A method NetWare uses to ensure that data is stored safely. Data blocks are redirected from faulty blocks on the server's disk to a small portion of disk space set aside as the Hot FixTM Redirection Area .
Once the operating system records the address of the defective block in a section of the Hot Fix area reserved for that purpose, the server doesn't attempt to store data in defective blocks.
By default, 2% of a disk partition's space is set aside as the Hot Fix Redirection Area.
Hot Fix is always active unless the disk fails and is inoperative, or unless the redirection area is full. Hot Fix, together with read-after-write verification, enables a hard disk to maintain data integrity.
See also Data protection.