backup

noun
C1+
1
C1+
extra help or support that you can get if necessary
پشتیبان, پشتیبانی, کمک اضافی, حمایت ثانویه
2
C1+
a copy of a file, etc. that can be used if the original is lost or damaged
نسخه پشتیبان, ذخیره پشتیبان, کپی احتیاطی
Always make a backup of your work.
a backup copy
see also back something <-> up