johnsonwc

I have a lot of flexibility. I can control the file size. The software will write to the file until it approaches being full, then opens a new one and, if I choose, write to both until the first one is full and closes it, continuing to write to the new file.

I really appreciate everybodies input. I've learned a lot. Thank You. The data will be a continuous stream of data. The only pauses will be when the vehicle is repositioning itself or when it is surfacing to get a GPS fix to update its Inertial Guidance system. I have an SSD that I want to use to store data on the slow system. That is where I was hoping to get by with a single disk since that vehicle is much smaller. On the fast system, I have a number of laptop drives I'll be using in an array. Thanks, Walt

Thanks, I had planned to do that. I have to say that this has been one of the most respinsive and helpful forums I've ever posted on. Thanks to you all, Walt

Thanks Joe, I really appreciate your help. I can live with that I think. As for the other application where I need high volume and high speed, I really like the fact that it isn't a striped "RAID", and that drives that aren't being used can be spun down automagically. That's a REAL BIG plus in battery powered systems. This is the first system that has that feature built-in that I have seen. I was hoping I wouldn't have to try and implement that on my own. Thanks again Joe, Walt

Thanks, I was a bit imprecise with the "multiple terbytes" statement. In a single mission, which may cover several days, multiple terabytes would apply. How about the single disk configuration? I can't find anything in the documentation saying what a minimum configuration is. I'd hate to have to use two different products for each NAS. Walt

I've tried to get a response from Lime Technology with no reply, so I thought I'd try the forums. I'm a noobie to unRAID so this question may be considered stupid. Luckily, I'm immune to being embarassed. I have two possible applications in mind. One is for low to moderate volume medium speed data. This is for a standard side scan sonar. Nothing special. The other is high volume, high speen data. When I say high volume, I mean multiple terabytes of data in a day. High speed is about 90 megabits/s. This is for a bathymetric, synthetic aperture side scan sonar. All of these will be housed in an underwater pressure vessel and powered by batteries. Reffering to the first application, what is the minimum configuration for unRAID, hardware wise. Can I use just a single disk? I have very little space to work with. Reffering to the second application, how fast can I store data. I'll be using a pc-104+ board with a gigabit interface, 2 gigs of RAM and a 1.6 gig Intel duo-core processor. Thanks, Walt