How do IOPS scale with disk size for pd-ssd?

pd-ssd provides 30 read IOPS and 30 write IOPS per GB, up to the per-volume maximum of 100,000 read and 100,000 write IOPS. So a 500 GB pd-ssd disk delivers 15,000 IOPS. The calculator shows the exact IOPS and throughput for any size you enter.

What is pd-extreme and when should I use it?

pd-extreme lets you provision up to 120,000 IOPS independently of disk size, unlike other disk types where IOPS scale with capacity. It is designed for the most demanding database workloads such as SAP HANA, Oracle, and SQL Server on large Compute Engine VMs. The calculator shows the separate IOPS provisioning cost.

GCP Persistent Disk Calculator

StorageGCP

Calculate GCP Persistent Disk IOPS, throughput, and monthly costs by disk type.

Persistent Disk Configuration

Disk Type

Size (GB)

Quantity

Disk Type Comparison

Type	Price	IOPS	Throughput	Use Case
Standard	$0.040/GB	0.75 R / 1.5 W per GB	0.12 MB/s per GB	Bulk storage, logs, backups
BalancedSelected	$0.100/GB	6 R/W per GB	0.28 MB/s per GB	General workloads, boot disks
SSD	$0.170/GB	30 R/W per GB	0.48 MB/s per GB	Databases, high IOPS apps
Extreme	$0.125/GB + $0.006/IOPS	Up to 120,000 (provisioned)	Up to 2,200 MB/s	SAP HANA, large databases

Raw Output

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About This Tool

The GCP Persistent Disk Calculator determines the IOPS, throughput, and monthly cost for Google Cloud Persistent Disks based on disk type and size. It covers pd-standard (HDD), pd-balanced (SSD), pd-ssd, pd-extreme, and Hyperdisk options, each with different performance profiles that scale with capacity. Enter your desired disk size to see the resulting IOPS and throughput limits alongside the monthly cost, or specify your performance targets to find the minimum disk size required. This tool is essential for sizing boot disks, database volumes, and high-performance storage for Compute Engine VMs and GKE nodes.

When to Use This Tool

•Determining the minimum pd-ssd size needed to achieve a target IOPS for a PostgreSQL database on Compute Engine.
•Comparing monthly costs between pd-balanced and pd-ssd for a general-purpose web application workload.
•Calculating pd-extreme costs for an Oracle or SAP HANA deployment that requires independently provisioned IOPS.
•Right-sizing persistent disks for GKE node pools to balance performance and cost for stateful workloads.

Frequently Asked Questions

How do IOPS scale with disk size for pd-ssd?: pd-ssd provides 30 read IOPS and 30 write IOPS per GB, up to the per-volume maximum of 100,000 read and 100,000 write IOPS. So a 500 GB pd-ssd disk delivers 15,000 IOPS. The calculator shows the exact IOPS and throughput for any size you enter.
What is pd-extreme and when should I use it?: pd-extreme lets you provision up to 120,000 IOPS independently of disk size, unlike other disk types where IOPS scale with capacity. It is designed for the most demanding database workloads such as SAP HANA, Oracle, and SQL Server on large Compute Engine VMs. The calculator shows the separate IOPS provisioning cost.

Disclaimer: This tool runs entirely in your browser. No data is sent to our servers. Always verify outputs before using them in production. AWS, Azure, and GCP are trademarks of their respective owners.