in my case where money isnt an issue wouldnt it be better for me to build a raid backup array? i understand your reasoning. im still studying and fairly new in the higher education of IT so when i start working ill keep what you mentioned to heart. only problem is that where i am located in europe things are more expensive here. another random idea why not create a raided backup array backed up to tape? is it possible to do a tape back up of data thata being written to disk instantly
On Mon, Jul 7, 2008 at 5:05 AM, Steve Cousins <[EMAIL PROTECTED]> wrote: > >> From: "Jon Aquilina" >> this is slightly off topic but im just wondering why spend thousands of >> dollars when u can just setup another server and backup everything to a >> raided hard drive array? >> > > Another RAID system helps but only if it is located somewhere else. The > main reason we backup is for disaster recovery. One nice thing about tape is > that you can take the tapes to another location easily or put them in a fire > safe. > > Another reason is that RAID systems don't scale up as easily as a tape > system. Our library has two 15 tape magazines that can be removed and > replaced. It costs about $750 to buy 15 new tapes plus a magazine. That's > not too bad for 6 TB of storage (uncompressed, with HW compression we get > about 9 TB). Plus it takes practically no time to start using it. > > The library wasn't really that expensive when we bought it either. > Somewhere around $7500. At the time we bought that we were using 400 GB > drives in our RAID systems at $300 each. To build a server with 5 TiB > (usable) of RAID storage at the time was about $7000. The tapes were more > expensive then (about $100 each) but for about $10,500 we got 12 TB of tape > storage (library plus 30 tapes). To get roughly the same of disk storage > would have been about $14K. So right off the bat tape was cheaper. Plus it > is so much easier to manage. I like the idea of snapshots and using rsync > plus links is a crafty idea but I sleep better knowing that I have a "real" > (one that I can carry around) backup of our data in our safe. > > Steve > -- Jonathan Aquilina
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