Tape lun statistics, Figure 388 – Brocade Network Advisor SAN User Manual v12.3.0 User Manual
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Tape LUN statistics
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FIGURE 388
Encryption Target Tape LUNs dialog box - Setting tape LUN read ahead and write early
4. In the Enable Write EarlyAck and Enable Read Ahead columns, when the table is populated,
you can set these features as desired for each LUN:
•
To enable write early for a specific tape LUN, select Enable Write Early Ack for that LUN.
•
To enable read ahead for a specific LUN, select Enable Read Ahead for that LUN.
•
To disable write early for a specific tape LUN, deselect Enable Write Early Ack for that LUN.
•
To disable read ahead for a specific LUN, deselect Enable Read Ahead for that LUN.
5. Click OK.
6. Commit the changes on the related crypto target container:
a. Select Configure > Encryption from the menu task bar to display the Encryption Center
dialog box. (Refer to
b. Select a group, switch, or engine from the Encryption Center Devices table that contains
the storage device to be configured, then select Group/Switch/Engine > Targets from the
menu task bar.
NOTE
You can also select a group, switch, or engine from the Encryption Center Devices table,
then click the Targets icon.
c. Select the appropriate crypto target container, then click Commit.
Tape LUN statistics
This feature enables you to view and clear statistics for tape LUNs. These statistics include the
number of compressed blocks, uncompressed blocks, compressed bytes and uncompressed bytes
written to a tape LUN.
The tape LUN statistics are cumulative and change as the host writes more data on tape. You can
clear the statistics to monitor compression ratio of ongoing host I/Os.
The encryption management application allows you to select tape LUN from either a tape LUN
container through the Encryption Targets dialog box, or from the Target Tape LUNs dialog box.