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Chapter 1 Introduction
8
Saving the Current Operating Environment
Before you start the upgrade, follow these instructions to preserve the current
operating environment.
CAUTION You must back up all disks on your system - the disk
containing the NOS and any RAID arrays. