modena@makoto 14:03:14/140428(~)% \
time sudo dd if=/export/NetBSD-6.1.4-amd64-install.img of=/dev/rsd0d bs=64m
8+1 records in
8+1 records out
576716800 bytes transferred in 146.675 secs (3931936 bytes/sec)
0.00s 1.29s 2:26.75 0% 0+0k 0+1io 6pf+0w

This USB memory does not boot (saying missing OS)

modena@makoto 14:29:34/140428(~)% \
time sudo dd if=/export/NetBSD-6.1.4-amd64-install.img of=/dev/rsd0d bs=4k 
140800+0 records in
140800+0 records out
576716800 bytes transferred in 427.095 secs (1350324 bytes/sec)
0.13s 2.90s 7:07.13 0% 0+0k 0+1io 0pf+0w

This one boots. bs=64m should NOT be used.

を見て、 MaxLogins を知るなど。

wget http://www.teamits.com/resources/maxlogins.txt

I had a experience to copy 250GB disk on the same machine.
2012/05/01/
It took 9836.292 secs at that time. (DL320/G3).
Today, I did the same thing on HP Proliant Microserver (Old model). It took 8356 secs.

ttyp4:makoto@catania 23:48:34/140428(~)> dmesg | grep ^wd
wd0 at atabus0 drive 0ahcisata0 port 2: device present, speed: 3.0Gb/s
wd0: quirks 2<FORCE_LBA48>
wd0: drive supports 16-sector PIO transfers, LBA48 addressing
wd0: 232 GB, 484518 cyl, 16 head, 63 sec, 512 bytes/sect x 488395055 sectors
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133)
wd0(ahcisata0:0:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133) (using DMA)

wd1 at atabus2 drive 0: <Hitachi HDT725025VLA380>
wd1: drive supports 16-sector PIO transfers, LBA48 addressing
wd1: 232 GB, 484521 cyl, 16 head, 63 sec, 512 bytes/sect x 488397168 sectors
wd1: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133)
wd1(ahcisata0:2:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133) (using DMA)

dd if=/dev/rwd0d of=/dev/rwd1d bs=64m
... 
(^T) 
3506+0 records in
3506+0 records out
235283677184 bytes transferred in 7635.024 secs (30816363 bytes/sec)
...
dd: /dev/rwd0d: Input/output error
3726+0 records in
3726+0 records out
250047627264 bytes transferred in 8356.836 secs (29921327 bytes/sec)

Trying to boot copied disk. Getting fsck. Too silly to do this. And the OS is too old.