16 Feb 2016

Elastic Block Storage

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1. Difference between General Purposed IOPS and Provisional IOPS in performance

    1. In Snapshot to Volume,

         General Purpose IOPS  Min size = 1GB  to Max 16384GB

         Provisional IOPS  Min size = 4GB  to Max 16384GB    ( increased performance)

 

2. Difference Between

General Purpose (SSD)
Provisioned IOPS (SSD)
Magnetic      

 

  General Purpose (SSD) Provisioned IOPS (SSD Magnetic      
Use cases Small to medium sized databases

Large database workloads, such as:

  • MongoDB

  • Microsoft SQL Server

  • MySQL

  • PostgreSQL

 Scenarios where the lowest storage cost is important
Volume size 1 GB - 16 TiB 4 GiB - 16 TiB 1 GiB - 1 TiB
Maximum throughput 160 MB/s 320 MiB/s 40-90 MiB/s
IOPS up to 10,000 IOPS up to 20,000 IOPS maximum Averages 100 IOPS

 

 

3. Difference between Snapshot and Volume

AWS S3 Storage

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S3 provides Developers and IT team with secure, durable, highly-scalable object storage.

Object base Storage.

Data is spread across multiple device

 

* DB and OS cannot be

*  1Byte to 5TB

* Unlimited storage

* S3 has universal namespace, where names must be unique

* Read after

 

 

FAQS:

1. You are working with a customer who has 10 TB of archival data that they want to migrate

to Amazon Glacier. The customer has a 1-Mbps connection to the Internet. Which service

or feature provides the fastest method of getting the data into Amazon Glacier?

A. Amazon Glacier multipart upload

B. AWS Storage Gateway

C. VM Import/Export

D. AWS Import/Export

AWS IAM Service

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IAM allows to manage users and their level of access to AWS Console.

Very useful in administrating a companies AWS account in real life.

 

1.  Centralized control of AWS account

2. Shared Access to your AWS account

3. Granular Permissions.

4. Identity Federation (Active Dir,FB, Linkedin..)

5. Multifactor Authentication. ( Virtual and Hardware (Eg:RSA Device) )

6. Temporary access for users/devices and services.

7. setup rotation own password rotation policy

8. Supports PCI DSS Compliance

9.  IAM is not regional, it is applicable universally.

10.

Components

Users, Groups, Roles , Policies (permissions) and Services/Resources.

 

//not to be used for login

Access Key :  nothing but username

Secret Access Key :  Password