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Data reduction can dramatically improve the performance of Lotus Notes and Domino. This is best illustrated in the following user examples:
Example 1 – Intra-office email
If a Domino server is centralized, emails transferred between co-workers in the same office are sent across the WAN, wasting bandwidth and causing an unnecessary delay. With Silver Peak’s Network Memory, while the request transparently goes back to the server, actual email content is intercepted and delivered locally.
Consider what happens when an email is sent to 200 people in 10 offices. Prior to Silver Peak, at least 200 copies of this email will traverse the WAN. With Silver Peak, the first ‘instance’ of data is compressed and then sent across each WAN link (10 total links). All remaining emails on the same link are delivered instantly via Network Memory, and do not traverse the network. The number of traversals can be reduced from 200 to 10, and compressed by a factor of 4, yielding an 80x improvement in performance.
Example 2 – Email forwarding and replies
When users in one office forward emails to users in other offices or reply to emails sent from different locations, they are generating significant amounts of WAN traffic. Much of this traffic is repetitive information. Local Silver Peak NX appliance can detect duplicate data and send instructions to remote appliances to deliver this information locally. If the email or its attachments have been slightly modified, only the “delta” is sent across WAN. This saves significant amounts of bandwidth and ensures LAN-like application performance.
By working at the Network layer of the ISO stack, the Silver Peak solution does not alter client/server communications in any way. Therefore, existing Domino authentication schemes remain in place, and Silver Peak ensures 100% data coherency across an enterprise. Assuming content is being served in real-time (as opposed to from a local database that is not replicated), Silver Peak eliminates the risk of delivering stale or inaccurate information to remote users.
Silver Peak appliances perform data reduction across all enterprise applications. Information sent via one application (e.g., a file downloaded from an Intranet using HTTP), is compared to information sent using other applications (e.g., an email attachment). If there is a match, the duplicate information is always delivered locally. As a result, Notes and Domino users can experience significant performance improvements through data reduction even if the data was never previously sent via email.
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