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Limity w SharePoint 2010

13 grudnia 2011

W tym linku można przejrzeć informacje na temat ograniczeń wielkości bazy danych, ilości wpisów w listach, bibliotekach dokumentów itp.: http://technet.microsoft.com/en-us/library/cc262787.aspx 

Można doczytać też więcej na temat planowania i skalowania rozwiązania SharePoint 2010 dla firm: http://technet.microsoft.com/en-us/library/ff608068.aspx

Podstawowe wielkości, o które pyta większość osób skopiowałem z pierwszego linka, bez tłumaczenia z angielskiego:

Content database limits

The following table lists the recommended guidelines for content databases.

Limit Maximum value Limit type Notes
Content database size (general usage scenarios) 200 GB per content database Supported We strongly recommended limiting the size of content databases to 200 GB, except when the circumstances in the following rows in this table apply.

If you are using Remote BLOB Storage (RBS), the total volume of remote BLOB storage and metadata in the content database must not exceed this limit.

Content database size (all usage scenarios) 4 TB per content database Supported Content databases of up to 4 TB are supported when the following requirements are met:

  • Disk sub-system performance of 0.25 IOPs per GB. 2 IIOPs per GB is recommended for optimal performance.
  • You must have developed plans for high availability, disaster recovery, future capacity, and performance testing.

You should also carefully consider the following factors:

  • Requirements for backup and restore may not be met by the native SharePoint Server 2010 backup for content databases larger than 200 GB. It is recommended to evaluate and test SharePoint Server 2010 backup and alternative backup solutions to determine the best solution for your specific environment.
  • It is strongly recommended to have proactive skilled administrator management of the SharePoint Server 2010 and SQL Server installations.
  • The complexity of customizations and configurations on SharePoint Server 2010 may necessitate refactoring (or splitting) of data into multiple content databases. Seek advice from a skilled professional architect and perform testing to determine the optimum content database size for your implementation. Examples of complexity may include custom code deployments, use of more than 20 columns in property promotion, or features listed as not to be used in the over 4 TB section below.
  • Refactoring of site collections allows for scale out of a SharePoint Server 2010 implementation across multiple content databases. This permits SharePoint Server 2010 implementations to scale indefinitely. This refactoring will be easier and faster when content databases are less than 200 GB.
  • It is suggested that for ease of backup and restore that individual site collections within a content database be limited to 100 GB. For more information, see Site collection limits.

For more information on SharePoint Server 2010 data size planning, see Storage and SQL Server capacity planning and configuration (SharePoint Server 2010).

Important:
Content databases of over 4 TB, except for use in document archive scenarios (described in the row below), are not recommended. Upgrading of site collections within these content databases is likely to be very difficult and time consuming.

It is strongly recommended that you scale out across multiple content databases, rather than exceed 4 TB of data in a single content database.

Content database size (document archive scenario) No explicit content database limit Supported Content databases with no explicit size limit for use in document archive scenarios are supported when the following requirements are met:

  • You must meet all requirements from the “Content database size (all usage scenarios)” limit earlier in this table, and you should ensure that you have carefully considered all the factors discussed in the Notes field of that limit.
  • SharePoint Server 2010 sites must be based on Document Center or Records Center site templates.
  • Less than 5% of the content in the content database is accessed each month on average, and less than 1% of content is modified or written each month on average.
  • Do not use alerts, workflows, link fix-ups, or item level security on any SharePoint Server 2010 objects in the content database.
Note:
Document archive content databases can be configured to accept documents from Content Routing workflows.

For more information about large-scale document repositories, see Estimate Performance and Capacity Requirements for Large Scale Document Repositories (http://technet.microsoft.com/en-us/library/ff608068.aspx), and the Typical large-scale content management scenarios section of the article Enterprise content storage planning (SharePoint Server 2010).

Content database items 60 million items including documents and list items Supported The largest number of items per content database that has been tested on SharePoint Server 2010 is 60 million items, including documents and list items. If you plan to store more than 60 million items in SharePoint Server 2010, you must deploy multiple content databases.
Site collections per content database 2,000 recommended

5,000 maximum

Supported We strongly recommended limiting the number of site collections in a content database to 2,000. However, up to 5,000 site collections in a database are supported.

These limits relate to speed of upgrade. The larger the number of site collections in a database, the slower the upgrade.

The limit on the number of site collections in a database is subordinate to the limit on the size of a content database that has more than one site collection (200 GB). Therefore, as the number of site collections in a database increases, the average size of the site collections it contains must decrease.

Exceeding the 2,000 site collection limit puts you at risk of longer downtimes during upgrades. If you plan to exceed 2,000 site collections, we recommend that you have a clear upgrade strategy, and obtain additional hardware to speed up upgrades and software updates that affect databases.

To set the warning level for the number of sites in a content database, use the Windows PowerShell cmdlet Set-SPContentDatabase with the -WarningSiteCount parameter. For more information, see Set-SPContentDatabase.

Remote BLOB Storage (RBS) storage subsystem on Network Attached Storage (NAS) Time to first byte of any response from the NAS cannot exceed 20 milliseconds Boundary When SharePoint Server 2010 is configured to use RBS, and the BLOBs reside on NAS storage, consider the following boundary.

