Question 1

What is a Compute Unit (CU)?

Accepted Answer

A compute unit (CU) is a group of hardware resources for serving your indexes and search requests. You can simply consider a CU as a fully-managed physical node for deploying search service.

Question 2

What is a vCU?

Accepted Answer

A virtual compute unit (vCU) is used to measure the resources consumed by read operations (such as search and query) and write operations (such as insert, upsert, and delete). The read and write costs vary for different vCU usage.

Question 3

Which type of CU should I pick?

Accepted Answer

Select the Performance-optimized CU for instant search results and high concurrent traffic for real-time applications. Choose the Capacity-optimized CU if you need to handle large vector datasets while maintaining reliable search speeds. Opt for the Extended-capacity CU if you need to manage massive-scale datasets where optimizing total cost is prioritized over latency.

Question 4

How many CUs do I need for a given collection?

Accepted Answer

Performance-optimized CU supports up to 1.5 million 768-dimensional vectors. Capacity-optimized CU supports up to 5 million 768-dimensional vectors. Extended-capacity CU supports up to 20 million 768-dimensional vectors. These estimates are based on vectors with primary keys only; additional scalar fields may reduce capacity.

Question 5

How can I get Zilliz Cloud discounts?

Accepted Answer

When you commit to an annual plan, you can get additional credits based on your usage.

Question 6

How can I request a new cloud region?

Accepted Answer

To request a new cloud service provider region for Zilliz Cloud, please fill out the form provided on the website.