How large are Forefront Endpoint Protection 2010 Client Definition Downloads

http://social.technet.microsoft.com/Forums/en-US/FCSNext/thread/c0415d19-8833-4ca7-b733-212b43106a77

질문 :

I've got a few WAN links that clients traverse to get to the SCCM Site server (WSUS) for definitions and I need to know if the definition downloads are large enough to warrant setting up downstream WSUS servers in the remote locations.

Architecture: SCCM 2007 R3, Single Primary Site utilizing Software Updates in SCCM, FEP 2010

Thanks

답변 :

We reset the definition updates through a process we call ‘re-base’ – currently once a month as part of the engine release
Today there are 4 types of packages which can be used to update FEP clients

• Full (~55MB)
  The full signature set (called the base) + any signatures since the last engine release (delta)Most recent engine
• Delta (ranges from ~200KB to ~5MB)
  Contains the incremental signatures added since the last engine release (rebase).
• Binary Delta Engine (BDE) (ranges from ~2MB to ~15MB)
  Binary diff of the previous base and engine with current base and engine plus the current incremental delta of signatures
• Binary Delta Delta (BDD) (ranges from ~100KB to ~1MB)
  BDD package is different than Delta package since it will offer differential content from the previous release. Hence only new content is offered to the user.
  All three package types are available on MU
  Only Full packages are available on the Download Center
  Internal detection logic allows each client to download the smallest package size available
  The more up-to-date the client, the smaller package that client needs to download.

So:

• First install or really out-dated (>2 engine releases behind) => Full package
• Older signatures, old engine => BDE package
• signature > 36h, current engine => delta package
• signature < 36h, current engine => bdd package

hope this helps,

Kris

• Proposed As Answer byStefan SchörlingMVPMonday, February 14, 2011 9:43 PM
• Marked As Answer byAray66 Monday, February 14, 2011 10:47 PM