EVS Basics
Key feature that allows EVS disks to scale without service interruption.
Elastic scalability
Fastest EVS disk type, offering ultra-high bandwidth and low latency
Extreme SSD
Feature that saves disk data at a specific point in time but doesn’t create a separate copy in a different storage system
Snapshot
Unique identifier assigned to every device on a network
IP address
Hierarchical file system connecting physical storage to local nodes via compute networks.
Distributed File System (DFS)
Number of read/write operations performed by a disk per second
IOPS (Input/Output Operations per Second)
Storage solution involving keeping a backup copy in OBS for data restoration
Backup
A secure, private network connection established over a public network
VPN
Tool that monitors EVS disk health in real time.
Cloud Eye.
Cost-effective EVS disk type designed for medium-performance enterprise applications
General Purpose SSD
Mechanism that divides data into 1 MiB blocks and stores three copies on different nodes for reliability
Three-copy redundancy
is a group of computers and devices connected within a small area, like a home, office, or school.
Local Area Network (LAN)
Two types of EVS devices available in Huawei Cloud
Virtual Block Device (VBD) and Small Computer System Interface (SCSI)
Performance metric indicating the minimum time interval between consecutive read/write operations
Latency
Term describing the system’s ability to rebuild lost data across multiple nodes in case of a fault
Data rebuild
A device used to convert analog signals to digital for Internet access
Modem
Storage types commonly used for development, testing, data warehouses, and HPC
EVS disks
EVS disk type ideal for workloads requiring low latency and high throughput for critical enterprise services
Ultra-high I/O
Two main differences between backups and snapshots
Backups are stored in OBS and allow recovery to different disks, while snapshots are stored on the same disk and used for rollbacks.
DHCP Stands for..
Dynamic Host Configuration Protocol