AWS Glacier Flashcards
For AWS Glacier, is data stored in a single region and now may AZ’s?
It is stored in a region, in 3 or more AZ
What is the durability of Glacier?
11 x 9s
What is the availability of AWS Glacier?
4 x 9s
What is the logical construct used for storing in Glacier?
A vault
How much data can I store in a vault?
Unlimited but you are limited to 40TB per archive.
What is the minimum amount of data you can store in Glacier?
1 byte
How is data packaged to be put in a vault?
Data (your files) are packaged into an archive and uploaded into the vault.
When you are uploading an archive, what is the best method to use for large data above 200MB?
Use Multi-part upload.
What is Glacier select?
Enables you to run queries on CSV data in place in AWS Glacier.
With Glacier Select, how long does it take to retrieve data?
These are different tiers, - expedaited - standard - bulk All tiers have different access time and cost
How long will it take to access data with expeadated for AWS Glacier Select?
It takes 1 - 5 min
How long will it take to access data with bulkfor AWS Glacier Select?
3 - 5 hrs
What format can be used in AWS Glacier Sleletc?
Data has to be in comma delemetered files, CVS
When using Glacier select to query, what is the query language?
SQL subset.
Where is the data stored form a Glacier select?
Stored in a S3 bucket
With AWS slect, when you query, can you encrypt the output?
Yes 100%
I need to ensure that people can only put data in a vault and alos read it but not delete it, how cna I do this?
Use a vault policy, where we can define with a policy who can access, type of access and alos a condation.
I need to allow cross account access to a glacier vault, how cna I do this?
Use the vault resource based policy to grant cross account access.
What is the difference between a vault lock policy an access control policy?
Bot govern acces, but when the vault access policy is locked it can be chnaged.
I need to see what changes have occured with Glacier,, how cna I do this?
Use cloud trail.
How much data can I store in a single archive?
40TB
How long does it take to retrieve Glacier data compared to S3?
At best Glacier takes 1 - 5 min compared to s3 where data is instantly available.
There are three types of policy associated with the glacier, what are they?
- IAM policies for controlling who has access to a resource
- Access Policies
What are the retrieval options for glacier and their times?
Expedited 1 - 5 min
Standard 2-5hrs
Bulk 5 - 12hrs
Can you add a description to an archive after it is uploaded?
No, only at the time of upload.
Are op[eration with Glacier synchronous or async?
Async, you ask for something to be done and you will listen on an SNS topic for a response when completed.
How are investors handled by AWS?
AWS creates an inventory of a vault every 24hrs, when you request the inventory you get the last one created.
You can ask Glacier to do an ad-hoc inventory when things have changed.
Like s3 objects can I store metadata with the archive?
No, unlike s3 objects there is no ability to store metadata with the archive.
I have created an archive 6mts ago and now I wnat to add some files to it, how cna I do this?
You can, once created and uploaded it can not be edited.
What is an archive?
It is one or more files
Can you request files from the archive?
Yes, but you have to know externally what you are looking for, in what archive and the file details, this is not stored in Glacier.
I wnat to ensure compliance on vault and ensure they are no longer able to edit them, how can I do this?
You cna use a vault lock.
