Block Protocols Enhancements; Iscsi Radius Support; Support For Data Motion For Volumes - IBM N Series Manual

Block protocols enhancements

This Data ONTAP release includes a number of new features and
enhancements for block protocol enhancements. This section provides an
overview of these features and enhancements.
For more information about these features, see the IBM System Storage N series
Data ONTAP 8.0 7-Mode Block Access Management Guide for iSCSI and FC.
v "iSCSI RADIUS support"
v "Support for Data Motion for Volumes"
v "VMware VAAI features for ESX hosts support" on page 39
v "igroup scalability limits" on page 39

iSCSI RADIUS support

Data ONTAP 8.0 7-Mode introduces support for iSCSI RADIUS, which enables
you to centrally manage iSCSI initiator authentication.
RADIUS still uses CHAP to authenticate iSCSI initiators, but it enables you to
manage the authentication process from a central RADIUS server, rather than
manage them manually on each storage system. In larger SAN environments,
this can greatly simplify iSCSI initiator management and provide added
security.
In addition to simplifying CHAP password management, RADIUS also
reduces the load on your storage system. The RADIUS client service runs on
the storage system and communicates with the RADIUS server and initiators,
but most of the authentication processing is handled by the RADIUS server.
For more information, refer to the Data ONTAP 8.0 7-Mode Block Access
Management Guide for iSCSI and FC.

Support for Data Motion for Volumes

Data ONTAP 8.0.1 7-Mode or later supports IBM N series Data Motion for
Volumes, which enables you to non-disruptively move a volume from one
aggregate to another within the same controller for capacity utilization,
improved performance, and to satisfy service-level agreements. In a SAN
environment, FlexVol volumes and the LUNs in the volumes are moved
non-disruptively from one aggregate to another.
The volume move occurs in three phases: setup phase, data copy phase, and
cutover phase.
For more information about the volume move, see Data ONTAP 8.0 7-Mode
Block Access Management Guide for iSCSI and FC.
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IBM System Storage N series: Data ONTAP 8.0.4 7-Mode Release Notes