Hello druck!

Wednesday January 09 2019 20:10, you wrote to A. Dumas:

 > On 08/01/2019 07:18, A. Dumas wrote:
 >> Simply get any 2.5" portable disk. It won't need external power.
 >> Make sure you use the official RPi power adapter for the Pi, though.

 > I don't know why you would even consider a conventional disc with a
 > Raspberry Pi, they are power hungry and slower than SD cards for small
 >  random access transfers, due to latency.

 > On the other hand an SSD has great random access performance, and has
 > no power issues. It's not even like its expensive - a band new SanDisk
 >  120GB SSD can be had for £20, which is only a couple a quid more
 > than a SanDisk 128GB SD card.

A SSD has its own issues using Linux - garbage collection as the cheaper one 
use a poor
controller that requires long idle times  (6-=8 hours) to process.

The only brand I have found so far that does work (with running fstrim each 
night) is
Samsung 850, 950,960 series and they are not that cheap and I have a lot of 
spare DASDs
ranging from 320Gb to 1Tb available.

I have on the Pi a BBS and web, apache and ftp servers although most if not 
all are
inactive.

The Pi does a rsync to the primary system every 6 hours and updates itself 
with current
files for the BBS which has a file base of over 15GB ( have not check in a few 
years but
growing every month). This keeps the Pi in sync most of the time :)

So if the primary system is offline I can activate the Pi to take over and 
this is a manual
start up of services as the Ram available as well as the cpu power is not 
strong enough to
handle load at least with me doing any work on it such as various applications 
including a
pilots log book and a accounting (sales, purchase,stock etc) application  to 
just name two.

These are also back up systems.

After all having spent big bucks (OK pounds) on it I am not having it sitting 
idle.
No that was not the reason for getting it but to run a specific Cobol compiler 
that is only
free when run on a Pi. This is for development experimentation only.

Vince

--- Mageia Linux v6 X64/Mbse v1.0.7.11/GoldED+/LNX 1.1.501-b20150715