Exam AZ-800 topic 5 question 2 discussion

Although File3 is less than 70 days old, it is replaced by File1 as the free space policy will override the date. Therefore it will be placed on cold-tier in azure FS only. File 1 which replaces file3 remains on both.

70% of 500GB is 350GB. File4 is on Azure file share only because it's older than 70 days. File1 and File2 are a total of 300GB in size. File3 can have 50GB on server1. So File3 should be on Server 1 and Azure file share too.

Provided answer is correct.

https://learn.microsoft.com/en-us/azure/storage/file-sync/file-sync-cloud-tiering-policy The volume free space policy ensures that a specified percentage of the local volume the server endpoint is located on is always kept free. The date policy tiers files last accessed x days ago or later. The volume free space policy will always take precedence. When there isn't enough free space on the volume to store as many days worth of files as described by the date policy, Azure File Sync will override the date policy and continue tiering the coldest files until the volume free space percentage is met. Azure File share will always be available for all the files. 30% free space so 350GB is allowed meaning that File 3 will be in the file share only

File 1: C: Server1 and Azure file share File 3: B: the azure file share only Azure File Sync uses a cloud tiering policy to determine which files are kept locally and which files are moved to the cloud. The policy is configured to have 30 percent free space and 70 days, meaning that files that haven't been accessed for 70 days are moved to the cloud to keep 30 percent of the disk space free. In this scenario, File1 was last accessed 2 days ago and is 200GB in size, so it will remain locally on Server1. File2 was last accessed 10 days ago and is 100GB in size, so it will remain locally on Server1. File3 was last accessed 60 days ago and is 2000GB in size, so it will be moved to the cloud and stored in the Azure file share. File4 was last accessed 100 days ago and is 50GB in size, so it will be moved to the cloud and stored in the Azure file share. Therefore, File1 is located on Server1 only and File3 is located in the Azure file share only.

The volume free space policy will always take precedence; when there isn't enough free space on the volume to store as many days worth of files as described by the date policy, Azure File Sync will override the date policy and continue tiering the coldest files until the volume free space percentage is met. https://docs.microsoft.com/en-us/azure/storage/file-sync/file-sync-cloud-tiering-policy

It should be both same answer onprem File server and Azure file share Sync mean both ways then data tiering to remove cool file from onprem after 70 days

The volume free space policy tells Azure File Sync to tier cool files to the cloud when a certain amount of space is taken up on your local disk. With the date policy, cool files are tiered to the cloud if they haven't been accessed (that is, read or written to) for x number of days