You can try this in terminal/telnet to see if your system is capable of 32 bit or 64 bit.

It should be 64 bit.

cat /proc/cpuinfo | grep -Gq "flags.* lm " && echo '64bit' || echo '32bit'

 

I would try upgrading to V5 first, it may make going to V6 easier... and that would run in 32 bit.

 

You can try this in terminal/telnet to see if your system is capable of 32 bit or 64 bit.

It should be 64 bit.

cat /proc/cpuinfo | grep -Gq "flags.* lm " && echo '64bit' || echo '32bit'

 

I would try upgrading to V5 first, it may make going to V6 easier... and that would run in 32 bit.

Even if you don't go to v6, you should get off 4.7. Not many people on the forum who can support 4.7, and v5 has some new features, not the least of which is support for larger drives.