John Waldorff wrote:Regarding storage costs..
I figured there are around 600GB of data per typical shooting day.
So I am supposed to carry 3 500GB SSDs to have enough overhead. That would be around US1600,- for good quality SSDs.
For archiving SSDs are surely not the way to go, here one can use conventional 3TB or 4TB harddrives. Each is good enough for 5-7 projects uncompressed and around 25 in prores. One of those costs around US300,-.
Editing directly on the SSD brings faster speeds than most RAIDs.
The complete storage solution needed being only the price of a medium priced lens it is absolutly in line with the rest of the equipment. This is not too bad after all.
None of the following is specific to the BMCC, but relevant, I think:
When you say "typical", I assume you mean typical for you, since everyone's shooting ratio, project schedules, and budgets are different. Some shoots will require (or can afford) more or less media than others.
Although I agree that hard disk drives can be used for backup, I follow-up that thought with the caveat that especially in the case of HDDs -- which have a tendency to become dead lumps in use, or even just sitting on a shelf, after random/unpredictable months or years -- to be sure to have identical copies of your data saved on
several HDDs, preferably HDDs of multiple manufacturers (to guard against production-run defects), and very importantly: Stored in multiple locations to guard against inevitable disasters such as theft, fire, flood, earthquakes, etc.
I also recommend making multiple backups (and storing them in multiple locations)
before editing camera-original footage directly on a SSD drive. It's still early days with SSD drives, and they've yet to prove themselves reliable compared to HDDs and other electronic media. The speed of SSD is an obvious advantage, but currently they are relatively fragile. The situation is gradually improving, but we're not "there" yet.
All storage systems eventually fail -- HDDs, SSDs, RAID, LTO tape, servers, the "cloud", etc. By "fail", I mean utter, total, unrecoverable failure. Despite, and sometimes because of, "redundancy" and "security" features, etc. That's why multiple (>2) backups, on multiple media, in multiple locations must be employed, if you want to protect your data.
Cheers.