Replication Deployment Strategies; Active To Passive Example; Fan In, Fan Out And Job Concurrency Rules - HP StorageWorks D2D100 - Backup System User Manual

• An HP D2D 41xx Target Appliance can run 16 incoming replication jobs concurrently; a Source
Appliance can run four outgoing replication jobs.
Table 3 Fan In, Fan Out and job concurrency rules
Appliance Fan Out
Appliance Fan In
Library Fan Out
Library Fan In
Concurrent target
jobs
Concurrent source
jobs

Replication deployment strategies

There are many deployment strategies; the following three are perhaps the most typical:
• Active to Passive
Active to Active
•
• Many to One

Active to Passive example

In the following example there are two offices, each with an HP D2D Backup System. The HP D2D
Backup System in Office A is being used by the host server for backup and restore and the libraries that
have been configured on it are being replicated to matching libraries on the HP D2D Backup System in
Office B. A replication license is required only for the HP D2D Backup System in Office B. That license
covers all Replication-Target libraries on Appliance B.
HP D2D 250x
Maximum
number of Target
appliances
supported by one
Source appliance
Maximum number
of Source
appliances
supported by one
Target appliance
Maximum number
of Target libraries
to which a Source
library may be
mapped
Maximum number
of Source libraries
to which a Target
library may be
mapped
Maximum number
of concurrent
incoming
replication jobs
Maximum number
of concurrent
outgoing replication
jobs
HP D2D 400x
2 4
6 16
1 1
1 4
3 8
1
4
D2D Backup System HP D2D2503
HP D2D 41xx
4
24
1
4
16
4
65