HP D2D D2D Best Practices for VTL, NAS and Replication implementations (EH985- - Page 53
Appliance, library and share replication fan in/out - d2d4112 g1
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Appliance, library and share replication fan in/out Each D2D model has a different level of support for the number of other D2D appliances that can be involved in replication mappings with it, and also the number of libraries that may replicate into a single library on the device as follows: Max Appliance Fan out The maximum number of target appliances that a source appliance can be paired with Max Appliance Fan in The maximum number of source appliances that a target appliance can be paired with Max Library Fan in The maximum number of source libraries that may replicate into a single target library on this type of appliance. Max Library Fan out Max Share Fan in Max Share Fan out The maximum number of target libraries that may be replicated into from a single source library on this type of appliance The maximum number of source NAS Shares that may replicate into a single target NAS Share on this type of appliance The maximum number of target NAS Shares that may be replicated into from a single source NAS Share on this type of appliance Max Appliance Fan out Max Appliance Fan in Max Library Fan out Max Library Fan in Max Share Fan out Max Share Fan In D2D2502 G1 2 4 1 1 1 1 D2D2503 G1 2 6 1 1 1 1 D2D2504 G1 2 8 1 1 1 1 D2D400X G1 4 16 1 4 1 1 D2D4112 G1 4 24 1 4 1 1 Max Appliance Fan out Max Appliance Fan in Max Library Fan out Max Library Fan in Max Share Fan out Max Share Fan In D2D2502 G2 2 4 1 1 1 1 D2D2504 G2 2 8 1 1 1 1 D2D4106 G2 4 16 1 8 1 1 D2D4112 G2 4 24 1 8 1 1 D2D4312 and D2D4324 G2 8 50 1 16 1 1 It is important to note that when utilizing a VTL replication Fan-in model (where multiple source libraries are replicated to a single target library), the deduplication ratio may be better than is achieved by each individual source library due to the deduplication across all of the data in the single target library. However, over a large period of time the performance of this solution will be slower than configuring individual target libraries because the deduplication stores will be larger and therefore require more processing for each new replication job. 53