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Used Dell C2100, 2xXeon E5620 (quad core) 96GB ram, Chelsio 10GbE Two 2.5" 160GB internal SSDs for ZIL and l2arc. 12x4TB drives. $2000 + Chelsio NIC ($230) p
by gonzo 12y ago
Used Dell C2100, 2xXeon E5620 (quad core) 96GB ram, Chelsio 10GbE
Two 2.5" 160GB internal SSDs for ZIL and l2arc.
12x4TB drives.
$2000 + Chelsio NIC ($230) plus 12 x 4TB WD Red ($2000)
So for $4250. I get 48TB and a better performing system in 2U.
His system costs 6012 EUR, or about 7900 USD at today's exchange rate. For $8500 I can fit 96TB in the same space, have 192GB of RAM, 16 cores @ 2.4GHz, 740GB of SSD for ZIL and l2arc.
And redundant power.
- ZenoArrow 12y agoYou're not comparing correctly. Your system would only have 96TB if you weren't using any form of RAID-like caching. The guy from the article is using ZFS caching to improve data reliability.
- gonzo 12y agoHe has 24 4TB drives in 4U, but only 16GB of RAM, and a single E3-1230 (quad core) at 3.30GHz, and 4 x 1Gbps networking. I'm not sure what a "RAID-like cache" is. I know what redundancy is, and I know how ZFS works. 16GB is likely adequate for his storage needs. He doesn't have that many clients accessing the storage. and I could keep two complete copies of the data on two machines, each with redundant power, etc.
- kev009 12y agoZFS SLOG (ZIL on a dedicated device) and L2ARC do nothing for data reliability, they are only performance enhancements. Reliability is guaranteed by the CoW and atomic nature of the FS.