The original signed versions of legal documents, such as Wills and Powers of Attorney are the only legally binding versions. Scan, photocopies and computer records are not legally valid because they don't have your original signature on them.
The original Will is your only Will and must be kept safely.
One place you should never keep an original Will is at home. If you have a fire, flood or burglary, you risk losing your Will. If your Will is damaged in any way, then the courts could declare the Will invalid.
You must keep your Will in a safe place, however that place must be easily accessible when the documents are needed.
The Legal Systems Group provide a complete document storage solution that solves all the problems of protecting important documents, for a small annual fee.