as iSCSI targets through
the network.
3-1