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Horizontal partitioning allows the automatic distribution of entries of a namespace among a number of DSAs. This allows load sharing. Horizontal partitioning is particularly useful where there is one large flat namespace that needs to be distributed across multiple DSAs.
A normal router DSA can now send operations to an HP DSA "set". The router determines to which HP DSA to send based on the details in the operation (for example, the base DN of the search, or the DN of the update), chains it on to the specific HP DSA and then waits for a response.
The administrator does not need to manually allocate entries to each DSA because part of the DN is hashed to allocate entries to DSAs.
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