Fault-Tolerance And Management Features; Changing Capacity And Raid Levels - HP D5970A - NetServer - LCII Configuration Manual

Chapter 1
modules to be moved to an HP NetRAID-3Si adapter without losing data
readability.
Be sure to check your system's PCI I/O slot availability and any slot restrictions
before purchasing another adapter.

Fault-Tolerance and Management Features

Fault-Tolerance features include the following:
Automatic failed-drive detection with Autorebuild (automatic rebuild with
a hot spare or when a drive is replaced)
Manual hot-swap replacement
Management features include the following:
Monitoring of HP NetRAID configuration, data parity consistency, and
SNMP error messages
Rapid online configuration change and capacity expansion without the
need to first back up all data, reconfigure the array, and reload the data

Changing Capacity and RAID Levels

The integrated HP NetRAID controller can expand capacity and change RAID
levels of logical drives without powering down the server.
Online Capacity Expansion: You can add a physical drive to a RAID 0,
3, or 5 logical drive. This can be an online operation if you are running
Microsoft Windows NT or Novell NetWare. (Preparations for capacity
expansion must be made, as described in Chapter 6, "Preparing for Online
Capacity Expansion.")
Online Capacity Reduction: You can remove a physical drive from a
RAID 1, 3, or 5 logical drive as part of an online operation.
Online Changes to RAID Levels: You can convert a RAID 1, 3, or 5
logical drive to RAID 0.
NOTE You cannot perform online conversions of logical drives that
span arrays (RAID level 10, 30, or 50).
4
Introduction