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Facilidade de uso
Drive Roaming The HP NetRAID controller
DAC automatically replaces and rebuilds the data
stores configuration information both in NVRAM
from the failed disk onto the hot spare disk. The
(non-volatile RAM) on the controller and on the
HP NetRAID controller allows a single hot spare
disk drives. It protects the configuration settings
to be used across multiple channels, lowering the
in the event of a disk drive or controller failure.
cost of overhead associated with high
Drive roaming allows administrators to
availability. Multiple hot spares may also be
physically move drives within a server or
defined, allowing you to trade off high availability
between servers without losing valuable
and cost.
configuration information. (Configuration
Battery Backup for Cache Memory The HP
information can also be stored on a file, a
NetRAID Adapter includes a 60-hour battery
network drive, or a floppy disk.) Unlike online
backup for 4MB of onboard cache, providing
capacity expansion and RAID level migration,
protection from power supply interruptions to the
drive roaming is done at system boot-up time. If a
server and preventing cache data loss. It is worth
server fails, the disk drives can be moved to a
noting that 4MB is an optimal cache size for
backup server and inserted in any order. The HP
performance as well as for maximizing battery
NetRAID controller in the backup server will read
life. A larger cache would substantially reduce
the configuration from the drives and your
the length of the battery backup window.
system will be up and running.
Audible alert The HP NetRAID Adapter has an
Flexibility and Availability
onboard tone generator to sound an audible
alarm when a drive fails, is degraded, or is
With the HP NetRAID Adapter, reliability in case
rebuilt. The audible alert is especially useful in an
of disk or power failures is provided by three
environment with many servers in one area. It
special features: hot swaps, hot spares, and
alerts the operator to the problem so that action
battery backup for cache. All three techniques
can be taken quickly. The alarm can be enabled,
offer significant advantages in restoring normal
disabled, or temporarily silenced.
operation after a failure, especially in conjunction
with server management systems and servers in
Configuration and Management
remote environments. High reliability is also
made possible by the three additional RAID
No matter how data is stored on disks, the ability
levels—RAID-10, RAID-30, and RAID-50—that the
to easily configure and manage the disk system is
HP NetRAID Adapter provides. With these RAID
critical. The HP NetRAID Assistant provides an
levels, two physical disk drive failures (one in
easy-to-use, object-oriented graphical user
each array) can occur and data will still be
interface (GUI) that makes installation,
protected.
configuration and management easy. During
configuration, HP NetRAID Assistant makes it
Hot-Swap Drives Hot-swap drives allow server
easy to define disk arrays and logical drives,
drives to be easily removed and replaced without
designate hot spares, and set the rebuild rate and
powering down the server. Fixed drives are
various logical drive parameters. After
typically cabled into server enclosures. Replacing
configuration, the HP NetRAID Assistant makes
a fixed drive involves powering down the server,
it possible to monitor and manage physical and
opening the enclosure, unplugging the drive’s
logical drives, add capacity, and migrate RAID
data and power cables, installing the new drive,
levels on the fly.
and putting everything back together again. Hot-
swap drives work just like drawers—you slide
For remote management, HP NetRAID Assistant
them in and out, with all power and cabling
can be run on a Microsoft Windows NT or
issues being handled transparently. In addition to
Windows 95 client and can monitor all DACs in
ease of set up, hot-swap drives can allow much
all Microsoft Windows NT or Novell NetWare
faster recovery from a disk failure.
servers on the network. Password authentication
protects the security of the server.
AutoRebuild with Hot Spares Hot spare drives
provide totally unattended recovery from a drive
The HP NetRAID Adapter provides SNMP agent
failure. A hot spare is an idle, powered-on,
capability under Microsoft Windows NT, Novell
standby disk module ready for use should
NetWare, IBM OS/2, and SCO UNIX to allow for
another disk module fail. When a disk fails, the
centralized event notification through the HP
... Este manual também é adequado para os modelos :
Computadores - HP NetServer LC 2000 (25.02 kb)
Computadores - HP NetServer LC 2000r (25.02 kb)
Computadores - HP NetServer LC II (25.02 kb)
Computadores - HP NetServer LC Plus (25.02 kb)