I have an old analog Telrad Symphony II switch with Telrad Digital Speech v5.19 voicemail. The voicemail has 6 ports and about 250 users. My hard drive often get filled and I need more storage space for messages. My vendor has told me that Telrad no longer supports this version. Any advise on if I can move the data over to a larger hard drive? I no longer have the original software. Please help! I don't want to purchase a new system as this one works great, just not enough storage.