Cisco Cisco Data Mobility Manager Guida Introduttiva
Cisco MDS 9222i Data Mobility Manager Appliance
At-A-Glance
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Product Highlights
The Cisco
®
MDS 9222i Data Mobility Manager (DMM)
Appliance is a SAN fabric-based appliance that uses
software on the Cisco MDS 9222i Multiservice Modular
Switch to enable movement of blocks of data from a
source storage device to a destination storage device.
These storage devices may be heterogeneous.
software on the Cisco MDS 9222i Multiservice Modular
Switch to enable movement of blocks of data from a
source storage device to a destination storage device.
These storage devices may be heterogeneous.
Typically the Cisco DMM is enabled through a separate
end-user software license. In the Cisco MDS 9222i DMM,
this feature is enabled by default for 6 months, after which
the license can be renewed. The default feature set of
the Cisco MDS 9222i, including SAN extension features,
is available in this appliance and requires no additional
license. For more information about the Cisco MDS
9222i switch and features, see
end-user software license. In the Cisco MDS 9222i DMM,
this feature is enabled by default for 6 months, after which
the license can be renewed. The default feature set of
the Cisco MDS 9222i, including SAN extension features,
is available in this appliance and requires no additional
license. For more information about the Cisco MDS
9222i switch and features, see
.
The Cisco MDS DMM uses the Cisco MDS 9222i switch
and can be introduced transparently without the need to
reconfigure or rewire the existing SAN infrastructure, and
it can be enabled or disabled using software control from
the configuration GUI. No configuration is required on the
host as the host initiators do not know that the Cisco DMM
service is inserted. Similarly, no reconfiguration is needed
on the target as the target also does not know that the
Cisco DMM service is inserted in the SAN. There is also
no need for any SAN-based configuration such as zoning
or virtual SAN (VSAN) configuration. Although the best-
practice recommendation is that the card be placed in the
switches to which the targets are connected, the network
designer can install the card in any switch in the SAN.
and can be introduced transparently without the need to
reconfigure or rewire the existing SAN infrastructure, and
it can be enabled or disabled using software control from
the configuration GUI. No configuration is required on the
host as the host initiators do not know that the Cisco DMM
service is inserted. Similarly, no reconfiguration is needed
on the target as the target also does not know that the
Cisco DMM service is inserted in the SAN. There is also
no need for any SAN-based configuration such as zoning
or virtual SAN (VSAN) configuration. Although the best-
practice recommendation is that the card be placed in the
switches to which the targets are connected, the network
designer can install the card in any switch in the SAN.
This transparent insertion of service makes moving data
from an existing storage device to a new storage device
during upgrades, consolidation, or removal of existing
storage devices easy.
from an existing storage device to a new storage device
during upgrades, consolidation, or removal of existing
storage devices easy.
The Cisco MDS DMM is competitively priced and offers
enterprise-class capabilities. The Cisco MDS DMM is an
online data migration solution (nondisruptive insertion)
that requires no reconfiguration of existing SANs (no host-
based agents) and is centrally managed across heteroge-
neous storage devices.
enterprise-class capabilities. The Cisco MDS DMM is an
online data migration solution (nondisruptive insertion)
that requires no reconfiguration of existing SANs (no host-
based agents) and is centrally managed across heteroge-
neous storage devices.
Features and Benefits
•
Exceptional flexibility and scalability:
The main
component of the Cisco MDS DMM runs on the
Cisco MDS 9222i switch. Neither the host initiator nor
the target array needs to be directly connected to
the card. Cisco MDS DMM does not require rewiring
or reconfiguration of existing SANs, thereby enabling
online migration of block data with little downtime.
Enhanced scalability can be achieved by transpar-
ently adding the Cisco MDS 9222i DMM to the
switching fabric.
Cisco MDS 9222i switch. Neither the host initiator nor
the target array needs to be directly connected to
the card. Cisco MDS DMM does not require rewiring
or reconfiguration of existing SANs, thereby enabling
online migration of block data with little downtime.
