Cumby
Would it be better to partition my time machine external drive and use half for time machine and the other half to manually copy/backup my external medial HD?
Bad idea, thats putting everything in once place. Worst premise for data protection
Methodology to protect your data. Backups vs. Archives. Long-term data protection
Everything is about 1. redundancy, 2. redundancy and 3. multiple storage platforms (DVD, multiple HD, online server archives ala a personal website etc.)
The first realization is that your data on your computer is highly vulnerable
The second realization is that you need a HD backup of your OS and data
The third realization is that you need at the very least a secondary HD backup
The fourth and final realization is understanding the fragility of any and all HD & ferromagnetic storage, and that vital data needs to be “frozen” on unassailable redundancies across multiple storage platforms including multiple HD, online backup, archival DVD burns comprising at the very minimum triple platform redundancy of data you have been working on for years or decades that cannot be replaced.
The B.A.R. “rule” (backup-archive-redundancy)
Backup: Active data emergency restore. Backups are moved from backups to archives; or from backups to the computer for restore or data retrieval.
Archive: Active and static data protection with the highest level of redundancy. Archives are only moved from itself to itself (archived copies). Generally a “long-term retention” nexus.
Redundancy: A fail-safe off-site or protected and “frozen” copy of your vital data and foolproof protection against magnetic degradation and HD mechanical failure. A likewise failsafe from theft, house fire, etc.
Redundancy has two points of premise:
A: redundancy (copies) of data archives.
B: redundancy of data on different platforms (optical, online, magneto-optical, HD).
Send your backups to your archives (as often as possible), and your archives to self-same redundancies.
*When referring to backups and archives here, this is in reference to your data saved/ created/ working on,... not your OS, your applications, and your system information / settings,...which is the idealized premise for use of Time Machine as a system-backup after internal data corruption or HD-failure.
Here we are referring to data backups and archives, not system-backups for restoring your OS-system.
If your data on your hard drive is the cash in your wallet, a backup is your bank account/debit card, and an archive is a locked safety deposit box.
Its easy to get your wallet emptied (corrupted) or stolen, your backup checking account is somewhat easy to get corrupted/drained or damaged, but your bunker security is in the lockbox inside the vault, where your vital data and archives reside. In the premise of preventing data loss, you want as often and as much as possible one-way transfers from your “wallet” to your safety deposit box archives; and further still a minimum of two copies of those archives.
Highest priority (archives) requires highest redundancy. In the premise of often copying data from backups to archives, backup redundancy plays a minor role.
Long-term active file backups (a book, a major time-involved video creation etc.) requires double-active redundancies, preferably a minimum of Time Machine and an autonomous external formatted HD, so there are at least three copies of this data: internal drive, Time Machine, and secondary non-TM HD backup.
