Scenarios and Disk Partitions¶
If you have added a data disk during ECS creation, you must initialize the data disk after logging in to the ECS.
Scenarios¶
After a disk is attached to a server, you need to log in to the server to initialize the disk, that is, format the disk. You must initialize a disk before accessing it.
System disk
A system disk does not require manual initialization because it is automatically created and initialized upon server creation. The default partition style is master boot record (MBR).
Data disk
If a data disk is created along with a server, it will be automatically attached to the server.
If a data disk is created separately, you need to manually attach it to a server.
In both cases, you must initialize the data disk before using it. Choose an appropriate partition style based on your service plan.
Partitioning Operation Guide¶
Table 1 lists the common disk partition styles. In Linux, different disk partition styles require different partitioning tools.
Disk Partition Style | Maximum Disk Capacity Supported | Maximum Number of Partitions Supported | Linux Partitioning Tool |
|---|---|---|---|
Master Boot Record (MBR) | 2 TiB |
With MBR, you can create several primary partitions and one extended partition. The extended partition must be divided into logical partitions before use. For example, if 6 partitions need to be created, you can create them in the following two ways:
|
|
GUID Partition Table (GPT) | 18 EiB 1 EiB = 1048576 TiB | Unlimited Disk partitions created using GPT are not categorized. | parted |