Support For Designated Range Of Ports For Ndmp Data Connections; If Volumes With Deduplication Exceed The Maximum Supported Size; Nearstore License Is Not Required For Deduplication; Maximum Concurrent Deduplication Operations Supported - IBM N Series Manual

Note: The SnapMirror destination system should be using a Data ONTAP
release that supports SnapMirror network compression.
SnapMirror network compression compresses the data stream on the source
system, transfers the compressed data stream over the network, and
uncompresses the data stream on the destination system before writing it to
disk. It helps in optimizing network bandwidth utilization between
SnapMirror source and destination systems. This feature can be especially
useful for connections that have relatively low bandwidth, such as WAN
connections.
For more information about SnapMirror network compression, see the Data
ONTAP 8.0 7-Mode Data Protection Online Backup and Recovery Guide.

Support for designated range of ports for NDMP data connections

Data ONTAP 8.0.1 and later releases supports designated range of ports that
can be used for NDMP data connections in response to
NDMP_DATA_LISTEN and NDMP_MOVER_LISTEN operations. Therefore,
you can perform data migration by using the ndmpcopy command and
three-way tape backups even in environments where the source and
destination networks are separated by a firewall.

If volumes with deduplication exceed the maximum supported size

Volumes continue to be online when they exceed the maximum supported
size. For more information about the maximum volume size allowed for
different storage systems, with and without deduplication, see the Data
ONTAP 8.0 7-Mode Storage Management Guide.

NearStore license is not required for deduplication

Starting with Data ONTAP 8.0.1 7-Mode, you do not have to enable the
NearStore personality license to use deduplication.

Maximum concurrent deduplication operations supported

You can run a maximum of eight concurrent deduplication operations on all
storage systems.

Prerequisite for backing up data to tape using NDMP services

Starting from Data ONTAP 8.0 7-Mode, NDMP users must have the
login-ndmp capability for successfully authenticating NDMP sessions.
A predefined role named backup, by default, has the login-ndmp capability.
To provide a user with the login-ndmp capability, the backup role can be
assigned to the group to which the user belongs. However, when a group is
assigned the backup role, all users within the group get the login-ndmp
capability. Therefore, it is best to group all NDMP users in a single group that
has the backup role.
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IBM System Storage N series: Data ONTAP 8.0.4 7-Mode Release Notes