Currently it is running FC20, having been continuously upgraded from almost Fedora 1 I think

I got a 2TB WD red HDD for it.

My plan is to put the OS on a USB stick ( San Disk Low Profile 64GB SDCZ33-064G-B35 ) and use the whole 2TB for Data. I'd rather not have a PATA SDD, and I do not want to lose one of the SATA ports.  Eventually I want to have a system with 4 HDDs, in a Raid 1+0 configuration to prevent data loss.

I have some questions.

1. I could use ext4 on all HDDs eventually. But I wonder, can I use ZFS? Specially I would like to have the ability to expand the single HDD into a Raid once I get the second HDD as painlessly as possible. If I use ext4 I guess I will have to backup/create raid system/reformat/restore the data. I have the idea that zfs only needs to be aware that there is a new drive and it will expand the filesystem accordingly. I'd rather not use LVM. I was burned by it once.

2. Is the USB OS ok? I do not feel I am losing that much, after all, it is a system that will be mostly on at home.
3.Should I add hibernation to it? How quickly will it come back from hibernation if someone requests data?

Is there anything I should know I am not taking into consideration?

Thanks!

JP

--
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 /\_/\  
 |O O|  pepebuho@gmail.com
 ~~~~     Javier Perez
 ~~~~          While the night runs
 ~~~~          toward the day...
  m m       Pepebuho watches
                from his high perch.