Today i bought a new disk to my server - the newest 1.5TB Seagate. I replaced it with my old parity drive and started parity sync. What is wrong is the speed which varies from 2MB/s to 50MB/s. It's very irregular and changes every second.

 

Look at the screen:

 

Here's my syslog: http://rapidshare.com/files/154665339/syslog.rar.html

There's nothing wrong, don't even peek at the numbers until you've passed at least 3%, or around 10 gigs.  You are only at 0.0%!  There are usually wild fluctuations for the first few percent, completely normal.

 

There is one issue in your syslog, which you may already know about.  It is polling for a UPS driver every 5 seconds, and logging its inability to find the UPS unit, because the driver is not connected.  If this code is written well, then it is probably not slowing things down, but it is a potential 'drag' on the system.

A tip about the screen capture:  You obviously have a wide screen.  It is helpful for users with much smaller screens if you first drag the right margin way in, before capturing the screen, then restore the right margin to where you had it.  It also makes a smaller image file to attach.

There's nothing wrong, don't even peek at the numbers until you've passed at least 3%, or around 10 gigs.  You are only at 0.0%!  There are usually wild fluctuations for the first few percent, completely normal.

 

There is one issue in your syslog, which you may already know about.  It is polling for a UPS driver every 5 seconds, and logging its inability to find the UPS unit, because the driver is not connected.  If this code is written well, then it is probably not slowing things down, but it is a potential 'drag' on the system.

 

It finished at night. Until first 6% the speeds had been insane as described above. Then, they stabilized and started to be around 50MB/s all the time (untill the progress reached 500GB and unraid started to fill parity disk with zeros - they grew up to 110MB/s).

 

Can you give me a piece of advice how i can solve the problem with my ups? I've got libupnp 1.6.6, ushare 1.1a and nut 2.2.1 packages itegrated and my go script looks like that:

#!/bin/bash
# Start the Management Utility
/usr/local/sbin/emhttp &
#
fromdos < /boot/config/powerdown > /sbin/powerdown
chmod u+x /sbin/powerdown
#
echo nameserver 192.168.1.1 >/etc/resolv.conf
echo 192.168.1.2 tower >>/etc/hosts
route add -net 239.0.0.0 netmask 255.0.0.0 eth0
#
cp /boot/config/vsftpd.conf /etc
#
groupadd ups
useradd -g ups nut
mkdir -p /var/state/ups
chmod 0770 /var/state/ups
chown root:ups /var/state/ups
chmod 0660 /dev/ttyS0
chown root:ups /dev/ttyS0
cp /boot/config/ups/* /etc/ups
chown root:ups /etc/ups/*
chmod 0640 /etc/ups/*
mkdir /var/state/ups/upssched
chown root:ups /var/state/ups/upssched
chmod 770 /var/state/ups/upssched
chmod 777 /sbin/powerdown
/usr/bin/upsdrvctl start
/usr/sbin/upsd
/usr/sbin/upsmon
chmod 777 /var/run/upsmon.pid
#
sleep 5
for i in /dev/md*
do
    blockdev --setra 2048 $i
done
sleep 5
#
ushare -D -c /mnt/user/Multimedia