MCT USE ONLY. STUDENT USE PROHIBITED Planning for Performance and Capacity 3-57 Database Size guideline Read/write characteristics Description State 1 GB–1 terabyte Variable This database stores temporary state information for InfoPath Forms Service instances, the chart Web Part, and Visio Service instances. Note: The read/write characteristics of the database should influence your decision about storage in areas such as RAID configuration. Different physical disk types and different RAID configurations can provide different read and write performance. For example, RAID 5 typically has poor write performance when compared with RAID 1. Question: Which RAID type is typically recommended for transaction log storage of SQL Server databases? Additional Reading For more information about database types and descriptions in SharePoint 2010, see http://go.microsoft.com/fwlink/?LinkID=200862&clcid=0x409. MCT USE ONLY. STUDENT USE PROHIBITED 3-58 Designing a Microsoft® SharePoint® 2010 Infrastructure Designing Capacity for Content Databases Key Points The following process describes how to estimate the storage that you require for content databases, without considering log files: 1. Calculate the expected number of documents. D represents this value in the formula at the end of this list. 2. Estimate the average size of the documents that you will be storing. S represents this value in the formula at the end of this list. 3. Estimate the number of list items in the environment. L represents this value in the formula at the end of this list. List items can be more difficult to estimate than documents, particularly if there is no existing SharePoint 2010 implementation to base this on. As a general guideline, estimate three times the number of documents. 4. Determine the approximate number of versions. Estimate the average number of versions that any document in a library will have. V represents this value in the formula at the end of this list. The value of V must be at least 1 (for a single, current version). MCT USE ONLY. STUDENT USE PROHIBITED Planning for Performance and Capacity 3-59 5. Use the following formula to estimate the size of your content databases: Database size = ((D × V) × S) + (10 KB × (L + (V × D))) The value of 10 KB in the formula is a rough estimate of the amount of metadata that SharePoint Server 2010 requires. You should give and calculate all size values in KB to ensure consistency in the calculations. Note: The features that you are using will determine how you calculate the number of documents. If you are migrating from a current system, it may be easier to extrapolate your current growth rate and usage. If you are creating a new system, review your existing file shares or other repositories and estimate based on that usage rate. Additional Reading For more information about storage and SQL Server capacity planning and configuration in SharePoint 2010, see http://go.microsoft.com/fwlink/?LinkID=200863&clcid=0x409. MCT USE ONLY. STUDENT USE PROHIBITED 3-60 Designing a Microsoft® SharePoint® 2010 Infrastructure Designing Capacity for Search Databases and Index Partitions Key Points The implementation of search in a SharePoint farm can have significant impact on storage requirements. When a server that hosts the crawl role performs a crawl on content, the following events occur: • Search entries are created or updated in an index partition, which is held on crawl and query servers. • Metadata about crawled items is added to the Search Service property database. • The Search Service crawl database is updated with information about the crawl state. In addition, the search administration database stores crawl rules. Based on the corpus size, crawl and index entries can require significant storage. The following table describes the three databases that are associated with the Search Service application, with size and read/write characteristics. MCT USE ONLY. STUDENT USE PROHIBITED Planning for Performance and Capacity 3-61 Database Size guideline Read/write characteristics Description Search Service administration database 1 GB–100 GB Approximately equal This database hosts the Search Service application configuration, the access control list (ACL), and best bets for the crawl component. Every user and administrative action requires access to this database. Search Service crawl database 1 GB–1 terabyte Read-heavy (ratio 3:1) This database stores the state of the crawled data and the crawl history. Search Service property database 1 GB–1 terabyte Write-heavy (ratio 1:2) This database stores information that is associated with the crawled data, including properties, history, and crawl queues. Index Partitions You must also plan for index partition storage on the query servers. Index partitions hold a part of the content index (or the entire content index) against which SharePoint 2010 runs queries to provide search results. You can distribute the index partitions to improve performance. The size of the index and index partitions are determined by the size of the crawled corpus, and they range from 1 GB to 1 terabyte. For general sizing guidelines: • The index may occupy 5 to 10 percent of the crawled corpus size. • The crawl databases may occupy