Fujitsu PRIMERGY TX200 S6 User manual

Operating Manual - English
PRIMERGY TX200 S6
Server
Operating Manual
Edition July 2010

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Copyright and Trademarks
Copyright © 2010 Fujitsu Technology Solutions GmbH.
All rights reserved.
Delivery subject to availability; right of technical modifications reserved.
All hardware and software names used are trademarks of their respective manufacturers.
– The contents of this manual may be revised without prior notice.
– Fujitsu assumes no liability for damages to third party copyrights or other rights arising from
the use of any information in this manual.
– No part of this manual may be reproduced in any without the prior written permission of
Fujitsu.
Microsoft, Windows, Windows Server, and Hyper V are trademarks or registered trademarks of
Microsoft Corporation in the USA and other countries.
Intel and Xeon are trademarks or registered trademarks of Intel Corporation or its subsidiaries
in the USA and other countries.

TX200 S6 Operating Manual
Before reading this manual
For your safety
This manual contains important information for safely and correctly using this
product.
Carefully read the manual before using this product. Pay particular attention to
the accompanying manual "Safety notes and other important information" and
ensure these safety notes are understood before using the product. Keep this
manual and the manual "Safety notes and other important information" in a safe
place for easy reference while using this product.
Radio interference
This product is a "Class A" ITE (Information Technology Equipment). In a
domestic environment this product may cause radio interference, in which case
the user may be required to take appropriate measures. VCCI-A
Aluminum electrolytic capacitors
The aluminum electrolytic capacitors used in the product's printed circuit board
assemblies and in the mouse and keyboard are limited-life components. Use of
these components beyond their operating life may result in electrolyte leakage
or depletion, potentially causing emission of foul odor or smoke.
As a guideline, in a normal office environment (25°C) operating life is not
expected to be reached within the maintenance support period (5 years).
However, operating life may be reached more quickly if, for example, the product
is used in a hot environment. The customer shall bear the cost of replacing
replaceable components which have exceeded their operating life. Note that
these are only guidelines, and do not constitute a guarantee of trouble-free
operation during the maintenance support period.
High safety use
This product has been designed and manufactured for general uses such as
general office use, personal use, domestic use and normal industrial use. It has
not been designed or manufactured for uses which demand an extremely high
level of safety and carry a direct and serious risk to life or body if such safety
cannot be ensured.

Operating Manual TX200 S6
These uses include control of nuclear reactions in nuclear power plants,
automatic airplane flight control, air traffic control, traffic control in mass
transport systems, medical devices for life support, and missile guidance control
in weapons systems (hereafter, "high safety use"). Customers should not use
this product for high safety use unless measures are in place for ensuring the
level of safety demanded of such use. Please consult the sales staff of Fujitsu if
intending to use this product for high safety use.
Measures against momentary voltage drop
This product may be affected by a momentary voltage drop in the power supply
caused by lightning. To prevent a momentary voltage drop, use of an AC
uninterruptible power supply is recommended.
(This notice follows the guidelines of Voltage Dip Immunity of Personal
Computer issued by JEITA, the Japan Electronics and Information Technology
Industries Association.)
Technology controlled by the Foreign Exchange and Foreign Trade
Control Law of Japan
Documents produced by Fujitsu may contain technology controlled by the
Foreign Exchange and Foreign Trade Control Law of Japan. Documents which
contain such technology should not be exported from Japan or transferred to
non-residents of Japan without first obtaining authorization in accordance with
the above law.
Harmonic Current Standards
This product conforms to harmonic current standard JIS C 61000-3-2.
Only for the Japanese market:
About SATA hard disk drives
The SATA version of this server supports hard disk drives with SATA / BC-SATA
storage interfaces. Please note that the usage and operation conditions differ
depending on the type of hard disk drive used.
Please refer to the following internet address for further information on the
usage and operation conditions of each available type of hard disk drive:
http://primeserver.fujitsu.com/primergy/harddisk/

TX200 S6 Operating Manual
Only for the Japanese market:
IAlthough described in this manual, some sections do not apply to the
Japanese market. These options and routines include:
– USB Flash Module (UFM)
– CSS (Customer Self Service)

