Technical Specifications

This section describes the technical specifications of GaussDB(DWS) in different versions.

**Table 1** Technical specifications of GaussDB(DWS) 8.1.3 – 9.1.0
Technical Specifications	Maximum Value of 8.1.3	Maximum Value of 8.2.0	Maximum Value of 8.2.1	Maximum Value of 8.3.0	Maximum Value of 9.1.0
Number of cluster nodes	2048	2048	2048	2048	Storage-compute integration: 2048 Decoupled storage and compute: The multi-VW technology is used to support up to 256 VWs, each with up to 1024 DNs. It is recommended that you limit VWs to 32 or fewer and DNs to 128 or fewer per VW.
Number of concurrent connections	Number of concurrent complex queries in minutes: 80 Number of short queries in seconds: 500 Number of concurrent short transactions in milliseconds: 5000	Number of concurrent complex queries in minutes: 80 Number of short queries in seconds: 500 Number of concurrent short transactions in milliseconds: 5000	Number of concurrent complex queries in minutes: 80 Number of short queries in seconds: 500 Number of concurrent short transactions in milliseconds: 5000	Number of concurrent complex queries in minutes: 80 Number of short queries in seconds: 500 Number of concurrent short transactions in milliseconds: 5000	Storage-compute integration: Number of concurrent complex queries in minutes: 80 Number of short queries in seconds: 500 Number of concurrent short transactions in milliseconds: 5000 Decoupled storage and compute: The multi-VW technology can increase the number of concurrent requests. As the number of VWs increases, the number of concurrent requests can be increased accordingly. The total number of concurrent requests in a cluster is affected by the GTM/CCN queuing. It is recommended that the number of concurrent requests be no more than 8192.
Cluster data capacity	20 PB	20 PB	20 PB	20 PB	Storage-compute integration: 20 PB Decoupled storage and compute: Data is stored on OBS. Theoretically, the capacity can be expanded infinitely.
Size of a single table	1 PB	1 PB	1 PB	1 PB	1 PB
Size of data in each row	1 GB	1 GB	1 GB	1 GB	1 GB
Number of columns in a single table: (excluding Hudi tables)	1600	1600	1600	1600	Row storage: 1600 Column storage: 1600 HStore: 5000
Number of columns in a Hudi table	N/A	N/A	5000	5000	5000
Number of partitions of the partitioned table	32,768	32,768	32,768	32,768	The maximum value is 32768. It is recommended that the value be no more than 1000.
RTO after a SPOF	60s	60s	60s	60s	60s
RPO after a SPOF	0	0	0	0	0
RTO after cluster DR switchover	60min	60min	60min	60min	60min
RPO after cluster DR switchover	60min	60min	60min	60min	60min

Virtual Warehouse (VW): also called logical cluster. DWS decoupled storage and compute allows a physical cluster to be split into multiple VWs. Different services can be bound to different VWs to isolate service loads and increase the number of concurrent requests.

**Table 2** Technical specifications of GaussDB(DWS) 8.0.x-8.1.1
Technical Specifications	Maximum Value of 8.0.x	Maximum Value of 8.1.0	Maximum Value of 8.1.1
Data capacity	10 PB	10 PB	20 PB
Number of cluster nodes	256	256	2048
Size of a single table	1 PB	1 PB	1 PB
Size of data in each row	1 GB	1 GB	1 GB
Size of a single column in each record	1 GB	1 GB	1 GB
Number of records in each table	2⁵⁵	2⁵⁵	2⁵⁵
Number of columns in each table	1600	1600	1600
Number of indexes in each table	Unlimited	Unlimited	Unlimited
Number of columns in the index of each table	32	32	32
Number of constraints in each table	Unlimited	Unlimited	Unlimited
Number of concurrent connections	Number of concurrent complex queries in minutes: 60 Number of concurrent short transactions in milliseconds: 5000	Number of concurrent complex queries in minutes: 60 Number of concurrent short transactions in milliseconds: 5000	Number of concurrent complex queries in minutes: 80 Number of concurrent short transactions in milliseconds: 5000
Number of partitions in a partitioned table	32,768	32,768	32,768
Size of each partition in a partitioned table	1 PB	1 PB	1 PB
Number of records in each partition in a partitioned table	2⁵⁵	2⁵⁵	2⁵⁵

The maximum number of concurrent connections is based on the data warehouse with the cloud disk flavor of 48 vCPUs or 64 vCPUs. For example, dwsk.12xlarge (48 vCPU | 384GB | 24000GB SSD) or dwsx2.16xlarge.m7 (64 vCPU | 512GB | 32000GB SSD) of a standard data warehouse.

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