We have huge amt of data in our AIX & Solaris servers to send to our offsite
vendor & don't want to install software (eg: Truecrypt) on the servers : LTO
tapes are not an option as we no longer use tapes but Data Domain
(backup to disks/VTLs) & our backup tool is not the same as our vendor's)
while transferring using sftp is going to hog the network.
What are the most portable & secure (as don't want to use weak encryption
like Blowfish) ways (without installing software but I guess standalone tool on
the Sparc & RS6000 servers are Ok) to transport the data files to the vendor?
I heard some USB HDD like those from WD comes with its encryption (is it
hardware encryption?) : do we need to install any driver/software on the
servers to move files to the HDD? I thought of connecting a laptop with
a USB HDD directly (using a Lan cross cable) to the servers' spare LAN
port & then sftp over to the USB HDD
Is partition or files-level encryption more feasible in our case?
Or should I use just a NAS (which supports sftp server) to sftp into the
NAS? Between NAS & USB HDD, which is more practical?