Rdslw :
120 GB * 0.2 DWPD * 3 years = ~24 TB
Those values are standard for modern SSD's. You will have to give us a model name for more details.
1.53 TB written is still low and IMHO ~10% of that drive life. Still I don't know exact model and it varies a lot.
Answering your question. Should be 26%, but that means it gets used down much faster than it should (~10%).
also for comparison I tried to find any test for PNY ssd, but I failed. Wired. If its any good ssd should survive at least 50TB.
1,Raw Read Error Rate,50,100,100,OK,000000000000,0,Enabled
9,Power On Time Count,0,100,100,OK (Always passing),0000000001D0,0,Enabled
12,Drive Power Cycle Count,0,100,100,OK (Always passing),0000000001E8,0,Enabled
168,SATA PHY Error Count,0,100,100,OK (Always passing),000000000000,0,Enabled
170,Reserved Block Count,10,100,100,OK,000000000057,0,Enabled
173,Wear Leveling Count (two words),0,100,100,OK (Always passing),0000000B0028,0,Enabled
192,Unexpected Power Loss Count,0,100,100,OK (Always passing),000000000057,0,Enabled
194,Disk Temperature,30,70,70,OK,001E001E001E,0,Enabled
218,FlashROM ECC correction count,50,100,100,OK,000000000000,0,Enabled
231,SSD Life Remaining,0,100,100,OK (Always passing),000000000059,0,Enabled
241,Lifetime Writes (GBytes),0,100,100,OK (Always passing),0000000006DD,0,Enabled
My SSD is a PNY CS1311 and my write just jumped to 1.73 TB. Those above are from HD Sentinel, the Wear Leveling just changed from A0026 to B0028. What does B stand for? And does 28% mean I just added an additional of 2% wear? Also on 231 SSD Life Remaining what does 59 stand for?