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Cautions and restrictions for booting from EMC storage array
153
Configuring a Boot Device on an EMC Storage Array
Cautions and restrictions for booting from EMC storage array
CAUTION
!
If Linux loses connectivity long enough, the disks 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 manpage 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 could crash a system booting from an
EMC storage array.
Symmetrix-specific cautions and restrictions
◆ Lost connection to Symmetrix storage array (pulled or damaged
cable connection).
◆ Symmetrix service and upgrade procedures, such as on-line
Symmetrix microcode upgrades and/or configuration changes.
◆ Symmetrix director failures, including failed lasers.
◆ Symmetrix storage array power failure.
◆ Storage area network service and upgrade procedures, such as
firmware upgrades or hardware replacements.
VNX series- or CLARiiON-specific cautions and restrictions
◆ Lost connection to VNX series or CLARiiON storage system
(pulled or damaged cable connection).
◆ VNX service and upgrade procedures