Appendix C - Configuring Replication
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7700 Flash Storage Platform Installation Guide 7.6.3.x
530-0267-00 Rev 02
Replication is typically between 7700 FSP Controllers. If you have configured all storage that is
assigned to 7700 FSP Controller A, and this is configured for replication, 7700 FSP Controller B
may be configured as an HA failover partner for 7700 FSP Controller A. In this case, the 7700 FSP
Controller B
rep0
port must be configured and included in the 7700 FSP storage cluster HA
configuration.
An HA configuration will require that the virtual IP and monitor IP addresses for all Concerto-based
device
rep0
ports be assigned. If two Concerto-based 7700 FSP Controllers are used for primary
storage, and are also
not
configured as part of an HA pair, then replication may be configured
between these two Concerto-based 7700 FSP Controllers.
Using Symphony and CLI commands, you can configure primary and replica LUNs from the primary
7700 FSP Controller. Symphony must have access to both 7700 FSP Controller primary
management interfaces.
Symphony will use its secure access to each 7700 FSP Controller to collect LUN and storage pool
information automatically. Replica enabling commands are directed to the primary 7700 FSP
Controller. The primary replication device must have access to the replica device management
interface to complete the replication set up.
7700 FSP Controller Preparation
The replication interface
rep0
is not configured by the current
configuration jump-start
or
initial_config.exp
scripts. Replication interfaces and inter-controller routing must be
configured using Concerto-based CLI commands at each 7700 FSP Controller.
Prerequisites, Tools, and Skills
This section lists the recommended experience, prerequisites, tools, and skills that are needed for
configuring the replication interfaces in a 7700 FSP storage cluster, which include:
•
Familiarity using the Concerto command line interface commands (
isscli
).
•
Experience with basic text editing using vi or nano via CLI commands (for example, being able
to perform edit, insert, write, and quit operations).
•
Experience using basic shell tool commands to perform operations (for example, using
grep
,
cat
, and
ifconfig
).
•
Understanding IP subnets. You can use the IP Subnet Mask Calculator at this Web site for
reference purposes:
http://www.subnet-calculator.com/
•
Experience performing network speed conversions based on measurements from the
customer network, such as GBps (gigabytes per second) and Gbps (gigabits per second)
found in replication operations (for example, 16Gbps = 1000 Mbps = 125000 KBps = 0.125
GBps = 125 MBps). You can use this Web site for reference purposes:
http://www.checkyourmath.com/convert/data_rates/
•
Understanding storage conversions (for example, converting storage capacities like MiB/
mebibyte and GiB/gibibyte to MB/megabyte and GB/gigabyte).
