Chapter 3: Subsystem Monitoring
after a few seconds.
Note that restoring default will not affect the existing RAID configurations of disk drives.
Table
CAUTION!
The Restore NVRAM Default push button is a function that carries some risks. Firmware restoration will not destroy the existing logical drive configurations; however, if the existing logical drives cannot be adequately associated with host ID/LUNs after firmware default restoration, data loss or inconsistencies might occur.
There is a
Listed below are the necessary procedures that should be completed before using this button:
1.Before pressing this button to restore firmware defaults, it is highly advised to make a list of the existing ID/LUN mapping information. You will need the list for restoring ID/LUN mapping after restoring defaults. Default restoration will erase the ID/LUN mapping associations (e.g., which logical drive is associated with which host ID/LUN), and it is necessary to restore the host ID/LUN mapping after firmware default restoration in order to access data on the previously configured arrays.
2.Some of the latest firmware updates may be incompatible with the firmware currently running on your subsystem. These updates may require restoring firmware defaults before firmware upgrade can actually take place. Before using the button, it is highly advised to practice the following:
Stop host I/Os, Backup your data,
Make a list of host ID/LUN mapping information for future references.
You may also jot down the configured parameters such as the performance preferences, specific stripe sizes, etc.
3.The no. 3 condition that requires restoring defaults is when an administrator forgets the password configured to control the access to a RAID subsystem. Before pushing this button, also practice the steps listed above. You can access array information even without a password.
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