dotnetpathak

Site object

Guidelines for acceptable performance

Notes

Site
collection

50,000
per Web application

Total
farm throughput degrades as the number of site collections increases.

Web
site

250,000
per site collection

You
can create a very large total number of Web sites by nesting the subsites.
For example, 100 sites, each with 1000 subsites, is 100,000 Web sites. The
maximum recommended number of sites and subsites is 125 sites with 2,000
subsites each, for a total of 250,000 sites.

Subsite

2,000
per Web site

The
interface for enumerating subsites of a given Web site does not perform well
as the number of subsites surpasses 2,000.

Document

5
million per library

You
can create very large document libraries by nesting folders, 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.

Item

2,000
per view

Testing
indicates a reduction in performance beyond two thousand items. Using
indexing on a flat folder view can improve performance.

Document
file size

50MB
(2GB max*)

File
save performance is proportional to the size of the file. The default
maximum is 50 MB. This maximum is enforced by the system, but you can change
it to any value up to 2 GB.

List

2,000
per Web site

Testing
indicates a reduction in list view performance beyond two thousand entries.

Field
type

256
per list

This
is not a hard limit, but you might experience list view performance
degradation as the number of field types in a list increases.

Column

2,000
per document library4,096 per list

This
is not a hard limit, but you might experience library and list view
performance degradation as the number of columns in a document library or
list increases.

Web
Part

50
per page

This
figure is an estimate based on simple Web Parts. The complexity of the Web
Parts dictates how many Web Parts can be used on a page before performance
is affected.

People object

Guidelines for acceptable performance

Notes

Users
in groups

2
million per Web site

You
can add millions of people to your Web site by using Microsoft Windows
security groups to manage security instead of using individual users.

User
profile

5
million per farm

This
number represents the number of profiles which can be imported from a
directory service, such as Active Directory, into the people profile store.

Security
principal

2,000
per Web site

The
size of the access control list is limited to a few thousand security
principals (users and groups in the Web site).

Search object

Guidelines for acceptable performance

Notes

Search
indexes

One
per SSPMaximum of 20 per farm

Office
SharePoint Server 2007 supports one content index per SSP. Given that we
recommend a maximum of 20 SSPs per farm, a maximum of 20 content indexes is
supported. Note that an SSP can be associated with only one index server and
one content index. However, an index server can be associated with multiple
SSPs and have a content index for each SSP.

Indexed
documents

50,000,000
per content index

Office
SharePoint Server 2007 supports 50 million documents per index server. This
could be divided up into multiple content indexes based on the number of
SSPs associated with an index server.

Content
sources

500
per SSP*

This
is a hard limit enforced by the system.

Start
Addresses

500
per content source*

This
is a hard limit enforced by the system.

Alerts

1,000,000
per SSP

This
is the tested limit.

Scopes

200
per site

This
is a recommended limit per site. We recommend a maximum of 100 scope rules
per scope.

Display
groups

25
per site

These
are used for a grouped display of scopes through the user interface.

Crawl
rules

10,000
per SSP

We
recommend a maximum 10,000 crawl rules irrespective of type.

Keywords

15,000
per site

We
recommend a maximum of 10 Best Bets and five synonyms per keyword.

Crawled
properties

500,000
per SSP

These
are properties that are discovered during a crawl.

Managed
properties

100,000
per SSP

These
are properties used by the search system in queries. Crawled properties are
mapped to managed properties. We recommend a maximum of 100 mappings per
managed property.

Authoritative
pages

200
per relevance level

This
is the maximum number of sites in each of the four relevance levels.

Results
removal

100

This
is the maximum recommended number of URLs that should be removed from the
system in one operation.

Crawl
logs

50,000,000

Number
of individual log entries in the crawl log.

Logical architecture
object

Guidelines for acceptable performance

Notes

Shared
Services Provider (SSP)

3
per farm (20 per farm maximum)

Zone

5*
per farm

The
number of zones defined for a farm is hard coded to 5.

Web
application

99
per SSP

This
limit includes the number of Web applications on child farms consuming
resources on this SSP.

Internet
Information Services (IIS) application pool

8
per Web server

Maximum
number is determined by hardware capabilities.

Site
collection

50,000
per Web application

Content
database

100
per Web application

Site
collection

50,000
per database

Physical object

Guidelines for acceptable performance

Notes

Index
servers

1
per SSP*

Application
servers running Excel Calculation Services

No
limit

Query
servers

No
limit

Because
100 content databases are supported for each query server, the number of
query servers required per farm is based on the number of content databases
in the farm. For example, if there are 500 content databases in your farm,
you will need at least 5 query servers.

Web
server/database server ratio

8
Web servers per database server

The
scale out factor is dependent upon the mix of operations.

Web
server/domain controller ratio

3
Web servers per domain controller

Depending
on how much authentication traffic is generated, your environment may
support a greater number of Web servers per domain controller.