File Replication Service Stephanie B. Doakes and Edward Gomes Directory Services and Security Micros

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File Replication Service Stephanie B. Doakes
and Edward Gomes Directory Services and
SecurityMicrosoft Corporation
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Objectives

• Describe and understand how File Replication
  service (FRS) works
• Describe how FRS interoperates with LMrepl
• Describe how FRS interoperates with Distributed
  File System (DFS)

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FRS Product Goals

• Reliable
• Robust
• Scalable
• Efficient
• Secure
• Administration

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Key Terms and Definitions

• Replication
• Replica
• Replica set
• Initial master
• Staging directory

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Key Terms and Definitions (2)

• Outbound partner
• Inbound partner
• Version number
• Change Journal

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Introduction to File Replication Service

• Definition of FRS
• What it is used for?
• Design of the File Replication service

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Replicating SYSVOL

• SYSVOL share
• Netlogon share
• System policies (down-level clients)
• Group policies
• Logon and logoff scripts

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Replicating DFS

• Domain-based DFS only
• Explicitly enabled
• Why replication may show Not Available
• Replication schedule
• Replication is ON or OFF

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Change Propagation
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How FRS Works

• Last Writer Wins algorithm
• Uses Active Directory to manage configuration
  information
• Authenticated remote procedure call
• Change Journal

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Detailed Operation

• Change journal monitored
• Staging directory
• Change notifications
• Deletion from staging directory
• Replica set topology (unidirectional)
• SYSVOL KCC
• DFS DFS snap-in
• Inbound/outbound partners

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Outbound Replica
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Inbound Replica
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FRS Tables

• Connection table
• Inbound log
• Outbound log
• Version vector
• ID table

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FRS Startup

• FRS configuration retrieved from Active Directory
• 8 DS polling short intervals
• DS polling long interval

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Maintaining a Mixed Environment

• FRS replaces LMRepl in Microsoft Windows 2000
• Microsoft Windows NT 4.0 Directory Replication
  service
• Windows 2000 File Replication service
• Lbridge.cmd resource kit utility

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Customizing FRS

• File and/or folder filters for exclusion
• Encrypting File System (EFS)
• File names starting with a tilde ()
• Files with .bak or .tmp extensions
• Reparse points
• Scheduling replication intersite

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Scheduling Replication

• Intersite
• Intrasite only for DFS
• On SYSVOL
• Site link
• On DFS
• Site link
• Connection object
• Replica set

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Restoring Replicated Files

• Backing up replicated files/folders
• Non-authoritative restore
• Authoritative restore
• Restoring files on a domain controller
• Non-authoritative
• Authoritative
• Restoring files on a member server

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Pre-staging DFS Data
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Tuning Recommendations

• Setting up the DFS topology
• Distributing disk usage
• Disabling logging
• Maintaining throughput
• Adjusting the size of the staging directory
• Using FRS with remote storage
• Sizing limits

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Troubleshooting FRS

• Free disk space
• Staging directory size
• Test file
• IP connectivity
• Services Administrative Console

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Troubleshooting FRS (2)

• RPC connectivity
• Replication schedule
• File locked
• Excluded file
• FRS logging files

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Troubleshooting FRS (3)

• NTFRSUTL utility
• Command repadmin /showreps
• NTFRS logs
• Ports
• Event logs
• Culprits of excessive replication

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FRS White Papers and Other Documents

• File Replication Service
• http//www.microsoft.com/windows2000/techinfo/res
  kit/samplechapters/dsdh/dsdh_frs_tkae.asp
• Windows 2000 File Replication Service Update
• http//www.microsoft.com/WINDOWS2000/downloads/re
  commended/q265365/default.asp

Note that the URLs should be entered as one line
they are wrapped here for readability.
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FRS White Papers and Other Documents (2)

• TCP and UDP Port Assignments
• http//www.microsoft.com/WINDOWS2000/techinfo/res
  kit/samplechapters/cnfc/cnfc_por_simw.asp
• Active Directory Branch Office Planning Guide
• http//www.microsoft.com/windows2000/techinfo/pla
  nning/activedirectory/branchoffice/default.asp

Note that the URLs should be entered as one line
they are wrapped here for readability.
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FRS Knowledge Base Articles

• Q221105 FRS Polling of the AD May Delay DFS or
  SYSVOL Replication for 10 Minutes or More
• Q229928 FRS File and Folder Filters Apply to
  New Files Only
• Q221112 NT File Replication Service Log File
  Size and Verbosity Settings

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FRS Knowledge Base Articles (2)

• Q221093 How to Relocate the NTFRS Jet Database
  and Log Files
• Q220938 Description of the FRS Replication
  Protocol, Notification, and Schedule for DFS
  Content
• Q224512 FRS Builds Full-Mesh Replication
  Topology for Replicated DFS ROOT and Child
  Replicas

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FRS Knowledge Base Articles (3)

• Q224554 Mapping Events in NTFRS Service Logs to
  Threads in Performance Monitor
• Q240942 Active Directory DNSHostName Property
  Does Not Include Subdomain
• Q250545 SYSVOL Directory Is Slow to
  Synchronize, Delays Creation of SYSVOL Share and
  Domain Controller Registration

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FRS Knowledge Base Articles (4)

• Q250978 FRS May Create Duplicate File IDs on
  High-Performance Computers, Preventing Full
  Replication of Sysvol and DFS Replicas
• Q251250 NTFRS Event ID 13557 Is Recorded When
  Duplicate NTDS Connection Objects Exist

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FRS Knowledge Base Articles (5)

• Q257338 Troubleshooting Missing SYSVOL and
  NETLOGON Shares on Windows 2000 Domain
  Controllers
• Q264607 Event ID 13507, 13552, and 13555
  Messages Occur in the Domain Controller
• Q264822 File Replication Service Stops
  Responding When Staging Area Is Full
• Q266657 Windows 2000 Directory Service Agent
  Fails to Maintain Exclusive Control of Port 389

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FRS Knowledge Base Articles (6)

• Q271363 Files in Single Instance Storage
  Replicate When Running NTBackup Against a
  Replicated DFS Share
• Q272279 How to Troubleshoot the File
  Replication Service and the Distributed File
  System
• Q274578 WMI Cannot Maintain Temporary Event
  Filter Registration

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