Abstract: A solid state hard disk casing, including: an upper casing and a lower casing fastened to each other, wherein a first lower recess is provided on a side of an inner surface of the lower casing close to one long edge of the lower casing, to accommodate a first portion of one or multiple electrolytic capacitors; a first upper recess is provided on a side of an inner surface of the upper casing close to one long edge of the upper casing, and the first upper recess is opposite to the first lower recess, to accommodate a second portion of the electrolytic capacitor placed in the first lower recess; and a side of the inner surface of the lower casing close to the other long edge of the lower casing is configured to fix a circuit board connected to the electrolytic capacitor.

Abstract: The present application provides an address translation method and system for a KV storage device. The provided address translation method for a read operation for a KV storage device includes: obtaining a logical address accessed by a read operation; and if the logical address hits a cached translation page, obtaining a physical address corresponding to the logical address from the cached translation page.

Abstract: The present application relates to a garbage collection method and a storage device for reducing write amplification. A method for selecting a data block to be collected in garbage collection, including: obtaining, according to a first selection policy, a first data block to be collected; determining, according to a first rejection policy, whether to refuse to collect the first data block to be collected; and if according to the first rejection policy, rejection to collect of the first data block to be collected is determined, not performing garbage collection on the first data block to be collected.

Abstract: The present application discloses a method for processing a deallocation command and a storage device thereof. The disclosed method includes the following steps: in response to receiving the deallocation command, obtaining an address range indicated by the deallocation command; and updating the table items of the deallocation table according to the address range indicated by the deallocation command. Embodiments of the present application can reduce the delay in processing the deallocation command and reduce the impact of processing the deallocation command on the processing bandwidth of the IO command.