Hello everybody!
Just a question.

I just bought a couple of these hard-drives (http://www.amazon.com/gp/product/B001D7 ... 03_s00_i00) to use with IPI Recorder... Would these work?

I understand that the requirement for the HDD is to have a 55meg per second speed... but I couldnt find any reference on speed other than RPM, My HD are 7200 RPM. I guess this is a pretty good speed for todays standards, but Is this enough?.

Please, any help is greatly appreciated.
e.

You can search the internet for write speed benchmarks on specific hard drives. However, external hard drives are limited with connection speed, and in your case it is USB 2.0 - that's 480Mbit/s (or 60Mbytes/s). But this is theoretical limit, real speed may be lower - about 50MBytes/s. This still may be enough depending on your camera configuration and compression options used for recording. However, as speed is critical for recording purposes, we recommend to use internal drives or external drives with USB 3.0 connection (this may be HDD, SSD or regular flash stick of high capacity).
Nevertheless, as you already bought these drives, just make a practical test when you've got them in your hands.

If you can add a UBS 3.0 card in your computer (assuming you don't already have a USB 3.0 controller,) I would recommend sending the drives back and getting USB 3.0 drives. The transfer rate for USB 3.0 with the 3.0 controller should be considerably higher than USB 2.0.

That, or as vmaslov already stated, get an internal SSD. This is what I use as a dedicated capture drive, and it solved any dropped frames issues I used to have.

G.

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Thank you both!!!
Following your suggestion, I will use a second internal hard drive I have connected with SATA. That should do the work.

thanks

According to me 7200 rpm is more than enough..:)