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Feature FAQs

Last updated:2021-07-21 14:18:53

How do I purchase an EBS volume?

You can purchase an EBS volume in the KEC or EBS console. For more information, see Purchase EBS volumes.

Why does the capacity of the EBS volume attached to a KEC instance not change after capacity expansion?

This is because only the storage capacity of the data disk is expanded after capacity expansion in the console. You need to log in to the KEC instance to resize the partition and file system. For more information, see Expand the capacity of an EBS volume.

Can I use the snapshot created before capacity expansion to roll back data after I expand the capacity of an EBS volume?

Yes. Capacity expansion does not affect the original backup or snapshot. You can use the original backup or snapshot to roll back the EBS volume to the status after capacity expansion in the console but before partition and file system resizing. To use the expanded capacity after rollback, you need to log in to the KEC instance and resize the partition and file system. For more information about how to resize the partition and file system, see Expand the capacity of an EBS volume.

What is the storage capacity range of the system disk?

The storage capacity of the system disk ranges from 10 GB to 500 GB.

What is the relationship between writing data, and partitioning and formatting?

You can use a new EBS volume or partition only after you initialize it and record the data structure on the volume. The purpose of formatting is to create file systems. Therefore, when a file system is created on an EBS volume, data of the file system is written to the EBS volume. The amount of the data written to volumes during formatting varies based on the file system. In the Windows operating system, you can use one of the following methods to format an EBS volume: Quick formatting: You can only allocate file systems to partitions and rewrite the directory table. Quick formatting uses less space. Full formatting: You can allocate file systems to partitions, rewrite the directory table, and scan for and mark bad sectors. In addition, empty blocks of the EBS volume are filled, which is equivalent to writing data to the entire EBS volume. The size of the first full snapshot in full formatting mode is approximately equal to the capacity of the EBS volume.

In the Linux operating system, if no data is written to an EBS volume after you format the volume, the size of the first snapshot depends on the format of the file systems on the EBS volume.

How do I partition and format the EBS volume attached?

For more information, see Attach an EBS volume.

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