LaCie 12big Thunderbolt 3 DAS Review

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bjornl

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Your available storage for raid 50 and 60 are wrong. In both cases you double the available data by counting both sides of a mirror when you can only write to one.

Your wrote:
Raid 50 60/12
Raid 60 48/24

While the correct values are:
Raid 50 30/6 x 2(mirror) or usable data of 30tb
Raid 60 24/12 x 2(mirror) or usable data of 24tb
 

the nerd 389

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Nov 20, 2012
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@BJORNL

You're thinking of RAID 51 and 61 (very rare, to say the least). In raid 50, it's not a mirror, it's a RAID 5 array of RAID 0 arrays. The RAID 0 arrays have two drives worth of capacity, and you lose one of those arrays to the RAID 5 array. The numbers in the article are correct.
 
Dec 25, 2017
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Hi, can somebody explain why the distinction between DAS and NAS? Why not pluggin in a GigE port on a DAS and make the same piece of hardware suitable for bot DAS and NAS? I can't imagine how a GigE card would change the price of a 2K system...
I realize that the scenarios are a bit different, but I don't understand the practical advantages, from the manufacturer's perspective, to distinguish.
 

Rookie_MIB

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That really is the main difference between a DAS and a NAS. DAS is Direct Attached Storage, as in via USB, TB, etc. It connects to a host system and is used only by that system. NAS is Network Attached Storage, has it's own operating system, and is only connected to a network via whatever networking protocol is being used. It can be accessed by any other computer system on the network (assuming proper permissions and logins).

Now, you can take a DAS unit like this, connect it to a computer, and present that on a network as a NAS. So - you have a NAS made up of one (or many) DAS units. Theoretically you could take a TB card which has two TB3 ports per card, put it on a low cost motherboard which has x8/x8, and attach 4 of these to it for 400TB+ of space.

 
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