The way I interpret the Storage law is that all restricted and prohibited firearms have to be secured with a locking device AND store in a locked cabinet or in a vault or safe. Either way, the firearm must be secured with a locking device first.
Ummm, not how it reads to me. From:
http://laws-lois.justice.gc.ca/eng/regulations/sor-98-209/FullText.html
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STORAGE OF RESTRICTED FIREARMS
6. An individual may store a restricted firearm only if
(a) it is unloaded;
(b) it is
(i) rendered inoperable by means of a secure locking device and stored in a container, receptacle or room that is kept securely locked and that is constructed so that it cannot readily be broken open or into, or
(ii) stored in a vault, safe or room that has been specifically constructed or modified for the secure storage of restricted firearms and that is kept securely locked; and
(c) it is not readily accessible to ammunition, unless the ammunition is stored, together with or separately from the firearm, in
(i) a container or receptacle that is kept securely locked and that is constructed so that it cannot readily be broken open or into, or
(ii) a vault, safe or room that has been specifically constructed or modified for the secure storage of restricted firearms and that is kept securely locked.
STORAGE OF PROHIBITED FIREARMS
7. An individual may store a prohibited firearm only if
(a) it is unloaded;
(b) it is
(i) rendered inoperable by means of a secure locking device and stored in a container, receptacle or room that is kept securely locked and that is constructed so that it cannot readily be broken open or into, and, if the prohibited firearm is an automatic firearm that has a removable bolt or bolt-carrier, the bolt or bolt-carrier is removed and stored in a room that is different from the room in which the automatic firearm is stored, that is kept securely locked and that is constructed so that it cannot readily be broken open or into, or
(ii) stored in a vault, safe or room that has been specifically constructed or modified for the secure storage of prohibited firearms and that is kept securely locked; and
(c) it is not readily accessible to ammunition, unless the ammunition is stored, together with or separately from the firearm, in
(i) a container or receptacle that is kept securely locked and that is constructed so that it cannot readily be broken open or into, or
(ii) a vault, safe or room that has been specifically constructed or modified for the secure storage of prohibited firearms and that is kept securely locked.
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Note the "or" between clauses (i) and (ii). You can choose.