Step 3 - Installing the host bus adapters for the
controller-drive tray
Key terms
Host bus adapter (HBA)
A physical board that resides in the host. The HBA provides for data transfer between the host and
the controllers in the storage array over the I/O host interface. Each HBA contains one or more
physical ports.
HBA host port
The physical and electrical interface on the host board adapter (HBA) that provides for the
connection between the host and the controller. Most HBAs have either one or two host ports. The
HBA has a unique World Wide Identifier (WWID) and each HBA host port has a unique WWID.
HBA host port world wide name (WWN)
A 16-character unique name that is provided for each port on the host bus adapter (HBA).
Network interface card (NIC)
A hardware component that connects the host to the controller.
Things to know - Host bus adapters and Ethernet Network
Interface Cards
•
The E2700 controller-drive tray supports two native SAS host ports and the following host
interface cards (HICs):
◦
⁃
A two-port or a four-port 12-Gb/s SAS HIC
⁃
A two-port 10-Gb/s iSCSI Base-T HIC (RJ-45)
⁃
A two-port or a four-port 10-Gb/s iSCSI
⁃
A two-port or a four-port 16-Gb/s Fibre Channel HIC
•
The HBAs, HCAs, or NICs on a host must support the type of port (SAS, iSCSI, or Fibre
Channel) to which they connect on the controller-drive tray. For the best performance, HBAs,
HCAs, and NICs should support the highest data rate supported by the HICs to which they
connect.
Note:
Some servers have GEN2 and GEN3 slots for HBAs. For the best performance, make
sure that GEN3 HBAs are installed in the GEN3 slots on the server.
•
For maximum hardware redundancy, you must install a minimum of two HBAs, HCAs, or NICs
in each host. Using both ports of a dual-port HBA provides two paths to the storage array but does
not ensure redundancy if an HBA fails.
•
You should not attach one host running two different protocols to one storage array at the same
time.
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