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Amazon Elastic Block Store (EBS)

Amazon Elastic Block Store (EBS)

*  persistent block level storage volumes.
* can install os .
* automatically replicated within its Availability Zone 
*  high availability and durability.
* amazon EBS, you can scale your usage up or down within minutes
* two type ssd and hdd

SSD Storage 

* faster - no network latency.
* ephemeral - can't detach it from an instance and attach it to another.
* available to more powerful instances
* backed by solid-state drives (data on solid-state flash memory)
* 3 categories

1.General Purpose (SSD)-GP2 

* suitable for database workloads that have moderate I/O requirements.
* maximum of 10,000 IOPS, and provide up to 160 MB/s of throughput per volume
* System boot volumes
* Volume Size - 1 GiB - 16 TiB
* $0.10/GB-month

2.Provisioned IOPS SSD (io1) Volumes

*  throughput-intensive database and data warehouse workloads
* maximum of 20,000 IOPS and provide up to 320 MB/s of throughput per volume.
* Large database workloads, such as:MongoDB,Cassandra,Microsoft SQL Server,MySQL,PostgreSQL,Oracle
* Volume Size - 4 GiB - 16 TiB
* $0.125/GB-month

3. Magnetic Storage

Magnetic Storage (formerly known as RDS Standard storage) is a good match for small database workloads where data is accessed infrequently.

Hard disk Drives (HDD)

1. Throughput Optimized HDD (st1)

* Low cost HDD volume designed for frequently accessed, throughput-intensive workloads
* Big data, data warehouses, log processing
* not suitable for boot volumes
* volume size - 500 GB - 16 TB
* $0.045/GB-month

2. Cold HDD (sc1)

* Lowest cost HDD volume designed for less frequently accessed workloads
* Colder data requiring fewer scans per day
* volume size - 500 GB - 16 TB
* speed - 250 mb/sec
* $0.025/GB-month

This post first appeared on AdminCool, please read the originial post: here

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Amazon Elastic Block Store (EBS)


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