Any business dealing in legal records knows that the material in those documents is often of a highly sensitive nature. Your duty as a legal professional is to keep those records only in the hands of those who need them.
Laws differ from state to state as to how long you must keep records on file before being able to legally destroy them. It's not as simple as being able to shred a file as soon as a case with a client is settled. There may be appeals, or those cases may come up again in future legal disputes, and having the records accessible is of vital importance.
If your company chooses to go with an offsite records storage company, there are many that cater to the legal profession. They know the types of files you will need to store, and they understand the sensitivity involved. You can store case files, including all kinds of client information, without fear that an unwanted individual will be accessing the data.
Most companies store documents, including legal documents, in highly secure facilities. If you pick the right company, and really delve into their security measures, you will be able to rest easy at night, knowing that your clients' information is safe.
Some companies even offer you the ability to sign up for automatic notifications when your records may be legally destroyed, depending on your state's specific laws.. And if that same company also offers secure document destruction, then every bit of the process, from storage to destruction, is taken care of at the facility, without you having to do any extra work or employ any extra help.