FIELD: computer engineering.
SUBSTANCE: invention relates to computer engineering. Method of controlling service life of a data storage system, comprising dividing data storage system into multiple working sectors and multiple backup sectors, capable of forming backup of service life, wherein certain working sectors are subject to replacement with backup sectors in case of wear of said sectors after a certain number of programming and/or deletion cycles; setting a zone for controlling backup sectors for determining location of backup sectors assigned for replacement of worn-out working sectors; determining, sector by sector, whether current working sector is physically worn and replacing said working sector with backup sector, only if current working sector is deemed physically worn-out; wherein wear of a sector is evaluated by automatically reading quality deleting memory points of said sector and comparing with a boundary readability criterion (Margin Vref), which is harder than normal readability criterion (Normal Vref).
EFFECT: technical result is longer operating life of memory.
8 cl, 7 dwg
