Terms

This topic describes the terms used in Block Storage.

No.	Term	Description
1	Disks	Disks are block-level data storage resources for Elastic Compute Service (ECS).
2	ESSD AutoPL disks	ESSD AutoPL disks based on enhanced SSDs (ESSDs).
3	ESSDs	Enhanced SSDs (ESSDs) use 25 Gigabit Ethernet and remote direct memory access (RDMA) to reduce latency and deliver up to 1,000,000 random read/write IOPS per disk.
4	Local disks	Local disks are located on the physical machines that host their associated Elastic Compute Service (ECS) instances.
5	Triplicate storage	Disks use triplicate storage technology to provide stable, efficient, and reliable access to data in ECS instances based on a distributed file system, achiving a high data reliability.