Quantum DXi6900, Руководство пользователя

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Chapter 6: Replication
Replication
Quantum DXi6900 User’s Guide 135
your data is sent to the target system only when a scheduled or manual replication job occurs. If you
do not regularly and frequently replicate your data as described in Step 6 above, it cannot be restored
at a later time.
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If a replication is not scheduled or run manually, data is still continuously sent to the target once
replication is configured on the source DXi. This can potentially fill up the target DXi.
Note: To limit the amount of network bandwidth used for replication, enable a constant throttle (see
Enabling System Throttling on page 274 ), or schedule replication throttling (see Scheduling Replication
Throttling on page 284 ).
Task Overview: Setting Up and Performing Directory/File or Cartridge Based Replication
To automatically replicate files or cartridges from a source system and immediately recover them for use on
a target system:
1. Perform the following steps on the target system:
a. Add the source system to the list of allowed replication sources (see Adding a Replication Source
on page 275 ).
b. Create a new share or partition with deduplication enabled (see Adding a NAS Share on page 207
or Adding a VTL Partition on page 222 ).
c. Enable Directory/File or Cartridge Based Replication for the new share or partition and specify the
Sync ID (see or Configuring Directory/File or Cartridge Based Replication on page 141 ).
2. Perform the following steps on the source system:
a. Specify the target system that will receive replicated data (see Adding a Replication Target on
page 270 ).
b. Create a new share or partition with deduplication enabled (see Adding a NAS Share on page 207
or Adding a VTL Partition on page 222 ).
c. Enable Directory/File or Cartridge Based Replication for the new share or partition and specify the
Sync ID (see Configuring Directory/File or Cartridge Based Replication on page 141 ).
A file is automatically replicated when it is closed or a period of time after it is modified. A cartridge is
automatically replicated after it is unmounted. After replication, the replicated files or cartridges are
immediately available on the target system. There is no need to recover the share or partition to make the
files or cartridges available.
Caution: Cartridge barcodes for all source systems that are replicating to the same target must be
unique.
Note: To limit the amount of network bandwidth used for replication, enable a constant throttle (see
Enabling System Throttling on page 274 ), or schedule replication throttling (see Scheduling Replication
Throttling on page 284 ).