Operating Manual TX200 S6

TX200 S6 Operating Manual
Contents
1 Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.1 Concept and target groups for this manual . . . . . . . . . 12
1.2 Documentation overview . . . . . . . . . . . . . . . . . . . 12
1.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.4 Notational conventions . . . . . . . . . . . . . . . . . . . . 25
1.5 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . 26
2 Installation steps, overview . . . . . . . . . . . . . . . . . . 29
3 Important information . . . . . . . . . . . . . . . . . . . . . 31
3.1 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . 31
3.2 ENERGY STAR . . . . . . . . . . . . . . . . . . . . . . . . . 39
3.3 CE conformity . . . . . . . . . . . . . . . . . . . . . . . . . 40
3.4 FCC Class A Compliance Statement . . . . . . . . . . . . . 40
3.5 Transporting the server . . . . . . . . . . . . . . . . . . . . 41
3.6 Notes on installing the server in the rack . . . . . . . . . . 42
3.7 Environmental protection . . . . . . . . . . . . . . . . . . . 43
4 Hardware installation . . . . . . . . . . . . . . . . . . . . . . 45
4.1 Unpacking the server . . . . . . . . . . . . . . . . . . . . . 46
4.2 Setting up the floorstand model . . . . . . . . . . . . . . . . 47
4.2.1 Mounting the anti-tilt bracket . . . . . . . . . . . . . . . . . . . 48
4.3 Installing/removing the rack model . . . . . . . . . . . . . . 49
4.3.1 Rack system requirements . . . . . . . . . . . . . . . . . . . 49
4.3.2 Installation in PRIMECENTER/DataCenter/
19-inch standard rack . . . . . . . . . . . . . . . . . . . . . . 52
4.3.3 Installation in 3rd party racks . . . . . . . . . . . . . . . . . . 57

Operating Manual TX200 S6
Contents
4.4 Connecting devices to the server . . . . . . . . . . . . . . . 59
4.5 Connecting the server to the mains . . . . . . . . . . . . . . 60
4.5.1 Using cable ties . . . . . . . . . . . . . . . . . . . . . . . . . . 62
4.6 Notes on connecting/disconnecting cables . . . . . . . . . . 63
5 Starting up and operation . . . . . . . . . . . . . . . . . . . . 65
5.1 Access to the drives (floorstand model) . . . . . . . . . . . . 65
5.1.1 Access to the accessible drives . . . . . . . . . . . . . . . . . . 65
5.1.2 Access to the HDD modules . . . . . . . . . . . . . . . . . . . 67
5.2 Control elements and indicators . . . . . . . . . . . . . . . . 68
5.2.1 Front of server . . . . . . . . . . . . . . . . . . . . . . . . . . 68
5.2.1.1 ID card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
5.2.1.2 Control elements . . . . . . . . . . . . . . . . . . . . . . . 69
5.2.1.3 LEDs on the control panel . . . . . . . . . . . . . . . . . . . 70
5.2.1.4 Indicators on the drives . . . . . . . . . . . . . . . . . . . . 71
5.2.2 Rear of server . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
5.2.2.1 Indicators on the connector panel . . . . . . . . . . . . . . . 73
5.2.2.2 Indicators on the hot-plug power supply unit . . . . . . . . . 76
5.3 Switching the server on and off . . . . . . . . . . . . . . . . 77
5.4 Configuring the server . . . . . . . . . . . . . . . . . . . . . 79
5.4.1 Configuring the onboard SATA controller . . . . . . . . . . . . . 79
5.4.2 Configuring the SAS/SATA RAID controller . . . . . . . . . . . . 79
5.4.3 Configuring the server and installing the operating system
with the ServerView Installation Manager . . . . . . . . . . . . 80
5.4.4 Configuring the server and installing the operating system
without the ServerView Installation Manager . . . . . . . . . . . 81
5.5 Cleaning the server . . . . . . . . . . . . . . . . . . . . . . . 82
6 Property and data protection . . . . . . . . . . . . . . . . . . 83
6.1 BIOS Setup security functions . . . . . . . . . . . . . . . . . 83
7 Troubleshooting and tips . . . . . . . . . . . . . . . . . . . . 85
7.1 Power-on indicator remains unlit . . . . . . . . . . . . . . . . 85
7.2 Server switches itself off . . . . . . . . . . . . . . . . . . . . 86

