12x3.5"
Supermicro 2U SAS3 12GB/s - 12 Bay 3.5 Barebone CTO Server. Backplane: BPN-SAS3-826EL1 SAS3 Expander Backplane. Backplane: SAS3. 2x 2U Heatsinks. Caddies Included: 12x 3.5" Caddy. Generic Sliding Rackmount Rails.
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(you can throw out the mobo etc)
and install this board for fan controls - and disks (keep note there are different boards - and you should choose one that offers enough fan headers for you setup.
Condition: OPEN BOX. What you see in the photos is what you will receive! No other accessories included!
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Find many great new & used options and get the best deals for SuperMicro CSE-PTJBOD-CB2 Power Board for SuperMicro JBOD Server Chassis at the best online prices at eBay! Free shipping for many products!
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24x2.5"
1x IPMI port for Remote System Power on/off and system monitoring. 2x Supermicro AOM-SAS3-8I8E-LP 2-Port External to Internal mini SAS mSAS HD Adapter. Ideal for Cloud backup, data Replication or High desnsity Archive Storage Applications.
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I think those are cheapest options.