Operation method of host configured to control storage device and operation method of storage system including host and storage device

An operation method of a storage system, the operation method comprising:

• sending, by a host of the storage system, a first command universal flash storage (UFS) protocol information unit (UPIU) to a storage device of the storage system;
• sending, by the storage device to the host, a first response UPIU corresponding to the first command UPIU and comprising information about an occurrence of a first exception event, based on the first command UPIU;
• sending, by the host to the storage device, a second command UPIU;
• sending, by the storage device to the host, a second response UPIU corresponding to the second command UPIU and comprising information about an occurrence of a second exception event, based on the second command UPIU;
• and
• preventing, by the host, processing of the occurrence of the second exception event, based on an exception event check cycle not elapsing.

An operation method of a UFS host configured to control a universal flash storage (UFS) device, the operation method comprising:

• confirming an exception event check cycle;
• receiving, from the UFS device, a first response UFS protocol information unit (UPIU) comprising information about an occurrence of a first exception event and information about a type of the first exception event;
• checking the occurrence of the first exception event and the type of the first exception event, based on the first response UPIU;
• receiving, from the UFS device prior to the exception event check cycle elapsing, a second response UPIU comprising information about an occurrence of a second exception event and information about a type of the second exception event;
• and
• preventing processing of the second exception event, based on the second exception event occurring prior to the exception event check cycle elapsing.