From the time that SharePoint Server 2010 requests a BLOB, until it receives the first byte from the NAS, no more than 20 milliseconds can pass.

Site collection limits

The following table lists the recommended guidelines for site collections.

Limit Maximum value Limit type Notes
Web site 250,000 per site collection Supported The maximum recommended number of sites and subsites is 250,000 sites.

You can create a very large total number of Web sites by nesting subsites. For example, in a shallow hierarchy with 100 sites, each with 1,000 subsites, you would have a total of 100,000 Web sites. Or a deep hierarchy with 100 sites, each with 10 subsite levels would also contain a total of 100,000 Web sites.

Note: Deleting or creating a site or subsite can significantly affect a site’s availability. Access to the site and subsites will be limited while the site is being deleted. Attempting to create many subsites at the same time may also fail.

Site collection size Maximum size of the content database Supported A site collection can be as large as the content database size limit for the applicable usage scenario. For more information about the different content database size limits for specific usage scenarios, see the Content database limits table in this article.

In general, we strongly recommend limiting the size of site collections to 100 GB for the following reasons:

  • Certain site collection actions, such as site collection backup/restore or the Windows PowerShell cmdlet Move-SPSite, cause large Microsoft SQL Server operations which can affect performance or fail if other site collections are active in the same database. For more information, see Move-SPSite.
  • SharePoint site collection backup and restore is only supported for a maximum site collection size of 100 GB. For larger site collections, the entire content database must be backed up. If multiple site collections larger than 100 GB are contained in a single content database, backup and restore operations can take a long time and are at risk of failure.

List and library limits

The following table lists the recommended guidelines for lists and libraries. For more information, see Designing large lists and maximizing list performance (SharePoint Server 2010).

Limit Maximum value Limit type Notes
List row size 8,000 bytes per row Boundary Each list or library item can only occupy 8,000 bytes in total in the database. 256 bytes are reserved for built-in columns, which leaves 7,744 bytes for end-user columns. For details on how much space each kind of field consumes, see Column limits.
File size 2 GB Boundary The default maximum file size is 50 MB. This can be increased up to 2 GB, however a large volume of very large files can affect farm performance.
Documents 30,000,000 per library Supported You can create very large document libraries by nesting folders, or using standard views and site hierarchy. This value may vary depending on how documents and folders are organized, and by the type and size of documents stored.
Major versions 400,000 Supported If you exceed this limit, basic file operations—such as file open or save, delete, and viewing the version history— may not succeed.
Items 30,000,000 per list Supported You can create very large lists using standard views, site hierarchies, and metadata navigation. This value may vary depending on the number of columns in the list and the usage of the list.
Rows size limit 6 table rows internal to the database used for a list or library item Supported Specifies the maximum number of table rows internal to the database that can be used for a list or library item. To accommodate wide lists with many columns, each item may be wrapped over several internal table rows, up to six rows by default. This is configurable by farm administrators through the object model only. The object model method is SPWebApplication.MaxListItemRowStorage.
Bulk operations 100 items per bulk operation Boundary The user interface allows a maximum of 100 items to be selected for bulk operations.
List view lookup threshold 8 join operations per query Threshold Specifies the maximum number of joins allowed per query, such as those based on lookup, person/group, or workflow status columns. If the query uses more than eight joins, the operation is blocked. This does not apply to single item operations. When using the maximal view via the object model (by not specifying any view fields), SharePoint will return up to the first eight lookups.
List view threshold 5,000 Threshold Specifies the maximum number of list or library items that a database operation, such as a query, can process at the same time outside the daily time window set by the administrator during which queries are unrestricted.
List view threshold for auditors and administrators 20,000 Threshold Specifies the maximum number of list or library items that a database operation, such as a query, can process at the same time when they are performed by an auditor or administrator with appropriate permissions. This setting works with Allow Object Model Override.
Subsite 2,000 per site view Threshold The interface for enumerating subsites of a given Web site does not perform well as the number of subsites surpasses 2,000. Similarly, the All Site Content page and the Tree View Control performance will decrease significantly as the number of subsites grows.
Coauthoring in Microsoft Word and Microsoft PowerPoint for .docx, .pptx and .ppsx files 10 concurrent editors per document Threshold Recommended maximum number of concurrent editors is 10. The boundary is 99.

If there are 99 co-authors who have a single document opened for concurrent editing, any user after the 100th user sees a „File in use” error and have to view a read-only copy.

More than 10 co-editors will lead to a gradually degraded user experience with more conflicts and users will have to go through more iterations to get their changes to upload successfully.

Security scope 1,000 per list Threshold The maximum number of unique security scopes set for a list should not exceed 1,000.

A scope is the security boundary for a securable object and any of its children that do not have a separate security boundary defined. A scope contains an Access Control List (ACL), but unlike NTFS ACLs, a scope can include security principals that are specific to SharePoint Server. The members of an ACL for a scope can include Windows users, user accounts other than Windows users (such as forms-based accounts), Active Directory groups, or SharePoint groups.

 

 

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