RAID Subsystem DVA-12T | Installation Manual Subsystem Connection and Operation | en 27Bosch Security Systems F.01U.027.798 | V1 | 2006.065 Subsystem Connection and Operation5.1 CablingFollowing are the requirements on the type of cables used to connect the subsystem’s iSCSIhost ports:• Gigabit Ethernet network cables.• Cat6 type cables or better performance types.• Straight-through Ethernet cables with RJ-45 plugs.• Use of cross-over cables can also automatically be detected and re-routed for a valid con-nection.Connection can be made directly to iSCSI initiators or through Gigabit Ethernet switches, toservers equipped with an iSCSI HBA, and then to client stations with a normal NIC or iSCSIHBA. The subsystem presents its logical capacity volumes through SCSI-like IDs and LUN’s,and these volumes appear as iSCSI targets through the network.5.2 Host Connection TopologiesThe RAID subsystem provides two Gigabit Ethernet ports. The host-side connection can bemade as the following:• Directly attached to the VIP X1600 encoder unit• Connection through Ethernet SwitchNetwork configurations, such as subnet or VLAN settings, can be applied as long as perma-nent IPs are available with the subsystem’s iSCSI host ports. Automatic assignment methods,such as DHCP, are not recommended for configuring the iSCSI connection. RAIDWatch needto access the array over standard TCP/IP and RAIDWatch may not recognize an array if portIPs have been changed.Channel Default Settingsi NOTICE!All cables must be handled with care. Make sure Ethernet cables do not run parallel withpower cords. To prevent interference within a rack system, the cable routing path must becarefully planned and they must not be bent.Model Host Channels Drive ChannelsRAID subsystem CH0 and CH1 Channels 2 to 13, each dedi-cated to one connected driveTable 5.1 Subsystem’s Default Channel Settings