Re: [ARSCLIST] Hard disk drives and DAT/ calculating the future / Use LTO's

[Don Cox <doncox@xxxxxxxxxxxxxx>]

On 28/03/07, Andes, Donald wrote:

> Here's some easy numbers that put things in perspective.
> 
> Based on stereo 16/44.1 recording, which yields 10MB of data for each
> Minute of audio:
> 
> 600 MB = 1 hour of Audio
> 
> 1 GB = roughly 1.6 Hour of Audio 
> 
> 1 TB = 1666 Hour of Audio
> 
> 1666 hours/52 weeks = roughly 32 Hours/week Transferring Audio Real
> Time *Additional 8 hours/week spent calibrating equipment, getting
> coffee, eating lunch, etc.
> 
> Therefore, a single engineer working full time on a digitization
> project, using a single machine setup, which required little downtime,
> and calibration, could generate single handedly 1 TB of data in a full
> year. Salary, equipment depreciation and other production costs would
> easily total an EXCESS of $50,000/YR.

He might be stark raving mad at the end of a year spent copying data.
> 
> Cost to create (2) - 3 LTO tape sets?
> Complete LTO setup (w/tapes) would be less than $5000.
> 
> Spending 10% of your budget to back up 100% of the a year long
> project??
> 
> 
> This seems like a no brainer. No matter how large or small your
> archive.
> 
> Migration is not really an issue for a few years (say 4 years), and by
> that time, migration will be easy as you'll just have to add a new
> LTO-4 drive, and transfer your tapes. 3 tapes/year * 4 years = 12
> tapes. It would probably take you 1 day.
> 
> This is all A LOT easier than it seems.
> 
> The other option is to buy a few "GOOD" 1 TB drives ($500 each),
> duplicate, better yet triplicate your 1 TB of data and keep them on
> shelves. By the time you migrate, (4 years) you'll have 12 drives
> which would have costed about the same as your LTO setup. You'd also
> have to deal with hooking up older drives to newer machines, (drive
> formatting, OS compatibility, etc.) and then slowly transfer multiple
> TB's of non-validated data.
> 
> Why are we talking about all of this again????
> 
> 
> Don Andes
> Director of Archives
> EMI Music
> 
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Regards
-- 
Don Cox
doncox@xxxxxxxxxxxxxx