Do you want BuboFlash to help you learning these things? Or do you want to add or correct something? Click here to log in or create user.



Question
In AWS, you can group EC2 instances into Placement Groups that determine how they are distributed over different racks within differnt data centres. There are three types of Placement Groups: [...] , Spread and Partitioned.
Answer

Clustered

^^ Clustered Placement Groups are for a set of EC2 instances that communicate a lot with each other and you want low network latency between them, so you want them in the same Availability Zone and as close together as possible (i.e. on the same rack).
^^^ Spread Placement Groups are for a set of EC2 instances that do not communicate much with eachother (i.e. low network latency is not an issue) but they each do critical workload that is a replication of each other, so you want them on differnt racks, possibly spread across multiple AZs. For Clustered Placement Groups think individual EC2s!
^^^^ Partitioned Placement groups, place EC2 instances into different partitions, each of these partitions is then in turn spread across multiple racks, possibly across multiple AZs. This is for HDFS, Cassandra usecases.


Question
In AWS, you can group EC2 instances into Placement Groups that determine how they are distributed over different racks within differnt data centres. There are three types of Placement Groups: [...] , Spread and Partitioned.
Answer
?

Question
In AWS, you can group EC2 instances into Placement Groups that determine how they are distributed over different racks within differnt data centres. There are three types of Placement Groups: [...] , Spread and Partitioned.
Answer

Clustered

^^ Clustered Placement Groups are for a set of EC2 instances that communicate a lot with each other and you want low network latency between them, so you want them in the same Availability Zone and as close together as possible (i.e. on the same rack).
^^^ Spread Placement Groups are for a set of EC2 instances that do not communicate much with eachother (i.e. low network latency is not an issue) but they each do critical workload that is a replication of each other, so you want them on differnt racks, possibly spread across multiple AZs. For Clustered Placement Groups think individual EC2s!
^^^^ Partitioned Placement groups, place EC2 instances into different partitions, each of these partitions is then in turn spread across multiple racks, possibly across multiple AZs. This is for HDFS, Cassandra usecases.


Summary

statusnot learnedmeasured difficulty37% [default]last interval [days]               
repetition number in this series0memorised on               scheduled repetition               
scheduled repetition interval               last repetition or drill

Details

No repetitions


Discussion

Do you want to join discussion? Click here to log in or create user.