Inistate AWS Backup

Support
1

  1. Does the daily backup work as follow?
    Day 1 backup: contains data created on Day 1
    Day 2 backup: contains data from Day 1-2
    Day 3 backup: contains data from Day 1-3 and so on?
    Answer: Backup done as you described,it is the snapshoot of current the database every midnight. Provided no data is deleted in between.

  2. Can you further clarify the “10 days data loss” statement using the backup approach described in item 1?
    Answer: Meaning all 9 backups(which AWS promise 99.999999999% won’t corrupt) can not be restored in the event of current server(more than 22 database servers running at all time). So it will be
    0.00000001% ^9 chances it will be happen on top of all 3 servers are corrupted at the same time (0.001%^3)

  3. If the backup works as described in item 1,is there any maximum amount of data allowed for each backup?
    Answer: There is no hard limit on amount of data allowed for each backup. Note that, backup is not accessible for end-users. You may request excel export together with file download links.

  4. From the excel export together with file download links, are we able to view the information in detail?
    Answer: Yes you may filter the data and export it yourself to view the data

  5. For the 99.9999999% data durability, does it mean that 0.00000001% that this 10 days data will be loss within a server and will be impossible for all the 3 server to be corrupted at the same time?
    Answer: Nothing is impossible. It is about the chance. Note that is not all backup, is each backup has a 0.000000001% of corrupt. Each backup is stored in 3 different AWS data center location in Singapore. Besides multiple hardware failure, let’s all 3 locations hit by missile simultaneosly at exactly the point of our backup stored, then the data will be corrupt.
    AWS
    image

  6. What is a 10 days data loss mean?
    Answer: Day 1 backup corrupt, Day 2 backup corrupt, Day 3 backup corrupt and so on until we have the restored the day 10 backup corrupt. Of course there is chance that even day 10 backup is corrupt. But this is on top of 3 data server corrupt also previous 9 backup corrupt.

  7. How is 10 days data loss the worst scenario?
    Answer: All backups failed, except last one, oldest one. Of course in any system, the definite worst will be total loss