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Exl393 exchange 2013 architecture schnoll (rm221)

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  • 1. L7 LB Ex Ex Ex CAS MBX Ex HT MBX C C C H H H SAN • • Role differentiation through manual configuration Backups and hardware solutions for “reliability” 2000/2003 • • Separate roles for deployment & segmentation Support cheaper storage 2007 • • • Separate HA solution per role Introduction of the DAG Support for Hybrid deployments 2010
  • 2. Forefront Online Protection for Exchange Internal Network E Phone system (PBX or VOIP) H External SMTP servers M U Mobile phone Web browser Layer 7 LB C Outlook (remote user) Outlook (local user) Line of business application
  • 3. E Exchange 2010 SP3 Exchange 2007 SP3 RU10 C C H U M
  • 4. E Exchange 2010 C M C M
  • 5. Building Blocks efficiency simplicity inter-op isolation
  • 6. EWS protocol MRS proxy protocol SMTP Protocols, Server Agents MRS MRSProxy EWS Assistants RPC CA Business Logic Transport MailItem XSO CTS Storage Custom WS E2010 Banned ESE Server1 (Vn) File system EWS Assistants RPC CA MailItem XSO CTS Other APIs Content index Store MRS MRSProxy Transport Other APIs Content index Store ESE Server2 (Vn+1) File system
  • 7. Exchange 2010 Architecture L7 LB Client Access Hub Transport, Unified Messaging Mailbox Exchange 2013 Architecture L4 LB AuthN, Proxy, Re-direct Client Access AuthN, Proxy, Re-direct Protocols, API, Biz-logic Assistants, Store, CI Protocols, Assistants, API, Biz-logic Store, CI Mailbox
  • 8. Outlook Web App Outlook EAS EAC PowerShell POP/IMAP SMTP SIP Load Balancer IIS HTTP Proxy Client Access POP , IMAP HTTP Redirect SMTP UM SMTP POP IMAP , IIS RpcProxy RPS RPC CA OWA, EAS, EWS, ECP OAB , POP IMAP Transport Mailbox MDB MailQ UM SIP + RTP
  • 9. Sue mail.contoso.com (somewhere in NA) DNS Resolution Round-Robin between # of VIPs VIP #1 DAG Sue DNS Resolution via Geo-DNS Round-Robin between # of VIPs VIP #2 VIP #3 DAG (traveling in APAC) VIP #4
  • 10. External SMTP External SMTP Front End Transport service SMTP Receive SMTP Send Protocol Agents Hub Selector SMTP from MBX 2013 SMTP to MBX 2013
  • 11. Element Exchange 2007 Exchange 2010/2013 Physical Contiguity (ESE) Poor physical contiguity of leaf pages. Hence many, small-sized IOs (1 for each page) Excellent physical contiguity of leaf pages. So fewer, large-sized IOs, spanning N pages Logical Contiguity (Store) Headers for each folder kept in separate table. So many, small-sized IOs spread over many tables Single message table for an entire mailbox. (Property blobs used to store actual message properties, large blob in LV) Several messages/page, fewer large IOs to retrieve message properties in view) Temporal Contiguity (View) All views and indexes updated each time a mail is delivered. So many, small-sized IOs spread over time Views and indexes updated only when they are accessed by user. So fewer, large-sized IOs are done together
  • 12. E14 E15 0.70 0.60 0.50 0.40 0.65 0.30 0.20 0.10 0.16 0.00 4 3.5 3 2.5 2 1.5 1 0.5 0 LoadGen Simulation – 10 DBs/1000 users Two profiles: Online and Cached (Default/Optimized) Perf gains are not free – increase in CPU and memory RPC Average Latency DB IOPS/Mailbox Mcycles per RPC packet Store Memory per Mailbox (MB) Online Mode | Cached Mode • • • • 48 | 76% reduction in disk IOPS 18 | 41% reduction in Average RPC Latency 17 | 34% increase in CPU per RPC processed ~4x increase in Store memory overhead CPU increase is factor of optimizing for two-socket servers and moving to multi-process architecture Enables us to scale out using multi-core processors without having to cross processor bridge to access shared L2 cache Some CPU overhead comes from using managed code Memory increase is also factor of multi-processor architecture Most of the memory is in small and large object heaps in .NET primarily used for object allocation and cleanup
  • 13. DB IOPS/Mailbox 1 0.8 ~95.5% Reduction! 0.6 0.4 0.2 0 Exchange 2003 Exchange 2007 Exchange 2010 IOPS/Mailbox Exchange 2013
  • 14. SMTP from FET or the Mailbox Transport service on other servers SMTP to FET or Mailbox Transport service on other servers Transport Service SMTP Receive Protocol Agents Categorizer SMTP Send Routing Agents Submission Queue Delivery Queue Pickup/Replay Directory SMTP from Mailbox Transport Submission service SMTP to Mailbox Transport Delivery service
  • 15. SMTP from Transport Service SMTP to Transport Service Mailbox Transport service SMTP Receive SMTP Send Hub Selector Store Driver Deliver Store Driver Submit Mailbox Deliver Agents Mailbox Assistants Mailbox Transport Delivery Mailbox Submit Agents Mailbox Transport Submission MAPI MAPI Mailbox Database
  • 16. Scott Schnoll Principal Technical Writer scott.schnoll@microsoft.com http://aka.ms/schnoll schnoll

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