TX200 S6 Operating Manual
Contents
7.3 Screen remains blank . . . . . . . . . . . . . . . . . . . . . 86
7.4 Flickering stripes on monitor screen . . . . . . . . . . . . . 87
7.5 No screen display or display drifts . . . . . . . . . . . . . . 87
7.6 Incorrect date and time . . . . . . . . . . . . . . . . . . . . 88
7.7 Drives reported as "dead" when starting system . . . . . . 88
7.8 Added drive reported as defective . . . . . . . . . . . . . . 89
7.9 Error message on screen . . . . . . . . . . . . . . . . . . . 89
8 CSS components . . . . . . . . . . . . . . . . . . . . . . . . 91
8.1 Hot-plug components . . . . . . . . . . . . . . . . . . . . . 92
8.1.1 Hot-plug power supply units (optional) . . . . . . . . . . . . . . 92
8.1.1.1 Replacing the hot-plug power supply unit . . . . . . . . . . 92
8.1.2 Hot-plug hard disk drives . . . . . . . . . . . . . . . . . . . . 93
8.1.2.1 3.5-inch HDD module and dummy module . . . . . . . . . . 95
8.1.2.2 2.5-inch HDD module and dummy module . . . . . . . . . . 96
8.1.2.3 Handling hard disk drives and HDD modules . . . . . . . . 97
8.1.2.4 Floorstand: removing the hard disk cover . . . . . . . . . . 98
8.1.2.5 Removing/installing the dummy module . . . . . . . . . . . 99
8.1.2.6 Installing the HDD module . . . . . . . . . . . . . . . . . . 100
8.1.2.7 Removing the HDD module . . . . . . . . . . . . . . . . . 102
8.2 Non-hot-plug components . . . . . . . . . . . . . . . . . . . 103
8.2.1 Opening the server and identifying the defective
CSS component . . . . . . . . . . . . . . . . . . . . . . . . . 104
8.2.1.1 Opening the server . . . . . . . . . . . . . . . . . . . . . . 104
8.2.1.2 Removing system fan 2 (and 4) . . . . . . . . . . . . . . . 105
8.2.1.3 Removing system fan 1 (and 3) . . . . . . . . . . . . . . . 106
8.2.1.4 Identifying a CSS component . . . . . . . . . . . . . . . . 107
8.2.2 Replacing a memory module . . . . . . . . . . . . . . . . . . 108
8.2.2.1 Removing a defective memory module . . . . . . . . . . . 108
8.2.2.2 Installing a new memory module . . . . . . . . . . . . . . . 108
8.2.3 Replacing the system fan . . . . . . . . . . . . . . . . . . . . 109
8.2.3.1 Replacing system fan 2 (and 4) . . . . . . . . . . . . . . . 109
8.2.3.2 Replacing system fan 1 (and 3) . . . . . . . . . . . . . . . 109
8.2.4 Replacing an expansion card . . . . . . . . . . . . . . . . . . 110
8.2.4.1 Removing a defective expansion card . . . . . . . . . . . . 110
8.2.4.2 Installing a new expansion card . . . . . . . . . . . . . . . 111
8.2.5 Reinstalling the fans and closing the server . . . . . . . . . . . 112

Operating Manual TX200 S6
Contents
8.2.5.1 Installing system fan 1 (and 3) . . . . . . . . . . . . . . . 112
8.2.5.2 Installing system fan 2 (and 4) . . . . . . . . . . . . . . . 113
8.2.5.3 Closing the server . . . . . . . . . . . . . . . . . . . . . . 114
9 Appendix: server specification . . . . . . . . . . . . . . . . 115
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

TX200 S6 Operating Manual 11
1 Preface
The PRIMERGY TX200 S6 server is an Intel-based server for mid-size and
large companies. The server is suitable for use as a file server and also as an
application, information or Internet server. It is available as a floorstand or rack
model. The floorstand model can be converted to a rack model using an optional
conversion kit.
Due to its advanced hardware and software components, the PRIMERGY
TX200 S6 server offers a high level of data security and availability. These
components include hot-plug HDD modules, optional hot-plug power supply
units, optional redundant system fans, the Server Management ServerView
Suite, Prefailure Detection and Analysis (PDA) and Automatic Server
Reconfiguration and Restart (ASR&R).
Security functions in the BIOS-Setup and on the system board protect the data
on the server against manipulation. Additional security is provided by the
intrusion detection and the completely lockable chassis of the floorstand model
or the lockable rack door.
The rack model occupies 5 height units in the rack.

