Would an 8 HDD array really require Thunderbolt 2?
It can. See the 2MB sequential transfer chart here:
http://www.storagereview.com/western_digital_velociraptor_1tb_review
The Seagate Barracuda XT there gets around 165MB/s. That's 1.320 Gb/s. 8 x that is 10.56 Gb/s. For a 10K or 15K RPM array it is even easier to crack 10Gb/s with 8 drives if confine the workload to just single streaming of a sequential file.
Throw in some random access or concurrent access of multiple files and it is a bit more fuzzy as to whether it will make a difference. (the disk transfer rates will drop. )
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There's still nothing (Affordable and useful) which uses the thunderbolt 1, why make a thunderbolt 2?!?
Because being the cheapest alternative on the market was never what Thunderbolt was targeted at. It was always targeted at both performance and aggregation workloads.
For single usage workloads 20Gb/s is going to be better than 10Gb/s. 20Gb/s can transport USB 3.1 data to a host as easily as the 10Gb/s v1 transported USB 3.0. For mixed data transfer workloads the 4K video Display port data + 1Gb/s + a USB 3.0 port data will work better on TB v2 than v1.
When Thunderbolt (Lightpeak ) first came out there was lots of kool-aid thrown around about how Thunderbolt was going to take over for everything. That was more hype than reality.
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....
You know what I would pay $300 for? A TB hub with:
- 4xUSB 3.0 ports (powered)
- 1xFW800
- 1xeSATA
- 1 x Gigabit Ethernet
- TB Passthrough
- 802.11ac WIFI
- 5.1 Audio
- Memory Card Reader
- Blu-Ray Burner
The everything and the kitchen sink are unlikely to hit a $300 price point ever. The other issue is that the are only 4 PCIe lanes that Thunderbolt controller is going to provide.
FW800 , USB 3.0 , 1GbE , and SATA are all going to take one. Throwing on top Wifi ( another one) is a bit over the top.
If collapse the memory card onto the USB bus then won't have 4 ports. Likewise if couple the 5.1 audio to USB. (if 5.1 audio on PCI ... again already burned up that lane budget)
The wider diversity of "stuff" mean the wider diversity of drivers have to deal with during the certification process. Complexity generally adds to cost.
And I don't even burn blu-rays! But for $300, come on! And it should work flawlessly.
" For $300 just keep piling on more stuff " doesn't generally make systems cheaper to design and produce.