HP D2D User Manual

Table 8 Fan In, Fan Out and job concurrency rules, G1 products (continued)
86D2D2502: 3
D2D2503: 2
D2D2504: 3
Maximum number of
concurrent replication
jobs into a target
appliance
Concurrent target jobs
22D2D2502: 2
D2D2503: 1
D2D2504: 2
Maximum number of
concurrent replication
jobs from a source
appliance
Concurrent source
jobs
NOTE: A minimum WAN bandwidth of 2Mbit/s is required for each replication job to ensure
that it completes successfully.
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 StoreOnce Backup System. The
HP StoreOnce Backup System in Office A is being used by the host server for backup and restore
and the shares and libraries that have been configured on it are being replicated to matching
shares and libraries on the HP StoreOnce Backup System in Office B. A replication license is
required only for the HP StoreOnce Backup System in Office B. That license covers all
Replication-Target shares and libraries on Appliance B.
Figure 10 Active to Passive replication example
Active to Active example
In the following example there are again two offices, each with an HP StoreOnce Backup System.
The HP StoreOnce Backup System in Office A is being used by the host server for backup and
restore and all Replication-Source libraries and shares are being replicated to matching
Replication-Target libraries and shares on the HP StoreOnce Backup System in Office B. However,
there is also a single host backing up to six cartridges on another library on the HP StoreOnce
Backup System in Office B. Two of those cartridges are configured to replicate to a Replication-Target
26 Replication

HP D2D Specifications

General

Brand	HP
Model	D2D
Category	Storage
Language	English