Method and apparatus for facilitating wear leveling of solid state disk

An apparatus for facilitating wear leveling for a solid state disk (SSD), comprising:

• an obtaining unit configured to obtain a performance parameter of a SSD device of a plurality of SSD devices in a SSD cache, the SSD device including one or more SSD disks, wherein the performance parameter is enabled to comprise temperature of the SSD device;
• a determining unit configured to determine a weight for the SSD device based on the performance parameter of the SSD device;
• and
• a setting unit configured to set reserved space for the SSD device according to the weight for the SSD device, the reserved space being inaccessible in the SSD device;
• wherein the setting unit is configured to perform at least one of the following:
• setting the reserved space greater than a threshold space in response to the weight being above a predetermined threshold, and
• setting the reserved space less than the threshold space in response to the weight being below the predetermined threshold, and
• wherein
• if the reserved space is set to be greater than the threshold space, a writing frequency of the SSD device is set to be less than a threshold frequency, and
• if the reserved space is set to be less than the threshold space, the writing frequency of the SSD device is set to be greater than the threshold frequency.

An apparatus for facilitating wear leveling of a solid state disk SSD, comprising:

• a memory;
• and
• a processor configured to:
• obtain a performance parameter of a SSD device of a plurality of SSD devices in a SSD cache, the SSD device including one or more SSD disks, wherein the performance parameter is enabled to comprise temperature of the SSD device;
• determine a weight for the SSD device based on the performance parameter of the SSD device;
• and
• set reserved space for the SSD device according to the weight for the SSD device, the reserved space being inaccessible in the SSD device;
• wherein the processor, when setting the reserved space for the SSD device according to the weight for the SSD device, is constructed and arranged to perform at least one of the following:
• set the reserved space greater than a threshold space in response to the weight being above a predetermined threshold, and
• set the reserved space less than the threshold space in response to the weight being below the predetermined threshold;
• and
• wherein
• if the reserved space is set to be greater than the threshold space, a writing frequency of the SSD device is set to be less than a threshold frequency, and
• if the reserved space is set to be less than the threshold space, the writing frequency of the SSD device is set to be greater than the threshold frequency.