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Chapter 11 System Management
11.2 Functions in the Action Area for System
ETERNUS Web GUI User’s Guide
Copyright 2013 FUJITSU LIMITED P2X0-1090-10ENZ0
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• Storage System Group Name
Input the storage system group name.
The storage system group combines the key management device (Key Management Machine)
name that is managed by the user with the key groups. The storage system group name
corresponds to "Device Group Name", which is managed in the key server.
The following input conditions apply:
- Up to 16 alphanumeric characters and symbols (underscore "_")
- The first letter must be an alphabetic character
• Security Level
Select the security level of the key group from "High" or "Low".
"Security Level" indicates the handling level when application of the SED key to the target RAID
group fails. If the key for the relevant RAID group cannot be obtained from the key server due to a
communication error and the SEDs that configure the RAID group are changed to hot spares or
changed to new SEDs due to failure or maintenance, the ETERNUS DX Disk storage system performs
operations according to the selected security level.
- High
Rebuilding to hot spares for which the key cannot be changed after SED failure is not performed.
The RAID group loses its redundancy (" Exposed" or " Partially Exposed" (for High Reliabil-
ity (RAID6))).
When SED maintenance is being performed, replacing a SED with a new SED for which the key
cannot be changed does not complete successfully. If this action is performed, the status of the
new SED changes to " Not Exist".
When communication between the key server and the ETERNUS DX Disk storage system returns
to normal and the key can be obtained, the SED status changes to normal. Rebuilding to the SED
for which the status changed to normal is performed after the key is changed. Note that
"Modifying" may be displayed for the key status for few minutes even though the SED key has
already changed. After changing the key, maintenance of the SEDs is complete.
- Low
Rebuilding or maintenance is performed by using the common key if changing of the key in the
key server fails due to a network error.
Even if the security level is changed from "High" to "Low", the rebuilding process does not start
immediately after the level is changed. Rebuilding processes start after the ETERNUS DX Disk
storage system recognizes that changing of the security level and the key is complete.
• Recovery Mode
Select the recovery mode of the key group from "Auto" or "Manual".
The recovery mode is a method to recover locked (*1) RAID groups or SEDs after communication
with the key server is resolved. For RAID groups in locked status, " SED Locked" is displayed. For
SEDs in locked status, " Not Exist" is displayed.
*1: A blocked status that occurs when the key of the RAID groups cannot be obtained.
Do not change the storage system group name after the key status changes to "Normal". The key
status can be checked on the [Key Group] screen. Refer to "11.1.5.1 Key Group" (page 723)
for
details.