DataDirect Networks EF2800, User Manual

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DataDirect Networks EF2800 FC RAID Storage System User Guide (V 1.0)
S e t t i n g U p t h e E F 2 8 0 0
4.3.3 Putting an SM Offline
You can put an SM module offline. This gracefully takes the SM module
offline, which halts I/0 and makes sure that any data in the write-back
cache is written to disk. Use this option when you need to replace an
SM module.
C
AUTION
: To ensure continuous availability of the system, be sure that
the other SM module is online. For more information, see Section
7.1
,
"Displaying SAM Status Information" on page 105
.
If the other SM module is not online, resolve the problem or replace it
before putting the SM module offline. For more information, refer to
Chapter
10 , "Troubleshooting and Problem Solving" on page 141 .
To put an SM offline:
1. From SAM, select
Manage EF2800
>
Manage Modules
. The
Modules Online/Offline page displays.
2. Click the
Module Link
of the SM module you want to put offline.
The options available for the selected module display below. The
options available depend on the module selected and its status.
3. Select
Put SM Offline
.
4. Click
Perform this Operation
to put the selected module offline.
The Status LED for the offline module turns red and SAM shows
the module as offline.
4.3.4 Putting an SM Online
If you used the “Put SM Offline” function and did not remove the SM
module, you can put the SM module back online. You can also use the
Put SM Online function when an SM is offline for any reason.
N
OTE
: You can only put the other SM module online. You cannot put
the SM module that SAM is connected to online.