Enhanced scalability can be achieved by transpar-
ently adding the Cisco MDS 9222i DMM to the
switching fabric.
•
Online data migration:
Server application downtime
was one of the most important factors considered in
defining the Cisco MDS DMM strategy. Prolonged
periods of downtime are difficult to schedule
because application availability is increasingly
crucial to business success. The Cisco MDS DMM is
designed to provide transparent online data migra-
tion. The existing storage will be available to the
server applications when the switch performs the
data migration. During migration, the read operations
sent from the server are serviced from the existing
storage, and the write operations are mirrored across
both existing and new storage.
defining the Cisco MDS DMM strategy. Prolonged
periods of downtime are difficult to schedule
because application availability is increasingly
crucial to business success. The Cisco MDS DMM is
designed to provide transparent online data migra-
tion. The existing storage will be available to the
server applications when the switch performs the
data migration. During migration, the read operations
sent from the server are serviced from the existing
storage, and the write operations are mirrored across
both existing and new storage.
•
Deployment flexibility:
The Cisco MDS DMM is
designed to perform data migration without any
additional layer of virtualization between the server
and the storage. The virtualization-free design of the
Cisco MDS DMM increases deployment flexibility
with a nondisruptive SAN rollout that does not require
SAN rewiring or reconfiguration.
additional layer of virtualization between the server
and the storage. The virtualization-free design of the
Cisco MDS DMM increases deployment flexibility
with a nondisruptive SAN rollout that does not require
SAN rewiring or reconfiguration.
•
High performance:
The Cisco MDS DMM reduces
server CPU utilization during data migration.
Utilization of server CPU cycles for data migration
reduces application performance. For example, in
server-based migrations using a volume manager,
the server I/O bandwidth is utilized to move data
from existing to new storage with the involvement of
the server CPU. The Cisco MDS 9222i DMM offloads
the data movement function to the SAN and frees the
server CPU cycles for use by applications.
Utilization of server CPU cycles for data migration
reduces application performance. For example, in
server-based migrations using a volume manager,
the server I/O bandwidth is utilized to move data
from existing to new storage with the involvement of
the server CPU. The Cisco MDS 9222i DMM offloads
the data movement function to the SAN and frees the
server CPU cycles for use by applications.
•
Synchronous and asynchronous migration:
The
Cisco MDS DMM can migrate data both synchro-
nously and asynchronously. Data can be migrated
asynchronously to remote data centers over FCIP
or Dense Wavelength Division Multiplexing (DWDM)
connectivity.
nously and asynchronously. Data can be migrated
asynchronously to remote data centers over FCIP
or Dense Wavelength Division Multiplexing (DWDM)
connectivity.
•
Comprehensive security and availability:
Because
the Cisco MDS DMM runs on the Cisco MDS 9222i
switch, it inherits all the basic capabilities of the
Cisco MDS 9222i platform such as security using
role-based access control (RBAC), required during
data migration and high availability. RBAC allows the
SAN administration functions to be partitioned by
user and role to help ensure secure operation and
configuration of the SAN.
switch, it inherits all the basic capabilities of the
Cisco MDS 9222i platform such as security using
role-based access control (RBAC), required during
data migration and high availability. RBAC allows the
SAN administration functions to be partitioned by
user and role to help ensure secure operation and
configuration of the SAN.
•
VSAN support:
The Cisco MDS DMM reduces
disruption of the existing production environment.
The Cisco MDS DMM is an online process and does
not require any rewiring or reconfiguration of zones
or VSANs.
The Cisco MDS DMM is an online process and does
not require any rewiring or reconfiguration of zones
or VSANs.
•
The Cisco MDS DMM transparently interoperates
with existing VSANs, SAN extensions, Inter-VSAN
Routing (IVR), etc. in a heterogeneous SAN environ-
ment.
with existing VSANs, SAN extensions, Inter-VSAN
Routing (IVR), etc. in a heterogeneous SAN environ-
ment.