Instance Storage Types

Storage Types

Database systems are one of the most important IT systems and have high requirements on storage I/O performance. GaussDB supports ultra-high I/O and extreme SSD storage types.

Ultra-high I/O: ultra-high performance cloud disks excellent for enterprise mission-critical services as well as workloads demanding high throughput and low latency. For details, see the descriptions of "Ultra-high I/O" in Disk Types and Performance in Elastic Volume Service Service Overview.
Extreme SSD: lightning-fast disks ideal for workloads demanding ultra-high bandwidth and ultra-low latency. For details, see the descriptions of "Extreme SSD" in Disk Types and Performance in Elastic Volume Service Service Overview.

Extreme SSD storage is only available for whitelisted users. To apply for the permissions needed, submit a service ticket.

Baseline Bandwidth Per GaussDB Instance Node

The maximum storage throughput per node varies depending on the specifications of each GaussDB instance. The following tables provide detailed values for different specification types.

**Table 1** Maximum throughput (MiB/s) for x86 servers with Dedicated (1:4) specifications
Dedicated (1:4)	4 vCPUs \| 16 GB	8 vCPUs \| 32 GB	16 vCPUs \| 64 GB	24 vCPUs \| 96 GB	32 vCPUs \| 128 GB	48 vCPUs \| 192 GB	64 vCPUs \| 256 GB
Ultra-high I/O (SSD)	180	250	430	500	750	1,000	1,400
Extreme SSD (ESSD)	180	250	430	500	750	1,000	1,500

**Table 2** Maximum throughput (MiB/s) for x86 servers with Dedicated (1:8) specifications
Dedicated (1:8)	4 vCPUs \| 32 GB	8 vCPUs \| 64 GB	16 vCPUs \| 128 GB	24 vCPUs \| 192 GB	32 vCPUs \| 256 GB	48 vCPUs \| 384 GB	64 vCPUs \| 512 GB
Ultra-high I/O (SSD)	180	250	430	500	750	1,000	1,400
Extreme SSD (ESSD)	180	250	430	500	750	1,000	1,500