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Before heading back home from Cambridge this morning we managed to squeeze in a visit to somewhere I've been looking to look around for a while: the Centre for Computing History.

The CCH is tucked away down a small road in an industrial estate behind the retail park (if you've ever wondered if there's anything worth making that weird hairpin bend at the south end of Coldham's Lane railway bridge for, now you now). It has a couple of themed rooms opening onto a small warehouse organised by broad theme (1970s, consoles, mechanical and electronic calculators, early home computers etc), although like a lot of specialist museums it can only display part of its collection. Many of its exhibits are in working order and are left running, so if you want to have a go at programming in BBC Basic or playing Space Invaders on an original Atari home games system, the CCH is the place for you.

I did warn [livejournal.com profile] attimesbracing that I would probably succumb to extreme nostalgia overload during my tour, and I wasn't wrong. Mind you, she had the odd squee at exhibits like 1990s mobile phones or the Commodore 64 (she well recalled the infamous carpet-singing power brick). In approximate chronological order, here are a few of my personal highlights:

large pictures )

If you're in Cambridge, the CCH is only £7 to visit, and will probably induce a serious bout of retro-computing nostalgia. My only disappointment was that they didn't have a wider range of their calculator collection on display, but then I have my own personal museum in that regard...!
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The backup solution for my Mac (2005-era dual-core G5 Powermac, running OSX 10.4.11) is currently as follows:

- important current work done via Dropbox
- Daily backup of key settings to my iDisk via OS X Backup
- Various daily/weekly/monthly backup jobs of documents, pictures and music from the main 250Gb drive to a second internal 250Gb drive I installed a couple of years ago.

Clearly this doesn't give me off-site backup and frankly I've accumulated enough stuff that the second drive isn't really big enough any more.

Now, given that I rarely go more than a month without visiting my mum down in Woking it occurs to me that I could get two 1TB external drives and make a habit of the following:

- Do a full backup onto Drive 1
- Do daily incremental backups onto Drive 1
- When I visit my mum, take Drive 1 down, leave it with her, and pick up Drive 2, left on my last visit
- Do a full backup onto Drive 2
- Do daily incremental backups onto Drive 2
- When I visit my mum, take Drive 2 down, leave it with her, and pick up Drive 1
- and repeat ad infinitum

This way I have a local backup that is at most a day old (and as I said, most stuff I am actively working on I host via Dropbox so is continuously backed up off site) and have a full backup no more than a month old some 40 miles away.

Any major flaws with this plan? And any particular reccomendations for 1TB or similar external drives that will work well with my setup?

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Simon Bradshaw

January 2022

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