12 Operating Manual TX200 S6
Preface
1.1 Concept and target groups for this manual
This operating manual describes how to install, set up and operate your server.
This operating manual is intended for those responsible for installing the
hardware and ensuring that the system runs smoothly. It contains all the
information you need to put your PRIMERGY TX200 S6 into operation.
To understand the various expansion options, you will need to be familiar with
the fields of hardware and data transmission and you will require a basic
knowledge of the underlying operating system.
1.2 Documentation overview
More information on your PRIMERGY TX200 S6 can be found in the following
documents:
– "Quick Start Hardware - PRIMERGY TX200 S6" leaflet
"はじめにお読みください -PRIMERGY TX200 S6" for the Japanese market
(only included as a printed copy)
– "Quick Start Software - Quick Installation Guide" DVD booklet
(only included with the ServerView Suite as a printed copy) except for the
Japanese market
– "Safety notes and other important information" manual
"安全上の注意およびその他の重要情報 " for the Japanese market
– "Warranty" manual
"保証書 " for the Japanese market
– "ServerView Suite Local Service Concept - LSC" manual
– "Returning used devices" manual and "Service Desk" leaflet
"サポート＆サービス " for the Japanese market
– "PRIMERGY TX200 S6 Server Operating Manual"
– "PRIMERGY TX200 S6 Server Options Guide"
– "System Board D2799 for PRIMERGY TX200 S6 Technical Manual"
– "D2799 BIOS Setup Utility for TX200 S6" manual

TX200 S6 Operating Manual 13
Preface
IPRIMERGY manuals are available in PDF format on the
ServerView Suite DVD 2. The ServerView Suite DVD 2 is part of the
ServerView Suite supplied with every server.
If you no longer have the ServerView Suite DVDs, you can obtain the
relevant current versions using the order number U15000-C289 (the
order number for the Japanese market: please refer to the configurator
of the server http://primeserver.fujitsu.com/primergy/system.html).
The PDF files of the manuals can also be downloaded free of charge
from the Internet. The overview page showing the online documentation
available on the Internet can be found using the URL (for EMEA market):
http://manuals.ts.fujitsu.com. The PRIMERGY server documentation can
be accessed using the Industry standard servers navigation option.
For the Japanese market please use the URL:
http://primeserver.fujitsu.com/primergy/manual.html.
Further sources of information:
– PRIMERGY Abbreviations and Glossary on the ServerView Suite DVD 2
– Manual for the monitor
– Documentation for the boards and drives
– Operating system documentation
– Information files in your operating system

14 Operating Manual TX200 S6
Preface
1.3 Features
Customer Self Service (CSS)
The PRIMERGY Customer Self Service (CSS) concept enables you to identify
and replace the affected component yourself in the case of certain error
scenarios.
In the CSS concept, you can replace the following components yourself in the
event of an error:
– Hot-plug hard disk drives
– Hot-plug power supply units
– Memory modules
– System fans
– Expansion cards
For information on replacing these components, see chapter "CSS
components" on page 91.
CSS indicators on the control panel and on the back of the PRIMERGY server
provide you with information if a CSS event arises (for more information on the
behavior of these indicators, see chapter "Starting up and operation" on
page 65 and the "ServerView Suite Local Service Concept - LSC" manual on
the ServerView Suite DVD 2).
You can also fit your server with a ServerView Local Service Panel, which
enables you to identify the type of component affected by the error directly on
the server (for more information, see the "ServerView Suite Local Service
Concept - LSC" manual on the ServerView Suite DVD 2).
In addition, CSS errors are displayed in the ServerView Operations Manager,
the server management software from Fujitsu.
In the event of errors, the ServerView Operations Manager refers you directly to
the affected component and its order information in the Illustrated Spares
catalog of the server in question. (This feature is not available for the Japanese
market.)

