Updated on 2024-03-26 GMT+08:00

EVS Concepts

Table 1 EVS concepts

Concept

Description

IOPS

Number of read/write operations performed by an EVS disk per second

Throughput

Amount of data read from and written into an EVS disk per second

Read/write I/O latency

Minimum interval between two consecutive read/write operations of an EVS disk

VBD

A device type of EVS disks. VBD EVS disks only support basic SCSI read/write commands.

SCSI

A device type of EVS disks. SCSI EVS disks support transparent SCSI command transmission and allow the server OS to directly access the underlying storage media.