Gregory's ServerNO. Backup of websites, books & other media out of copyright & in the public domain, yes - but NOT artists’ / authors’ copyrighted material. That is THEFT. That is taking the food from their mouths & tearing down the roof over their head.
There are so many LEGAL ways to get so much, incl the despicably low prices A will sell for; if you can’t find a legal way, MAKE one, such as campaigning for PLR (public lending rights) in your country.
NEVER SUPPORT STEALING SOMEONE’S LIVELIHOOD.