TX200 S6 Operating Manual 15
Preface
System board
The features of the system board are described in the technical manual for the
system board D2799 for the hardware and in the BIOS Setup manual for the
firmware.
Trusted Platform Module (TPM)
A Trusted Platform Module (TPM) for safer storage of keys can be implemented
as an option. This module enables programs from third party manufacturers to
store key information (e.g. drive encryption using Windows Bitlocker Drive
Encryption).
The TPM is activated via the BIOS system (for more information, refer to the
“D2799 BIOS Setup Utility for TX200 S6" manual).
VCAUTION!
– When using the TPM, note the program descriptions provided by the
third party manufacturers.
– You must also create a backup of the TPM content. To do this, follow
the third party manufacturer's instructions. Without this backup, if the
TPM or the system board is faulty you will not be able to access your
data.
– If a failure occurs, please inform your service about the TPM
activation before it takes any action, and be prepared to provide them
with your backup copies of the TPM content.
Slots for expansion cards
The server can be expanded flexibly via six slots (one 32-bit PCI, two
PCIe Gen2 x8, and three PCIe Gen2 x4).
PCIe Gen2 doubles the bandwidth of currently existing PCIe busses and allows
improved system performance.

16 Operating Manual TX200 S6
Preface
Hard disk drives
The server is shipped with one of the following drive cages:
– For up to four 3.5-inch SAS/SATA hard disk drives:
Up to four SAS/SATA HDD modules can be used in the drive cage. Each
HDD module can accommodate a SAS/SATA hard disk drive with a
maximum height of 1 inch. The module is connected to the SAS/SATA
backplane wirelessly. This allows HDD modules to be plugged in and pulled
out easily.
As an option, a hard disk extension box (with a maximum of two SAS/SATA
HDD modules) can be installed (see section "Accessible drives" on
page 18).
IUp to four SATA hard disk drives are controlled by the onboard SATA
controller. An additional SAS/SATA RAIDcontroller must be installed
to control additional SATA hard disk drives or SAS hard disk drives.
– For up to eight 2.5-inch SAS/SATA hard disk drives:
Up to eight SAS/SATA HDD modules can be used in the drive cage. Each
HDD module can accommodate an SAS/SATA hard disk drive with a 2.5-
inch format. The modules are connected to the SAS/SATA backplane
wirelessly. This allows HDD modules to be plugged in or pulled out easily.
As an option, a hard disk extension box (with a maximum of eight SAS/SATA
HDD modules) can also be installed (see section "Accessible drives" on
page 18).
IUp to eight SAS/SATA hard disk drives are controlled by the
SAS/SATA RAID controller already installed.The hard disk extension
box for 2.5-inch SAS hard disk drives requires an additional
SAS/SATA RAID controller.
If the server has the corresponding RAID configuration, HDD modules can also
be replaced during operation.

TX200 S6 Operating Manual 17
Preface
Onboard SATA controller
A SATA controller is integrated on the system board; up to four SATA hard disk
drives can be connected to the controller. The LSI Embedded MegaRAID
software (SATA Software RAID) supports RAID levels 0, 1 and 10.
For more information on configuring the controller, see section "Configuring the
onboard SATA controller" on page 79.
SAS/SATA RAID controller
The server is available with the following SAS/SATA RAID controllers for
operating the internal SAS/SATA hard disk drives:
– Modular RAID 0/1 controller with "Integrated Mirroring Enhanced"
(SAS IME) for SAS1.0
RAID levels 0, 1 and 1E are supported for internal hard disk drive
configurations.
IFor the Japanese market only RAID level 1 is supported for internal
hard disk drive configurations.
– Modular RAID 0/1 controller with “MegaRAID functionality”
(SAS MegaRAID) for SAS1.0 and SAS2.0
RAID levels 0, 1,10 and 1E are supported for internal hard disk drive
configurations.
– Modular RAID 5/6 controller with "MegaRAID functionality"
(SAS MegaRAID) for SAS1.0 and SAS2.0
RAID levels 0, 1, 10, 1E, 5, 50, 6 and 60 are supported for internal hard disk
drive configurations. As an option, a battery backup unit (BBU) can save the
memory content even if the power fails. Cache memory size of 512 Mbyte is
available.
IFor more information on configuring the controller, see section
"Configuring the onboard SATA controller" on page 79.
Further information on SAS/SATA RAID controllers is provided in the
"Modular RAID Controller Installation Guide" (on ServerView Suite
DVD 2 under Industry Standard Servers - Expansion Cards - Storage Adapters
- LSI RAID / SCSI Controllers).

