A
document is the basic unit of Image Server. Documents are stored in PN files
created corresponding to VolBlocks. Document operations provided are
Document Addition
– Document is added to the specified volumeVolume.
VolBlock for the document is
determined internally. Image Cabinet generates a dDocument
indexIndex
for every document. The combination of dDocument
indexIndex
and volumeVolume
indexIndex
is a unique key. This key is known as ISIndexIndex.
Document Retrieval – Image
Server has provision for both complete and partial retrieval of documents.
Document can be retrieved page wise also. By specifying the dDocument indexIndex and the volumeVolume indexIndex document can be
fetched from iImage sServer both as a
complete document as well as page wise.
Document Deletion – Deletion
of document from iImage sServer is two-step
process.
In first step document is only marked for deletion.
This facilitates recovery of document after deletion i.e. document can be
salvaged. The documents marked for deletion
are deleted permanently when compact VolumeVolume operation is
performed. After compaction documents cannot be recovered.
Document Replication
– Document can be replicated over multiple sSites.
This serves dual purpose of backup and fast access.
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To add a document into SMS. |
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To mark document(s) for deletion in SMS. |
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To retrieve a document from SMS. |
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To replicate a document on a specified |
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To get the size of a document. |
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To salvage a document that |