Users Guide

Chapter 8 Library Managed Encryption
Configuring the Dell Encryption Key Manager (EKM) on the Library
Dell PowerVault ML6000 User’s Guide 157
Differences Between
Manual and Automatic
EKM Path Diagnostics 8
There are two ways to perform EKM Path Diagnostics:
• Using Manual EKM Path Diagnostics on page 157
• Using Automatic EKM Path Diagnostics on page 158
The Manual diagnostics differs from the Automatic diagnostics in the
following ways:
• The Manual diagnostics takes affected partitions offline during the
tests. When the tests complete, the partitions are returned to the
online/offline state they were in before the tests began.
• The Automatic diagnostics does not take partitions offline, but it may
delay moves to tape drives while they are being tested.
• The Manual diagnostics requires that you select one tape drive to use
for the test. Since the test only validates the selected drive, if you
want to test the path for each tape drive, you must run the test
multiple times (once for each drive). To test all servers, you must run
the diagnostics once for each Library Managed Encryption enabled
partition (each server pair is connected to a unique partition and tape
drive). In addition, if the tape drive is not available (it must be
unloaded, ready, and online), the Drive, Path, and Config tests are
not performed.
• The Automatic diagnostics tests every connected EKM server in turn,
and the library selects the tape drive to use for each test. If the
selected tape drive is not available (it must be unloaded, ready, and
online), then the library tries another tape drive that is connected to
the key server until it finds one that is available. If no tape drives
connected to a particular key server are available, then that server is
skipped and the tests are not performed. If a server is skipped for “X”
number of consecutive test intervals (where “X” is configurable on
the Web client), the library generates a RAS ticket. If a tape drive
remains loaded for a long time, it is possible that it will never be
tested. If you want to test a specific tape drive, then you should use
the Manual EKM Path Diagnostics. In particular, if you replace a tape
drive, run the Manual EKM Path Diagnostics.
Using Manual EKM Path
Diagnostics 8
1 Access the EKM Path Diagnostics screen in one of two ways: