Estimated lifetime according to SSDLife is roughly nine years.
Disk is rated between 3.86PBW (random) and 20PBW (sequential).
I'm not terribly good at interpreting SMART, but (WLC*480GB/0.04) ~ 3.6PB which seem to be in the ballpark.
Model : SAMSUNG MZ7WD480HAGM-00003
Firmware : NS00
Serial Number : xxx
Disk Size : 480,1 GB (8,4/137,4/480,1/480,1)
Buffer Size : Unknown
Queue Depth : 32
# of Sectors : 937703088
Rotation Rate : ---- (SSD)
Interface : Serial ATA
Major Version : ACS-2
Minor Version : ATA8-ACS version 4c
Transfer Mode : SATA/600 | SATA/600
Power On Hours : 11489 timmar
Power On Count : 25 gånger
Wear Level Count : 298
Temperature : 29 C (84 F)
Health Status : Bra (96 %)
Features : S.M.A.R.T., 48bit LBA, NCQ, TRIM, DevSleep
APM Level : ----
AAM Level : ----
Drive Letter :