approximately 5 percent of the crawled corpus size. • The property databases may occupy approximately 1.5 percent of the crawled corpus size. Note: The index and search database sizes can vary greatly depending on the type of files that are crawled and the file crawl limit. Note: The index servers build small parts of the index before forwarding these parts to the query servers. The index servers require a small amount of local storage for this process. MCT USE ONLY. STUDENT USE PROHIBITED 3-62 Designing a Microsoft® SharePoint® 2010 Infrastructure Additional Reading For more information about database types and descriptions in SharePoint 2010, see http://go.microsoft.com/fwlink/?LinkID=200864&clcid=0x409. For more information about storage and SQL Server capacity planning and configuration, see http://go.microsoft.com/fwlink/?LinkID=201267&clcid=0x409. MCT USE ONLY. STUDENT USE PROHIBITED Planning for Performance and Capacity 3-63 Planning for Remote BLOB Storage for SharePoint 2010 Key Points BLOBs are data elements that have either of the following characteristics: • Unstructured data with no schema (such as a piece of encrypted data). • A large amount of binary data (many megabytes or gigabytes) that has a very simple schema, such as image files, documents, streaming video, or sound clips. By default, SharePoint 2010 stores BLOBs in the content databases. This can result in a dramatic size increase for the content database and associated storage requirements. SharePoint 2010 with SQL Server 2008 R2 supports remote BLOB storage. With a remote BLOB storage provider, remote BLOB storage can store BLOB data outside the content database on separate storage. The SQL Server 2008 R2 Feature Pack includes a RBS FILESTREAM provider called the local FILESTREAM provider. This provider is able to store BLOBs on separate, local disks. MCT USE ONLY. STUDENT USE PROHIBITED 3-64 Designing a Microsoft® SharePoint® 2010 Infrastructure SQL Server 2008 Enterprise and SQL Server 2008 R2 Enterprise also offer remote BLOB storage without FILESTREAM that can use NAS or DAS storage, and additional third-party remote BLOB storage options may be available. Note: It is important to identify that SharePoint 2010 (rather than SQL Server 2008) supports the use of the remote BLOB storage provider that you want to use. Additional Reading For more information about planning for remote BLOB storage in SharePoint Server 2010, see http://go.microsoft.com/fwlink/?LinkID=200865&clcid=0x409. MCT USE ONLY. STUDENT USE PROHIBITED Planning for Performance and Capacity 3-65 Lab: Planning for Performance and Capacity Exercise 1: Creating a Performance Plan Scenario Having completed the logical architecture planning and service application planning activities, you must now identify the number of WFE servers that are required for the Contoso, Ltd. SharePoint 2010 production farm. There is additional planning information available in the supplied documents. Use these documents to produce your performance plan. The main tasks for this exercise are as follows: 1. Read the supporting information. 2. Complete the Performance worksheet in the Performance and Capacity Planning Worksheet.xlsx file. MCT USE ONLY. STUDENT USE PROHIBITED 3-66 Designing a Microsoft® SharePoint® 2010 Infrastructure f Task 1: Read the supporting information 1. Read the lab scenario. 2. Log on to 10231A-NYC-DC1-03 as CONTOSO\Ed with the password Pa$$w0rd. 3. In the E:\Labfiles\Lab03\Starter folder, read the Performance and Capacity Requirements.docx file. 4. In the E:\Labfiles\Lab03\Starter folder, read the SharePoint 2010 Capacity Planning Excerpt.docx file. 5. In the E:\Labfiles\Lab03\Starter folder, read the information under Workload in the Right-Sizing SharePoint Server 2010 Deployments section of the SPServer2010CapacitySizingOverview.docx file. f Task 2: Complete the Performance worksheet in the Performance and Capacity Planning Worksheet.xlsx file • In the E:\Labfiles\Lab03\Starter\Performance and Capacity Planning Worksheet.xlsx file, complete the details on the Performance worksheet to establish the number of WFE servers that you require. Exercise 2: Creating a Capacity Plan Scenario You now need to plan the storage requirements for Contoso, Ltd. There is additional planning information available in the supplied documents. Use these documents to produce your capacity plan. The main tasks for this exercise are as follows: 1. Read the supporting information. 2. Complete the Capacity worksheet in the Performance and Capacity Planning Worksheet.xlsx file. f Task 1: Read the supporting information 1. Review the lab scenario. . database. Search Service crawl database 1 GB 1 terabyte Read-heavy (ratio 3 :1) This database stores the state of the crawled data and the crawl history. Search Service property database. By default, SharePoint 2 010 stores BLOBs in the content databases. This can result in a dramatic size increase for the content database and associated storage requirements. SharePoint 2 010 with. PROHIBITED 3-62 Designing a Microsoft SharePoint 2 010 Infrastructure Additional Reading For more information about database types and descriptions in SharePoint 2 010 , see http://go .microsoft. com/fwlink/?LinkID =200 864&clcid=0x409.