H3C UniServer B5700 G3, Руководство пользователя

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Blocked
I/O Policy
I/O policy:
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Direct —Enables the system to read or write data directly from or into a
drive by read operations (excluding read ahead operations) or by write
through operations of the storage controller.
•
Cached —Enables the cache module to process all read and write
operations of the storage controller. Recommended only when
CacheCade 1.1 is configured.
Drive Cache
Drive cache policy:
•
Enable —Enables the controller to write data in the cache of physical
drives during the write process to improve write performance. If this
policy is used without a protection method in place, data will get lost
upon an unexpected power failure.
•
Disable —Disables the controller from writing data in the cache of
physical drives during the write process. If this policy is used, data will
not get lost upon an unexpected power failure, but the write performance
will not as high as when drive caching is enabled.
•
Unchanged —Uses the default drive cache policy.
Disable Background
Initialization
Enabling status of background initialization.
Default Initialization
Default initialization mode:
•
NO .
•
Fast .
•
Full .
Emulation Type
Sector size reported to the OS:
•
Default —Displays 512e (4K) as the sector size as long as one 512e
member drive exists, and displays 512n as the sector size if no 512e
member drive exists.
•
Disable —Displays 512n as the sector size if no 512e member drive
exists.
•
Force —Displays 512e (4K) as the sector size even if no 512e member
drive exists.
Save Configuration Select this option to save the configuration.
8. On the screen as shown in Figure 17 , select Confirm and press Enter . On the dialog box that
opens, select Enabled and press Enter . Then, select Yes and press Enter .