Ransomware attackers specifically target and attempt to destroy backup systems to increase the probability of payment. Hardening your system is critical. Please ensure you have reviewed your platform security using the Security Hardening Checklist
After this file is created, all subsequent restores of the client's data use block-level restore.
To deactivate block-level restore
Delete (or rename) the PFI_BLI_RESTORE file.
When block-level restore is activated, it is used for all files in the restore. Block-level restore may not be appropriate for all of the files. It may take longer to restore a large number of small files, because they must first be mapped.