Imagine the rebuild time for a 10 terabyte drive ...
No one who wants to store 20 terabytes of data is going to use raid 0.
20 terabytes of data (10 terabytes effective) with just 2 drives in a raid 1 is also highly insecure due to the risk of a drive failing during your 37 hours best case rebuild when a drive fails
20 terabytes / 150 megabytes a second = 133,333 seconds / 60 = 2222 minutes / 60 = 37 hours
This feels like a accident waiting to happen.
A better, more safe way to get 20 terabytes would be 7 - 4 terabyte drives in a raid 6, or better yet zraid2 for the zfs inclined.
With ZFS, I would use 2 striped zraid1s consisting of 3 - 4 terabyte drives in each array, an effective raid 50, for an effective 16 terabytes.
You could add a 3rd zraid1 if you really needed over 20 terabytes or add a mirrored vdev of 2 - 4 terabyte drives for exactly 20 terabytes
Of course using 7 or even 9 drives to reach your goal is much more expensive than buying 2 - 10 terabyte drives, but that's the price you pay when you want 20 terabytes to actually be readable in 2 years.
@jessicapreston what is this ongoing posting scams. Same thing on Anandtech. Wasn't this out of fassion in 2005? It really annoys me, mainly by reminding me of those scriptkiddies who wreaked havoc on all forums without captcha. This, making money without being productive, Chinese viagra and direct links to virusses.
Worth noting in your overview that 0 not only lacks redundancy but also statistically multiplies your chances of data loss. One drive failure = total data loss. Jbod is essentially just lack of redundancy, but half your data could be recoverable in the event of a drive failure. I'm guessing only people interested in RAID 0 on a drive enclosure this size are seasoned video editing pro's though, and even then i question the need for that much 7200rpm scratch space.
I agree with others about the data safety issues of these drives. In regards to what you might need that much space, well 4k video could eat that up in a moderate amount of time depending on the compression used. For those who legally rip their BD's to disk the average is 30-50GB per. Hi-res 24/32bit audio can easily average 1-2GB per 60 minutes of audio. AAA PC games are averaging 30-60GB these days. Put all that together and it's not hard to get at least to 10GB. Twenty will take a while longer but not as long as it used to. I totally agree about the safety/reliability factors though. Never put all your eggs in one basket after all.
20Tb is too Little for people who makes 4K films. So if you Edit high resolution films or just take high quality photos, this or bigger is the way to go.
But most likely those persons use hotswapable 6bay nas instead of these cheap ones.
[quotemsg=20097348,0,120989]I for one don't have 20TB of porn, or pirated movies.
So who is this marketed too? $800 for 20TB is a bit ridiculous. Two 10TB WD RED drives are only ~$250-280 ea.
Do content producers need 20TB of external USB storage?[/quotemsg]
10TB WD Red drives are selling for $380 at Newegg and other major online US shops. The lowest price it has ever been on Amazon was $365.19 back on May 18th. Where on earth are you finding 10TB Red's for $250?
$760 for two at current prices means a very under market value $40 for 2 drive external case and RAID functionality for Book Duo.
well, i let this typo go, but seriously guys, this is the second time this article has popped in email notification, and this still claims 20 GB. are you guys in need of an editor? I am sure i can make some time.