Siemens Nixdorf RM300 C20, Operating Manual

Page: 13 / 205

Preface
1
U24801-J-Z146-2-7600 RM300 C Models
3
D
o
k
u
s
c
h
abl
on
en V
e
rs
io
n
3
.2
v
om
2
5
.10.
9
3
©
S
ie
m
en
s
N
ix
d
o
rf
I
n
fo
rm
a
ti
o
ns
s
y
s
te
m
e A
G
199
3
Dr
u
c
k
v
o
m
12
.
0
4
.1
9
99 15
:5
0.
25
P
fad:
H:
\C
h
ri
s
to
p
h
\M
anu
al
e\
P
D
F
\R
M
\R
M
3
00C
B
e
tr
iebs
an
le
it
ung
\eng
lis
c
h
\r
m
3
00.
k
0
1 1.1
The C models of the RM300 system
This operating manual describes the C models of the RM300 system (C20, C40,
C50, C60, C62 and C80) with the Reliant UNIX
®
or SINIX
®
V5.42 operating systems.
For Release 5.43B00 the name of the SINIX operating system on RM systems was
changed to Reliant UNIX. This was a consequence of merging the UNIX variants of
Siemens Nixdorf and Pyramid Technology. The name “Reliant UNIX” is indicative of
the high reliability and availability requirements met by our standardized open
operating system in both commercial and technical environments. All the tried and
tested features of SINIX are retained in Reliant UNIX.
The RM300 system is a high-performance RISC machine based on the
MIPS
®
R4400
®
, R4700
®
, R5000
®
and R10000
®
processors.
The system also supports a wide range of controllers for I/O devices and communi-
cations. The technical expansion options are being continually extended. To find out
what is currently available, refer to your local branch of Siemens Nixdorf Informa-
tionssysteme AG (SNI).
The system may optionally be equipped with components designed to prevent errors
that can interrupt system operation or to bypass them using automatic response
mechanisms. These high-availability components guarantee largely trouble-free
operation and hence the security of the data on the system.
– Uninterruptible power supply (UPS), providing protection against power
failures
– Automation of regular backups
Regular data backups can be automated using a control program working in
conjunction with almost any external storage medium. Regular backups are
always necessary, even if you have taken other measures such as disk
mirroring or redundancy to ensure the security of your data.
– Disk mirroring
Drive and controller failures are countered by setting up primary and
secondary drives in peripherals cabinets on different controllers.
– RAID systems (Redundant Array of Independent Disks)
RAID systems can be attached to the computer as high-availability sub-
systems. If single disks fail, no data is lost and the application can continue
running. A disk failure simply results in a temporary drop in performance.