On 05/18/2015 12:27 PM, Florian Rist wrote: > The whole thing about costs probably seams to be a bit ridiculous, but > unfortunately there is niter money nor understanding for the need here > right now. So I'm trying to figure out a cheap way to get to a working > system that can be handled somehow.
A reference point probably irrelevant since you're on the other side of the pond where prices are different: I just finished setting up a supermicro 36+2-bay chassis (http://www.supermicro.com/products/system/4U/6048/SSG-6048R-E1CR36H.cfm_ -- for $7070 came with with 2x8 AMDs, 64GB RAM, 2x 1TB SSD, and 10x 4TB Seagate NAS HDD. That adds up to 22TB raidz (raid-5 equivalent) zfs storage that with our backup sizes should last for 6-8 months. There's 26 empty drive bays for when we need more space. Backing up to a single filesystem is low-maintentance with bacula: you get auto-labeling, auto-recycling, etc. I have another similar system on my todo list, that one's a (slightly cheaper) 24+2 with the requirement to archive the backups long-term. So we're using Josh's vchanger to treat the 3.5 drives as removable "magazines". This is a bit trickier because you have to plan for disk failures and bacula has no built-in facility for writing two copies of the same backup to 2 disks at once. Plus tape changers require labeling tapes and re-inventorying slots manually, so more operator work. That's kinda what the hardware costs are like. (c.f. EUR 5K+ tape library with no tapes nor a computer to hook it up to.) -- Dimitri Maziuk Programmer/sysadmin BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu
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