Deployment Guide

NOTE: Do not install iSCSI HBAs or network adapters from different vendors in the same server.
b. Install supported drivers for the HBAs or network adapters and make sure that the HBAs or network adapter have the latest
supported firmware.
c. Use the host operating system to assign IP addresses for each iSCSI port. The IP addresses must match the subnets for
each fault domain.
CAUTION: Correctly assign IP addresses to the HBAs or network adapters. Assigning IP addresses to the wrong
ports can cause connectivity issues.
NOTE: If using jumbo frames, they must be enabled and configured on all devices in the data path, adapter ports,
switches, and storage system.
d. Use the iSCSI cabling diagrams to cable the host servers to the switches. Connecting host servers directly to the storage
system without using Ethernet switches is not supported.
• If the host server is a vSphere host:
a. Install the iSCSI HBAs or network adapters dedicated for iSCSI traffic in the host servers.
b. Install supported drivers for the HBAs or network adapters and make sure that the HBAs or network adapter have the latest
supported firmware.
c. If the host uses network adapters for iSCSI traffic, create a VMkernel port for each network adapter (1 VMkernel per
vSwitch).
d. Use the host operating system to assign IP addresses for each iSCSI port. The IP addresses must match the subnets for
each fault domain.
CAUTION: Correctly assign IP addresses to the HBAs or network adapters. Assigning IP addresses to the wrong
ports can cause connectivity issues.
NOTE: If using jumbo frames, they must be enabled and configured on all devices in the data path, adapter ports,
switches, and storage system.
e. If the host uses network adapters for iSCSI traffic, add the VMkernel ports to the iSCSI software initiator.
f. Use the iSCSI cabling diagrams to cable the host servers to the switches. Connecting host servers directly to the storage
system
without using Ethernet switches is not supported.
Two iSCSI Networks with Dual 10 GbE 2–Port Storage Controllers
Use two iSCSI networks to prevent an unavailable port, switch, or storage controller from causing a loss of connectivity between
the host servers and a storage system with dual 10 GbE 2-port storage controllers.
About this task
This configuration includes two fault domains, two iSCSI networks on separate subnets, and two Ethernet switches. The storage
controllers connect to each Ethernet switch using one iSCSI connection.
• If a physical port or Ethernet switch becomes unavailable, the storage system is accessed from the switch in the other fault
domain.
• If a storage controller becomes unavailable, the virtual ports on the offline storage controller move to the physical ports on the
other storage controller.
Steps
1. Connect each server to both iSCSI networks.
2. Connect fault domain 1 (shown in orange) to iSCSI network 1.
• Storage controller 1: port 1 to Ethernet switch 1
• Storage controller 2: port 1 to Ethernet switch 1
3. Connect fault domain 2 (shown in blue) to iSCSI network 2.
• Storage controller 1: port 2 to Ethernet switch 2
• Storage controller 2: port 2 to Ethernet switch 2
Connect the Front-End Cabling
51