How to reduce snapshots

Conclusion first ： The snapshot practice in the industry is to back up the underlying blocks instead of just backing up files （ The difficulty of backing up files 、 Speed 、 The reliability is poor , Cannot be producted ）, So there may be file system sizes ＜ Snapshot size . For example, after filling the hard disk, delete all the files and take a snapshot , The snapshot is the same size as the hard disk , The size will not shrink in the future . This is the case with block level backups .

To reduce the snapshot , You can only buy a new plate , Copy the existing files in the cloud disk to the new disk （ The difficulty of backing up files 、 Speed 、 The reliability is poor ）, Then take a snapshot of the new disk , Then delete the snapshot of the original disk .

LightHouse Snapshot policies vary from domain to domain , Click a single... On the console LightHouse The snapshot tab of the instance shall prevail .

International station cloud disk snapshot is not free .

China Station cloud disk snapshot free 50G There is an attributive , China Station CVM Domestic regions （ Including Hong Kong 、 Taiwan ） free 50G It is free for each region in China 50G、 Not every machine is free 50G, There is no free quota in overseas regions .

also 、 also 、 also , Users have cloud disk drives in normal status in the above regions （ Not to be recycled or destroyed ） when , Only in this region 50GB Snapshot Free Quota .

also 、 also 、 also , It is expected that the snapshot free quota policy will be cancelled in the future .

If you are in a certain region of the country 【 All system disks cloud disks + All data disks cloud disks 】 size ≤50G, The free quota is enough . The reality is that , current CVM All are 50G System startup , If you want to spend money for free , Ensure that in all regions of the country ,【 All system disks cloud disks + All data disks cloud disks 】 size ≤50G

Details Tencent cloud official website document Make it very clear , The snapshot practice in the industry is to back up the underlying blocks instead of just backing up files （ The difficulty of backing up files 、 Speed 、 The reliability is poor , Cannot be producted ）

If you want to be within the free quota ,【 All system disks cloud disks + All data disks cloud disks 】 size ≤50G You don't have to worry about it , If ＞50G, It is possible to exceed the free quota , For example, after filling the hard disk, delete all the files and take a snapshot , The snapshot is the same size as the hard disk , The size will not shrink in the future . This is the case with block level backups .

To reduce the snapshot , You can only buy a new plate , Copy the existing files in the cloud disk to the new disk （ The difficulty of backing up files 、 Speed 、 The reliability is poor ）, Then take a snapshot of the new disk , Then delete the snapshot of the original disk .