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Elastic Pools

For many of the businesses and applications which are having the ability to form one data and dial performance up or down on the demand is enough when the pattern is comparatively predictable. Unpredictable usage patterns will make it hard to manage costs and our business model. Elastic pools are designed to resolve the matter where it allocates the performance resource to pool instead of private data where the collective performance resources of the pool rather than single database performance.

Service tiers of Azure

Azure SQL database offers three services which are designed for the different types of applications:

  1. General purpose
  2. Business critical
  3. Hyper scale
  • General reason: This general service tier which has been sketched for the common workloads offers budget oriented balanced compute and also storage options.
  • Business critical: This service tier has been designed for the applications with the high transaction rate and also the lowest latent I/O which will offer the highest resilience to the failure by making use of the several isolated replicas.
  • Hyper scale: This service tier has been designed for very large database and the ability to auto scale storage and scale to compute the fluidity.

Service tier comparison:

Resource TypeGeneral-purposeHyperscaleBusiness-critical
SQL data1 to 80 Vcore1 to 80 Vcore1 to 128 Vcore
SQL managed instance4,8,16, 24 vcoreN/A4,8,16, 24 vcore
allremote storagetiered remotelocal SSD

Data and log storage:

The following are the factors that can affect the storage usage getting used and log files. They apply to general purpose and also business-critical tiers.

  1. Each of the computer size which supports maximum data size with the default of 32GB
  2. When we configure maximum data size.
  3. We can select any maximum data size in 1 to GB incrementally.
  4. In the business-critical service tier temp db will share local SSD storage with the data and data log files.
  5. Maximum storage of the size for SQL which is managed instance should be specified in multiple of 32 GB.

Use of elastic pools:

Many professions and also applications that are able to produce a single database and also dial performance up or down are been based upon the demand which is enough especially if usage patterns will be relatively predictable. Unpredictable usage patterns which are hard to manage the costs and also the business model.

Elastic pools are been sketched which will solve the problem where we can distribute the performance resources to the pool rather than the single database. We contribute to the massive performance and also the resources of the pool rather than for the single database performance.

By using the elastic pools we don’t have to keep the focus on the database performance which will be up and down as demand for the resources keeps on changing, and the pool database will absorb the performance resources but it will not be exceeding the limit of the pool so the cost remains predictable even if the single database usage don’t do it.

We can modify and delete the data from the table to the pool and also measure the application from a handful of the data from the table to thousands and within the budget which can be controlled.

We can also control the minimum and maximum resources which are available to the database in the pool and also make sure that no database in the pool will make use of the pool resources.

Blend single database with pooled database

We can mix the single data from the table with the elastic pools and also change the service of the single data of the table and the elastic pools will be able to adapt to our situation.


  1. What is elastic pool? Explain
  2. What are service ties? Explain briefly
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