Which of the following descriptions about cloud disk backup are wrong? (Multiple choice)

The SFS Turbo file system does not support system policies, so the created SFS custom policy is only valid for the SFS file system and not for the SFS Turbo file system.

Which of the following descriptions about the "expected number of instances" in the elastic scaling service is wrong?

The measurable nature of cloud computing is mainly for billing the cloud computing resources purchased by users.

Huawei's public cloud elastic file service SFS can implement fine-grained permission management to ensure user permission security without the need for other public cloud services.