HP P3410A HP NetRAID 1M/2M Installation & Configuration - Page 15

Chapter 1 Introduction Once disk modules are configured for HP NetRAID-1M or 2M adapters, they can be moved to different HP NetRAID-1M or 2M adapters, but not to earlier generation adapters. See Chapter 8, "Upgrading to an HP NetRAID-1M or HP NetRAID-2M Adapter," for details. 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 • Battery-backed cache memory (HP NetRAID-2M only) Management features include the following: • Monitoring of adapter 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 HP NetRAID-1M and 2M adapters 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 or 5 logical drive. This can be an online operation if you are running Microsoft Windows 2000, Windows NT, or Novell NetWare versions 4.2 and 5.x. Otherwise, capacity expansion is an offline operation only. (Preparations for capacity expansion must be made, as described in Chapter 7, "Preparing for Online Capacity Expansion.") • Online Changes to RAID Levels: You can convert a RAID 1 or 5 logical drive to RAID 0. NOTE You cannot perform online conversions of logical drives that span arrays (RAID level 10 or 50). 7