yep sounds good to me..
One of my clients needs to be able to store about 20TB of data, he's currently got a cupboard load of external hard drives hence the reason I want to move them all onto one server and have it network accessible, what would be the best solution to achieve this?
Should I use RAID5? with 2TB Disks x 11?
yep sounds good to me..
Buy a couple of tera station pros one as his storage place and the other as a backup of the first.
Is it pure archival of data storage or in use production data storage?
When you say network accessible, does just one server need to access it (you could use iSCSI - SAN) or do client PCs need to talk directly to it (CIFS for Windows, NFS for Linux - NAS)? If the latter I'd suggest a decent NAS box from any of the usual names (Dell, HP, NetApp, Oracle), but find one that doesn't charge you extra for the protocol licences.
Will you ever need to expand beyond 20TB? If so find a solution that'll take extra disk trays - you don't want to have to replace the whole box and restore data to a new one when they fill it.
Personally I'd want RAID 6 with two hotspares for that much data. By the time you've taken RAID 6, spare disks and formatting into equation you generally end up with about two-thirds of your space being usable. So, if you need 20TB usable I'd say 15 2TB disks.
Just my 2 pence.
How much you got to spend?
I'm currently looking into building a Server using a Supermicro chassis and then wacking in a load of disks
It's mostly digital images of a VERY high megapixel rate, hence the high storage space required, this is mostly for archiving but it will be accessed a few times every week for an image.
imo RAID 6 or RAID 5 + hotspare at the least. 20tbs is a hell of a lot of data to loose!
I've been looking at a backup server today and given you will need at least 13 * 2tb or 9 * 3tb drives you will be looking at a few grand for the server itself without drives. From what I could see Dell only do 12 and 24 drive powervaults in 3.5inch form factor. Have a price up of whether a 12 bay with 3tb drives will be cheaper than a 24 bay with 2tb. Obviously if you just buy the powervault and stick in the HDs yourself it will be considerably cheaper
Thats a heck of a lot of data, prehaps more than one server would be better?. you could use dfrs to make it appear as one server
Perhaps more interesting will be the next topic, how to backup 20TB of data?
Back to the cupboard full of external drives?
Given that there will barely be any data transfer and it's mainly for archiving it might be cheaper to rent the space in a datacenter and let them take care of the backup as well.
Readynas 3200 24TB will do the job, all the file system support you would ever need and as you are storing images the added ability to have DNLA and Apple support will be handy.
We use then in all sorts of configurations and I have a 12 TB Pro myself, pm me if you want any more details.
BTW they are Supermicro Chassis.
Plus one to RAID6, with that many large drives you need at least two redundant ones and probably a hotspare. Might even be worth trying to use 3TB drives just to cut down the spindle count a little.
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