Emulex LightPulse LPe1105-M4 HBA Installation Guide download pdf (Page 122)

122

EMC Host Connectivity with Emulex FC HBAs and FCoE CNAs for the Linux Environment

Configuring a Boot Device on an EMC Storage Array

Cautions and restrictions booting from an EMC storage array

Note the following cautions and restructions when booting from an

EMC storage array:

CAUTION

If the Linux host booting from the SAN loses connectivity long

enough, the disks will disappear from the system. To prevent

further data from being lost in a situation like this, EMC

recommends that the error behavior be changed from continue to

remount read-only. To make this change, consult the man page for

tune2fs. A hard reboot is required to bring the system back to a

usable state.

CAUTION

You should configure the host with enough memory to eliminate

the need for a swap partition. EMC cannot recommend an amount

of memory as this varies greatly depending upon the environment.

EMC recommends shutting down the host server during any

maintenance procedures that could make the boot disk unavailable to

the host.

Any of these events have the potential to crash a system booting from

an EMC storage array:

Symmetrix-specific cautions and restrictions

The following are Symmetrix-specific restrictions:

◆ Lost connection to Symmetrix system (pulled or damaged cable

connection).

◆ Symmetrix service and upgrade procedures, such as online

Symmetrix microcode upgrades and/or configuration changes.

◆ Symmetrix director failures, including failed lasers.

◆ Symmetrix system power failure.

◆ Storage area network service and upgrade procedures, such as

firmware upgrades or hardware replacements.

1 2 ... 117 118 119 120 121 122 123 124 125 126 127 ... 181 182

No comments

Emulex LightPulse LPe1105-M4 HBA Installation Guide Page 122