SharePoint 承担着文件管理的工作，默认都是将它们以BLOB的数据形式存储在内容数据库当中；当文件大时，就很容易导致数据库容量被这些BLOB数据所快速消耗，而且频繁地对这些大数据量的BLOB数据进行读写访问，很容易在SQL端造成性能瓶颈。 继MOSS2007之后，SharePoint2010和2013可以使用SQL Server 2008及其以上版本提供的Remote Blob Storage (RBS) 这一新特性，可以将BLOB数据存储在文件系统当中或者是存储在其他专门用于存储BLOB数据的服务器上面。
示例采用sql server 2012 数据库。系统 windows 2008R2 SP1 。
- 启用FilesStream：打开Sql server 2012 的“配置工具”，然后打开“Sql Server 配置管理器”,选择“Sql Server 服务”，找到“SQL Server (MSSQLSREVER)”,右击“属性”，找到“FILESSTREAM”栏，操作如图：
- 通过SQL Server Configuration Manager，启用数据库的FileStream特性。然后通过以下语句，设置fielstream的可访问级别：
EXEC sp_configure filestream_access_level, 2 RECONFIGURE - 为SharePoint的内容数据库加增加主密钥
use [WSS_Content] if not exists (select * from sys.symmetric_keys where name = N'##MS_DatabaseMasterKey##') create master key encryption by password = N'输入密码' - 为该内容数据库增加FILESTREAM文件组和文件
use [WSS_Content] if not exists (select groupname from sysfilegroups where groupname=N'RBSFilestreamProvider') alter database [WSS_Content] add filegroup RBSFilestreamProvider contains filestream use [WSS_Content] alter database [WSS_Content] add file (name = RBSFilestreamFile, filename = 'c:\blobstore') to filegroup RBSFilestreamProvider - 安装RBS：可通过直接执行RBS_X64.msi文件来安装程序，官方下载Sql Server2013 RBS.msi
- 通过下面语句检查是否安装成功select * from dbo.sysobjects where name like 'rbs%'
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启用RBS：
$cdb = Get-SPContentDatabase "WSS_Content"$rbss = $cdb.RemoteBlobStorageSettings $rbss.Installed() $rbss.Enable() $pvdName = $rbss.GetProviderNames()[0] $rbss.SetActiveProviderName($pvdName)$rbss.Migrate()//该命令可以将SharePoint内容数据库中原有的BLOB迁移到文件系统中$rbss.MinimumBlobStorageSize = 1048000 //该命令用于设置存于文件系统中的文件最小值，当文件小于该值的时候，将还是照常保存在数据库中。$cdb.Update() -
垃圾回收机制 这篇文章已经说得很好了，可以点击阅读
- 我强调几点：
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通常我们删除文档，并非真的删除，而是保存在SharePoint回收站里，回收站有两层，一层是用户操作，可以删除或者还原，跟PC 电脑差不多；第二层是网站集回收站，一般需要管理员才能操作，这层删除后，文件就不能通过sharepoint 还原了。
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垃圾回收是一个持续缓慢的过程，可以隔段时间查看存放文件的文件夹大小来判断。
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- 卸载RMS
- SharePoint中卸载
$cdb=Get-SPContentDatabase <ContentDbName>$rbs=$cdb.RemoteBlobStorageSettings$rbs.GetProviderNames()$rbs.SetActiveProviderName("")$rbs.Migrate()$rbs.Disable() - 管理员方式运行CMD，启动回收
C:\Program Files\Microsoft SQL Remote Blob Storage 11.0\Maintainer\Microsoft.Data.SqlRemoteBlobs.Maintainer.exe" -connectionstringname RBSMaintainerConnection -operation GarbageCollection ConsistencyCheck ConsistencyCheckForStores -GarbageCollectionPhases rdo -ConsistencyCheckMode r -TimeLimit 120 - 点击RBS.msi安装文件以卸载RBS
- 在数据库中删除RBS
exec mssqlrbs.rbs_sp_uninstall_rbs 0ALTER TABLE [mssqlrbs_filestream_data_1].[rbs_filestream_configuration] DROP column [filestream_value]ALTER TABLE [mssqlrbs_filestream_data_1].[rbs_filestream_configuration] SET (FILESTREAM_ON = "NULL") - 现在你可以删除文件和文件流filegroup:
ALTER DATABASE yourdbname Remove file RBSFilestreamFile;ALTER DATABASE yourdbname REMOVE FILEGROUP RBSFilestreamProvider;
- SharePoint中卸载
Some question about RMB :
QUS:I have other web servers, app servers and db servers, do i need to install the rbs.msi exe on every other server in the farm , or just only the web servers and the app servers. Such as do we run that msiexec command on each server.
ANS: Best recommend is to install on all the servers
QUS:Also how does rbs work for all migrated sites or existing sites which have documents already stored. So if we enable rbs for these sites and for files over 5 mb, would that apply to only new uploaded files over 5mb, or will apply to also already stored over 5mb files.
ANS:
For newly created docs no issue, docs over 5MB would automatically move
For previous docs, run below commands once you set the "minimum blob storage"
$cdb = Get-SPContentDatabase –WebApplication <URL>
$rbss = $cdb.RemoteBlobStorageSettings
$rbss.Migrate()
QUS:Also does shredded storage impact the files sizes been uploaded as while, such if we configure files to be uploaded over 5 mb, will this apply to the files over this limit or does the files have to be much larger than 5 MB, such 8 or 9 mb have the rbs applied to them.
https://blogs.technet.microsoft.com/pramodbalusu/2011/07/08/rbs-and-sharepoint-2010/
