To TRIM or Not to TRIM: Judicious TRIMing for Solid State Drives
نویسندگان
چکیده
Fig.1(a): Files A and B initially exist in file system and SSD Fig.1(b): Two different (file system and SSD) viewpoints after file system overwrites file A with A’ and deletes file B Fig.1(c): Pages (B1, B2, and B3) in SSD are not removed even after garbage collection Fig.1(d): Changes to SSD as TRIM is first issued in Fig.1(b) and then, garbage collection performed in SSD ⌘ FTL takes note that the pages of B have been deleted (through the TRIM command) resulting in the pages being erased during garbage collection
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