Rich Olivieri , SharePoint Architect, MicroLink LLC [email_address]
Redundancy and Availability <ul><li>“ Redundancy  refers to the use of multiple servers in a load-balanced environment for...
SharePoint 2007 Redundancy Application Server Role Can be Redundant? Web Role Yes Query Role Yes Index Service Role No* Wi...
Number of Nines http://technet.microsoft.com/en-us/library/cc748824.aspx Acceptable uptime percentage  Downtime  per day  ...
Availability Requirements <ul><li>Recovery Time Objective (RTO).  RTO is the allowable duration that an application can be...
Cannot Connect to …. <ul><li>The dreaded “Cannot connect to the database server…or configuration database…” </li></ul><ul>...
 
 
References <ul><li>Database Mirroring Best Practices and Performance Considerations. Microsoft(r) TechNet. [Online] March ...
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Moss 2007 High Availability

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Moss 2007 High Availability

  1. 1. Rich Olivieri , SharePoint Architect, MicroLink LLC [email_address]
  2. 2. Redundancy and Availability <ul><li>“ Redundancy refers to the use of multiple servers in a load-balanced environment for any of several purposes, such as to improve farm performance, to scale out to accommodate additional users, and to improve availability.” </li></ul><ul><li>“ Availability is a more specialized concept that refers to a multiple-server environment that is designed to accept connections and operate normally even when one or more of the servers in the farm are not operational.” </li></ul><ul><li>- http://technet.microsoft.com/en-us/library/cc263044.aspx </li></ul>
  3. 3. SharePoint 2007 Redundancy Application Server Role Can be Redundant? Web Role Yes Query Role Yes Index Service Role No* Windows SharePoint Services 3.0 Search No Excel Calculation Services Yes
  4. 4. Number of Nines http://technet.microsoft.com/en-us/library/cc748824.aspx Acceptable uptime percentage Downtime per day Downtime per month Downtime per year 95 72.00 minutes 36 hours 18.26 days 99 14.40 minutes 7 hours 3.65 days 99.9 86.40 seconds 43 minutes 8.77 hours 99.99 8.64 seconds 4 minutes 52.60 minutes 99.999 0.86 seconds 26 seconds 5.26 minutes
  5. 5. Availability Requirements <ul><li>Recovery Time Objective (RTO). RTO is the allowable duration that an application can be down. </li></ul><ul><li>Recovery Point Objective (RPO). RPO is the amount of data loss that the customer can tolerate. </li></ul><ul><li>-http://technet.microsoft.com/en-us/library/cc531332.aspx </li></ul>
  6. 6. Cannot Connect to …. <ul><li>The dreaded “Cannot connect to the database server…or configuration database…” </li></ul><ul><li>SQL Clustering – availability at the SQL instance </li></ul><ul><li>SQL Mirroring – availability at the database. </li></ul><ul><li>* Mirroring available with SQL 2005 SP 1 </li></ul>
  7. 9. References <ul><li>Database Mirroring Best Practices and Performance Considerations. Microsoft(r) TechNet. [Online] March 10, 2006. [Cited: 10 09, 2008.] http://www.microsoft.com/technet/prodtechnol/sql/2005/technologies/dbm_best_pract.mspx. </li></ul><ul><li>Case Study of High Availability for SharePoint using Database Mirroring (white paper). Microsoft TechNet. [Online] April 2008. [Cited: September 22, 2008.] http://technet.microsoft.com/en-us/library/cc531332.aspx. </li></ul><ul><li>Microsoft. How to transfer the logins and the passwords between instances of SQL Server 2005. Microsoft Help and Support. [Online] July 11, 2006. [Cited: October 13, 2008.] http://support.microsoft.com/kb/918992/. </li></ul><ul><li>Microsoft. Using Database Mirroring with Office SharePoint Server and Windows SharePoint Services. Microsoft TechNet. [Online] July 24, 2008. [Cited: October 13, 298.] http://technet.microsoft.com/en-us/library/cc262910.aspx. </li></ul><ul><li>Talmage, Ron. Database Mirroring in SQL Server 2005. Microsoft TechNet. [Online] April 1, 2005. [Cited: October 14, 2008.] http://www.microsoft.com/technet/prodtechnol/sql/2005/dbmirror.mspx. </li></ul><ul><li>Microsoft. Setting Up Login Accounts for Database Mirroring. MSDN: SQL Server Developer Center. [Online] September 2007. [Cited: October 14, 2008.] http://msdn.microsoft.com/en-us/library/ms366346(SQL.90).aspx. </li></ul><ul><li>Curry, Ben and English, Bill. Microsoft Office SharePoint Server 2007 Best Practices. Redmond: Microsoft Press, 2008. </li></ul><ul><li>Plan for redundancy (Office SharePoint Server). Microsoft TechNet. [Online] July 15, 2008. [Cited: September 22, 2008.] http://technet.microsoft.com/en-us/library/cc263044.aspx. </li></ul><ul><li>Plan for availability (Office SharePoint Server). Microsoft TechNet. [Online] September 5, 2008. [Cited: September 22, 2008.] http://technet.microsoft.com/en-us/library/cc748824.aspx. </li></ul>

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