xStack Storage Management Center Software User’s Guide 95
Table 6-2. Summary of Battery Failure Options
Option Description
Ignore Battery Status Select this option only if you are not concerned about potential data loss or corruption in
the event of a battery failure.
Stop buffering I/O in cache Safest mode that prevents loss of data if a power failure occurs, but with reduced
performance.
Table 6-3. Summary of Controller Failure Options
Option Description
Ignore Controller Status Allows the system to continue caching any incoming data when one of the controllers in a
dual-controller system has failed. Selecting this item will continue to use "write-back"
caching in the surviving controller.
Stop buffering I/O in cache Forces the system to use "write-through" mode (with no caching) when one of the
controllers in a dual-controller system has failed. Selecting this item will reduce
performance, but ensure the integrity of any data that is written to any volumes.
6.2.12 Configuring User Accounts (Settings Tab)
Using the User Accounts button in the Settings tab, you can change the default admin login
password and set up admin and user accounts.
Before you start configuring the xStack Storage, we recommend that you use the Accounts
button to:
Enhance the security of the xStack Storage Management Center by changing the default
login password for the admin user.
Set up the other administrators and/or users who will be using the xStack Storage
Management Center to manage the xStack Storage.
Thereafter, you can use the User Accounts button in the Settings tab to edit user accounts
in case you need to change a user’s login password or delete user accounts for users who will
no longer be managing the xStack Storage. For more information about adding, modifying,
and deleting user accounts, see section 3.4.
It is recommended that you accept the default setting Stop buffering I/O in
cache, which allows host I/O to continue, although with lower performance.
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