S P E C I A L A D V E R T I S I N G S E C T I O N
cooling
& power
figure 3. HP ProLiant DL380 G4 server
There are two types of cooling redundancies.
Up to 12 MB DDR-2 SDRAM with online Up to 2 Intel® Xeon™ processors with an
One allows users to run their server until
spare and advanced ECC capabilities
800 MHz FSB and 1 MB of L2 Cache
they shut it down and replace the failed fan.
The other maximizes server availability by
Base hot plug fans
Base hot plug
power supply
permitting the failed fan to be changed while
Redundant hot plug
Redundant hot plug
the system is still functioning.
fan slots
power supply
HP performs hundreds of system tests
Duplex drive
on each of its ProLiant servers. During
backplane option
these tests, the fans are independently
Dual gigabit NICs
stress tested. For greater reliability, only
fans with ball bearings are used. HP servers
Integrated smart
Six Ultra320 SCSI
array U320 array
include counter-rotating fans with fixed
hot plug hard drives
control er, optional
stators, designed to produce greater airflow
128 MB BBWC
at higher flow impedances and a more
uniformly directionalized airflow.
A RAID array controller will store data
adapters, and advanced network adapter
ProLiant servers allow the addition of
temporarily in cache memory during data
teaming capabilities such as fast path failover.
a redundant power supply, or removal of an
transfers. If a power interruption occurs after
Highly available servers also require
existing redundant power supply for
data has been written to cache memory and
functionality such as HP’s industry leading
servicing at any time without interrupting
before it is written to a disk, the cached data
memory protection and Smart Array
server operation. Having a redundant power
will be lost. To avoid this problem, HP’s
controllers, as well as advanced cooling and
supply protects the server against the failure
Smart Array controllers support redundant
power technologies. And remote
of a power supply, as well as the failure of
the AC line cord. When a server is equipped
figure 4. RAID selection guide
with two power supplies, each provides
approximately half of the power required by
MOST IMPORTANT
SECONDARY IMPORTANCE
RAID LEVEL CHOICE
the system. This helps to reduce component
Cost Ef ectiveness fault tolerance ▼
RAID 6 (Advanced Data Guarding from HP)
stress, which enhances overall reliability.
(cost per usable capacity)
performance ▼
RAID 5 (RAID 0 if fault tolerance is not needed)
Smart Array
Fault Tolerance
cost ef ectiveness ▼
RAID 6 (Advanced Data Guarding from HP)
performance
▼
RAID 1+0
control ers
cost ef ectiveness ▼
RAID 5 (RAID 0 if fault tolerance is not needed)
In this context, RAID refers to Redundant
Performance
fault tolerance
▼
RAID 1+0
Array of Independent Disks. RAID
technology allows a group of disk drives to
battery-backed cache, providing battery
management capability allows the user to
be tied together to function as a single
backup for up to four days. Once the power
quickly address server requirements from
logical disk drive, providing increased
has been restored, the data in the cache is
any location. These features ensure that HP
performance and availability.
then moved to a disk.
ProLiant servers provide the availability
HP’s Smart Array controllers are
required by today’s business environment.
integrated on ProLiant servers, and support making the
a variety of RAID types including RAID
right choices
HP (NASDAQ “HPQ”) is a technology
1+0 and RAID 5. Developed and patented
Companies of all sizes and industry types are
solutions provider to consumers, businesses and
by HP, RAID 6 Advanced Data Guarding
increasingly adopting a non-stop approach to institutions globally. The company’s offerings
(ADG) is further supported on Smart Array
business operations. To support this
span IT infrastructure, global services, business
controllers. This technology creates two
approach, IT organizations must continually
and home computing, and imaging and printing.
sets of parity striped data across the disks
improve component availability.
to help ensure the system can withstand
HP ProLiant servers are the cornerstone
Intel (NASDAQ “INTC”), the world’s largest
multiple disk failures without data loss.
of a reliable IT infrastructure. When
chip maker, is also a leading manufacturer of
RAID ADG enables high levels of fault
selecting a server, IT organizations should
computer, networking and communications
tolerance in a cost-effective manner.
look for features like redundant server
products.
For more information on ProLiant servers and increasing server availability,
visit www.hp.com/go/proliantavailability or call 1-866-625-4090
© Copyright 2005 Hewlet -Packard Development Company, L.P. and Intel Corporation. Intel, the Intel logo, Intel Inside, the Intel Inside logo, Pentium, Itanium, Intel Xeon,
4a
Intel NetBurst and Intel SingleDriver are trademarks or registered trademarks of Intel or its subsidiaries in the United States and other countries. Microsoft and Windows are
U.S. registered trademarks of Microsoft Corporation. *Other names and brands may be claimed as the property of others.
5983-0552ENUC

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