This topic provides answers to the frequently asked questions (FAQ) about Cloud Paralleled File System (CPFS). This help you quickly learn about CPFS.
What is CPFS?
CPFS is a fully managed and scalable parallel file system service that is provided by Alibaba Cloud to meet the requirements for high-performance computing. CPFS provides a unified namespace that allows concurrent access from thousands of servers. CPFS provides tens of GB/s of throughput and millions of input/output operations per second (IOPS) at an extremely low latency of sub-milliseconds.
What are the applicable scenarios of CPFS?
CPFS for Lingjun is an ultra-high-performance file storage service that supports end-to-end remote direct memory access (RDMA) networks. CPFS is suitable for scenarios that require intelligent computing, such as AI-generated content (AIGC) and autonomous driving.
What are the benefits of CPFS?
CPFS provides stable performance. CPFS for Lingjun supports a maximum throughput of 2 TB/s. A single file system can support a maximum of 30,000,000 IOPS.
How is the performance of CPFS?
CPFS provides a bandwidth of hundreds of Gbit/s, millions of IOPS, and sub-millisecond latency. The bandwidth and IOPS vary with the specification of the CPFS file system that you purchase.
How do I modify the performance of a CPFS file system?
After you create a CPFS file system, you cannot change the capacity or performance of the CPFS file system. However, you can upgrade the specification of the file system. If you select a higher specification, the performance of the file system is improved.
How do I activate CPFS and create a CPFS file system?
After you log on to the Alibaba Cloud Management Console and activate Apsara File Storage NAS (NAS), submit a ticket to apply for the qualification to use CFPS for Lingjun. Then, you can log on to the NAS console to activate CPFS. When you use CPFS for the first time, you must authorize CPFS to access other services. Then, you can create a CPFS file system. It requires 24 hours to create a CPFS for Lingjun file system. After the CPFS file system is created, you are charged for using the file system. After you create the CPFS file system, you can mount the file system to PAI-Lingjun AI Computing Service (Lingjun) and use the file system. For more information, see Lingjun resource quotas and Create a file system.
How do I monitor a CPFS for Lingjun file system?
You can monitor the status of a CPFS file system on the Performance Monitoring page of the NAS console or on the Performance Monitoring tab of the details page of the CPFS file system. The following metrics are provided: IOPS, throughput, latency, and metadata queries per second (QPS).
How is the data reliability of CPFS?
CPFS provides a multi-replica redundancy mechanism to ensure 99.9999999% data durability.
What is the service availability of CPFS?
As stated in the service level agreement (SLA) of CPFS, the service availability of CPFS is at least 99.9%.