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I dont understand how tape infrastructure would be cheaper than free used disks that are on only 4-5 times a day for mostly very short periods of time (actually
by funkyy 13y ago
I dont understand how tape infrastructure would be cheaper than free used disks that are on only 4-5 times a day for mostly very short periods of time (actually some discs would be off for months). Disks are easy to use, they are not that easy to damage and you can have each copy of data synchronised on 2-3 different DCs easily using Amazon network during night times (low network usage).
- wmf 13y agoThe server and network to host those disks ends up costing much more than the disks, so even MAID built from free disks isn't that cheap.
- funkyy 13y agoWouldn't be possible to just stack them in custom/modified racks, connect them to the tape and custom switch? Then get very cheap servers to switch through them? The hard drives don't generate much heat anyways so only basic ventilation would be needed. Using enterprise servers for Glacier sounds like an expensive luxury. Most discs would be mostly offline anyways (small amount of changes) and I bet more than a half discs would be used less than once a week so cost of. Then if you want to increase speed of the whole structure put 1u server with 4 x 4TB SATA3 discs in Raid10 for caching the most used/changed parts, connect server to 1Gbps line and you are all done on budget. The cost is just 1 simple server, modification to racks (that would cost really small money), tapes for discs and custom hdd switch.