Installation guide
20
EMC Host Connectivity with QLogic Fibre Channel HBAs and CNAs in the Windows Environment
Installation and Configuration
for the first time when connected to EMC VNX series or CLARiiON
storage.
With the Stratus ftServer, if the adapter detects EMC VNX series or
CLARiiON targets but no accessible LUNs, it prevents the Stratus
server from booting. In this configuration, the Stratus ftServer
attempts to boot from the array, instead of booting from the internal
boot drive.
To avoid this issue before storage is correctly assigned, either boot the
Stratus ftServer before connecting the fibre cables to the adapters or,
if connected to a fabric, disable the adapter ports on the switch before
booting the ftServer.
After the system boots, connect the cables or re-enable the switch
ports. Verify the adapters are logged in to the EMC VNX series or
CLARiiON system; then stop and restart the
Unisphere
™
/Navisphere
®
agent on the ftServer host. This will
register the adapters with the VNX series or CLARiiON system and
allow the adapter to properly detect the available LUNs.
Matching the adapter with the correct PCI slot
When choosing an adapter for your server, it is important to know
which adapter is compatible with your server’s PCI/PCI-X/PCI
Express slots. Certain adapter models have specific voltage
requirements or physical limitations that allow them to only work in
specific slots.
Servers today have several different bus slot types for accepting
adapters. PCI, PCI-X, PCI-X 2.0, and PCI-Express.
PCI slots can be 32-bit and 64-bit (denoted by their 124-pin or 188-pin
connectors). These slots have plastic “keys” that prevent certain
adapters from fitting into them. These keys work with the cutout
notches in the adapter edge connector so that only compatible
adapters will fit into them. This is done because of the voltage
characteristics of the adapter. Inserting a 3.3v adapter into a 5v slot
would cause severe damage to both the adapter and the server.
Therefore, the slot keys denote the type of voltage provided by the
slot and effectively prevent a voltage incompatible adapter from
being inserted.