Answer
Possible reasons
Actions
No
Compatible firmware revision supporting
Remote Snap is not running on each system
used for replication.
Perform the following actions on each system used for replication:
l
In the SMU, select Maintenance > Firmware.
l
If necessary, obtain and install the controller module firmware,
and activate it to ensure compatibility with other systems.
l
For more information about compatible firmware, see the topic
about updating firmware in the Storage Management Guide.
No
Invalid cabling connection.
(check the cabling for each system)
Verify controller enclosure cabling:
l
Verify use of proper cables.
l
Verify proper cabling paths for host connections.
l
Verify cabling paths between replication ports and switches are
visible to one another.
l
Verify that cable connections are securely fastened.
l
Inspect cables for damage and replace if necessary.
No
A system does not have a pool configured.
Configure each system to have a storage pool.
Table 19 Diagnostics for replication setup: Using Remote Snap feature (continued)
Can you create a replication set?
IMPORTANT Remote Snap must be licensed on all systems configured for replication, and the controller module
firmware must be compatible on all systems licensed for replication.
Answer
Possible reasons
Actions
Yes
System functioning properly.
No action required.
No
On controller enclosures with iSCSI host
interface ports, replication set creation fails
due to use of CHAP.
If using CHAP (Challenge Handshake Authentication Protocol), see
the topics about configuring CHAP and working in replications
within the Storage Management Guide.
No
Unable to create the secondary volume (the
destination volume on the pool to which you
will replicate data from the primary
volume)?
1
l
Review event logs for indicators of a specific fault in a replication
data path component. Follow any recommended actions.
l
Verify valid specification of the secondary volume according to
either of the following criteria:
l
A conflicting volume does not already exist
l
Available free space in the pool
No
Communication link is down.
Review alerts and event logs for indicators of a specific fault in a
host or replication data path component.
1
After ensuring valid licensing, valid cabling connections, and network availability, create the replication set in the SMU using the
Remote Replication actions provided in Provisioning > Volumes > Data Protection > Add Data Protection.
Table 20 Diagnostics for replication setup: Creating a replication set
Can you replicate a volume?
IMPORTANT Remote Snap must be licensed on all systems configured for replication, and the controller module
firmware must be compatible on all systems licensed for replication.
60
Chapter 7
Troubleshooting