CPFS AI-Enhanced Edition file systems support VSC high-speed access and VPC dual-channel parallel access. This topic describes the performance and capacity specifications of CPFS AI-Enhanced Edition and the applicable advanced features.
File system performance specifications
When you access a CPFS AI-Enhanced Edition file system over RDMA through a VSC high-speed access channel, the performance specifications are as follows:
Metric | CPFS AI-Enhanced Edition 400 MB/s/TiB baseline (invitational preview) |
Read throughput | min{400 × storage capacity (TiB), 400000} MBps. The maximum read throughput can reach 2 TB/s. To increase the read throughput, submit a ticket to submit a request. |
Write throughput | min{200 × storage capacity (TiB), 200000} MBps |
Maximum throughput per client (the maximum speed at which a single server can access the file system) | 25 GB/s |
Read IOPS | min{6800 × storage capacity (TiB), 6800000}. The maximum read IOPS can reach 30,000,000. To increase the read IOPS, submit a ticket to submit a request. |
Write IOPS | min{2300 × storage capacity (TiB), 2300000} |
Average single-stream 4 KB read latency | 0.25 ms |
Average single-stream 4 KB write latency | 0.6 ms |
When you access a CPFS AI-Enhanced Edition file system through a VPC, the performance specifications are as follows:
Metric | CPFS AI-Enhanced Edition 400 MB/s/TiB baseline (invitational preview) |
Read throughput | The default read bandwidth per file system is 10 GB/s. If you require higher VPC bandwidth, Submit a ticket to submit a request. |
Write throughput | The default write bandwidth per file system is 5 GB/s. If you require higher VPC bandwidth, Submit a ticket to submit a request. |
Maximum throughput per client | 5 GB/s |
Average single-stream 4 KB read latency | 0.75 ms |
Average single-stream 4 KB write latency | 1 ms |
When a CPFS AI-Enhanced Edition file system is accessed simultaneously through VSC and VPC, the larger the VPC bandwidth, the smaller the VSC-RDMA bandwidth.
Cross-zone access through VPC mount targets is supported. The latency and throughput are affected by the network distance between zones, and are higher than those in the same-zone scenario. If you are sensitive to latency, we recommend that you deploy your compute instances and CPFS AI-Enhanced Edition in the same zone.
Capacity specifications
Minimum capacity: 10 TiB
Scale-up step size: 10 TiB
Maximum capacity: 1 PiB
File systems up to 20 PiB can be created with a step size of 300 TiB. To apply, submit a ticket.
For scale-up limits, see Limitations.