Mudanças entre as edições de "Informações úteis: AWS"

Edição atual tal como às 18h40min de 31 de outubro de 2016

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-Diferença entre disco local e EBS:
+* [[Diferença entre disco local e EBS]]
-EBS is like the virtual disk of a VM:
-    Durable, instances backed by EBS can be freely started and stopped (saving money)
-    Can be snapshotted at any point in time, to get point-in-time backups
-    AMIs can be created from EBS snapshots, so the EBS volume becomes a template for new systems
-Instance storage is:
-    Local, so generally faster
-    Non-networked, in normal cases EBS I/O comes at the cost of network bandwidth (except
-    Has limited I/O per second IOPS). Even provisioned I/O maxes out at a few thousand IOPS
-    Fragile. As soon as the instance is stopped, you lose everything in instance storage.
-Here's where to use each:
-    Use EBS for the backing OS partition and permanent storage (DB data, critical logs, application config)
-    Use instance storage for in-process data, noncritical logs, and transient application state. Example: external sort storage, tempfiles, etc.
-    Instance storage can also be used for performance-critical data, when there's replication between instances (NoSQL DBs, distributed queue/message systems, and DBs with replication)
-    Use S3 for data shared between systems: input dataset and processed results, or for static data used by each system when lauched.
-    Use AMIs for prebaked, launchable servers