Help Center/ GaussDB(DWS)/ Service Overview/ Data Warehouse Types
Updated on 2024-10-18 GMT+08:00
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Data Warehouse Types

Product Type Overview

  • Standard Data Warehouse (DWS 2.0): Oriented to data analysis scenarios, DWS 2.0 provides enterprise-level data warehouse services with high performance, high scalability, high reliability, high security, and easy O&M. It is capable of data analysis at a scale of 2,048 nodes and 20 petabytes of data.
  • Standard data warehouse (DWS 3.0): DWS 3.0 is designed with a cloud native architecture that separates storage and compute. It also features hierarchical auto scaling for computing and storage, as well as multi-logical cluster shared storage technology (Virtual Warehouse or VW). These capabilities allow for computing isolation and concurrent expansion to handle varying loads, making it an ideal choice for OLAP analysis scenarios.
  • Hybrid data warehouse: a cost-effective solution that goes beyond large-scale data query and analysis. It also offers high-concurrency, high-performance, and low-latency transaction processing capabilities. The data warehouse can be used to process HTAP hybrid loads, and can be deployed in standalone or cluster mode.
  • GaussDB(DWS) data warehouses cannot access each other. You can create an OBS foreign table to associate two databases in the same data directory for data query.

Features

Table 1 Features

Module

Function

Standard Data Warehouse (DWS 2.0)

Standard Data Warehouse (DWS 3.0)

Hybrid (Cluster)

Hybrid (Standalone)

Dashboard

Resources

Yes

Yes

Yes

Yes

Alarms

Yes

Yes

Yes

Yes

Recent events

Yes

Yes

Yes

Yes

Cluster monitoring metrics (DMS)

Yes

Yes

Yes

No

Data

-

Yes

Yes

Yes

Yes

Cluster management

SQL editor

Yes

Yes

Yes

Yes

Monitoring panel (DMS)

Yes

Yes

Yes

No

Monitoring metrics (Cloud Eye)

Yes

Yes

Yes

No

Restart

Yes

Yes

Yes

Yes

Start

No

No

No

No

Stop

No

No

No

No

Scaling

Yes

Yes

Yes

No

Scale-in

Yes

Yes

Yes

No

Redistributing data

Yes

Yes (Note 1)

Yes

No

Viewing redistribution details

Yes

Yes

Yes

No

Changing the node flavor

Yes

Yes

Yes

Yes

Changing all specifications

Yes

No

Yes

No

Resetting passwords

Yes

Yes

Yes

Yes

Creating snapshots

Yes

Yes

Yes

No

Canceling read-only status

Yes

Yes

Yes

Yes

Deletion

Yes

Yes

Yes

Yes

Managing CNs

Yes

Yes

Yes

No

Storage space scaling

Yes

Yes

Yes

Yes

Basic Information

Basic information

Yes

Yes

Yes

Yes

ELB

Yes

Yes

Yes

N

Resource Management

Yes

Yes

Yes

N

Intelligent O&M

Yes

Yes

Yes

No

Logical cluster

Yes

Yes

Yes

N

Snapshot

Yes

Yes

Yes

No

Parameter modifications

Yes

Yes

Yes

Yes

Security settings

Yes

Yes

Yes

Yes

MRS data sources

Yes

Yes

Yes

No

Tags

Yes

Yes

Yes

Yes

Node management

Yes

Yes

Yes

No

Upgrade management

Yes

Yes

Yes

No

Logging

Yes

Yes

Yes

No

User management

Yes

Yes

Yes

No

Integration

Data migration

Yes

Yes

Yes

No

DR management

DR management

Yes

No

Yes

No

Snapshot management

Restoration

Yes

Yes

Yes

No

Deletion

Yes

Yes

Yes

No

Copy

Yes

Yes

Yes

No

Incident management

Event management (general)

Yes

Yes

Yes

Yes

Alarm management

Alarm management

Yes

Yes

Yes

Yes

Client connections

Client connections

Yes

Yes

Yes

Yes

Others

Inspection

Yes

Yes

Yes

No

Intelligent O&M

Yes

Yes

Yes

No

Node restoration

Yes

Yes

Yes

No

Warm backup on the tenant side

Yes

Yes

Yes

No
  • Note 1: The storage-compute separated table stores data on OBS, eliminating the need for redistribution. However, metadata and indexes are stored locally and must still be redistributed. Redistributing a table with separated storage and compute nodes only allows for read operations, and metadata redistribution is fast. However, creating an index on the table can affect redistribution performance, with completion time increasing with index data volume. During this period, the table is read-only and cannot be modified.
  • A hybrid data warehouse deployed in standalone mode cannot be changed to the distributed mode. Scaling, logical cluster operations, and resource management are not supported.
  • A hybrid data warehouse deployed in standalone mode does not support snapshots, DMS monitoring, or MRS data sources.
  • In a hybrid data warehouse deployed in standalone mode, the original syntax for specifying distribution columns will be ignored. Scheduled jobs, the sequence type, HDFS/OBS foreign table import and export, multi-temperature storage, and auto-increment partitioned tables are not supported. OBS foreign table import and export are supported in 8.2.0 and later versions.
  • Only DWS 3.0 clusters of 9.0.2 and later versions support the snapshot function.