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What are the 3 types of SQL database server architecture?
As the below Diagram depicts there are three major components in SQL Server Architecture:
- Protocol Layer.
- Relational Engine.
- Storage Engine.
What is Lun in SQL Server?
A logical unit number (LUN) is, technically, the number used to define a physical device addressed by the SCSI or Fiber Channel protocol. The term is also used to refer to the logical disk that is created on a SAN. These LUN-sized chunks of storage are how the OS sees the storage.
Which architecture does NoSQL follow?
NoSQL follows BASE property. Unlike ACID it is not the set of property but simple guidelines. BA-basic availability, S-soft state and E-eventual consistency. Unlike structured database, data in NoSQL is stored in Key-Value format.
How many LUNs do I need?
In a physical, non-virtualized environment where one server hosts a single application, one LUN is probably adequate for the application and its data. More sophisticated applications require more than one storage LUN, with one LUN for the application components and another for the application’s data files.
How many iscsi LUN per host?
Host operating system limits for SAN configurations
| Parameter | Windows | Linux |
|---|---|---|
| LUNs per host | 255 | 2,048 devices max (where each path to a LUN is a device) |
| Maximum paths from host to LUN | 8 | 24 (max of 2,048 per host) |
| Maximum paths from host to storage solution | 1,024 | 1,024 |
| Max LUN size | 2 TB (MBR) 16 TB (GPT) | 16 TB |
What is client server architecture and its types?
Client-Server Architecture is a distributed system architecture where the workload of client server are separated. Clients are those who request for the services or resources and Server means the resource provider. The server host several programs at its end for sharing resources to its clients whenever requested.
What do you need to know about SQL Server architecture?
1 General Architecture. Client − Where the request initiated. 2 Checkpoints in SQL Server. Automatic − This is the most common checkpoint which runs as a process in the background to make sure SQL Server Database can be recovered in 3 Memory Architecture. 4 Data File Architecture. 5 Log File Architecture.
When to choose a hard drive for SQL Server?
Before you select a disk drive configuration, it is wise to determine your general needs rather than purchasing too few disks and having to upgrade in the near term or purchasing too many disks that are not needed in the long term.
What is the log file architecture in SQL Server?
Log File Architecture 1 The start and end of each transaction. 2 Every data modification (insert, update, or delete). This includes changes by system stored procedures or data definition language (DDL) statements to any table, including system tables. 3 Every extent and page allocation or de allocation. 4 Creating or dropping a table or index.
Why does SQL Server need so much memory?
Typically, an administrator does not have to specify how much memory should be allocated to SQL Server, although the option still exists and is required in some environments. One of the primary design goals of all database software is to minimize disk I/O because disk reads and writes are among the most resource-intensive operations.