18 Operating Manual TX200 S6
Preface
Further information on other SAS/SATA RAID controllers (e.g. for
operating external SAS/SATA hard disk drives or tape drives) is available
on ServerView Suite DVD 2 under Industry Standard Servers - Expansion
Cards - Storage Adapters - LSI RAID / SCSI Controllers.
Accessible drives
The server has three 5.25-inch bays that can be used in various ways:
The individual bays can be equipped with any 3.5-inch drives (height:1.6 inch).
You can install a multibay (DVD-LSD/LSP) in the top bay. You can install a
slimline DVD drive and the ServerView Local Service Display or ServerView
Local Service Panel in the multibay (DVD-LSD/LSP).
The following expansion boxes are also available depending on the hard disk
configuration selected:
– With one drive cage for up to two 3.5-inch SAS hard disk drives:
You can install an extension box for up to two 3.5-inch SAS hard disk drives
in the two bottom bays. This box has bays for a slimline DVD drive, the
ServerView Local Service Display/ServerView Local Service Panel, and up
to two 3.5-inch SAS hard disk drives.
– With a drive cage for up to eight 2.5-inch SAS/SATA hard disk drives:
You can install an extension box for up to eight 2.5-inch SAS/SATA hard disk
drives in the two bottom bays.
IThe HDD extension box for 2.5-inch SAS/SATA hard disk drives
requires an additional SAS/SATA RAID controller.
IPlease note the following:
– A DVD drive must have been installed in order to operate the server.
– The accessible drives cannot be replaced during operation.
– Access to the accessible drives may have to be free in order to
operate tape drives (see "Access to the accessible drives" on
page 65).

TX200 S6 Operating Manual 19
Preface
Power supply
In its basic configuration the server has a permanently installed power supply
unit or a hot-plug power supply unit that adjusts automatically to any mains
voltage in the range 100 V - 240 V. Besides the hot-plug power supply unit, a
second hot-plug power supply unit can be installed optionally to serve as a
redundant power supply. If one power supply unit fails, the second power supply
unit in the redundant configuration ensures operation can continue
uninterrupted. The faulty power supply unit can be replaced during operation
(for further details see section "Hot-plug power supply units (optional)" on
page 92).
Cooling
In the standard configuration the server is cooled by two system fans and one
power supply fan.
In the optional, redundant configuration the server is cooled by four system fans
(two double fans) and one or two power supply fans. If one of the four system
fans fails, one of the two predetermined fans (system fan 3 and system fan 4,
see the "Options Guide" for the system) increases its power to ensure that the
server is cooled properly.

20 Operating Manual TX200 S6
Preface
High level of availability and data security
When memory data is accessed, 1-bit errors are identified in the main memory
and automatically corrected with the error correcting code (ECC) method. The
patented memory scrubbing function regularly starts up the EDC mechanism,
ensuring continuous data integrity.
The RDIMM memory modules used support SDDC technology (Chipkill™),
which further increases the effectiveness of memory error monitoring and
correction.
Memory modules can be protected against failure by mirroring (Memory
Mirroring). Memory Mirroring is roughly comparable to RAID level 1 for hard disk
arrays. The basic configuration requires two identical memory modules in two
different banks.
Support is likewise provided for hot-spare memory technology, in which a
memory bank is used like a replacement bank. If a memory module fails, the
bank with the defective memory is automatically deactivated and the
replacement bank is activated (provided it has been configured for appropriately
in the BIOS). The deactivated memory bank is no longer used and the faulty
memory module can be replaced during the next system maintenance. In order
to be able to use the hot-spare memory function, all occupied memory banks
have to be equipped with identical memory modules.
ASR&R (Automatic Server Reconfiguration and Restart) restarts the system in
the event of an error and automatically "hides" the defective system
components.
The PDA (Prefailure Detection and Analysis) technology from Fujitsu
Technology Solutions analyzes and monitors all components that are critical for
system reliability.
Optional RAID controllers support RAID levels like 0, 1, 5, ... and increase
system availability.
The hot-plug HDD modules provide additional availability.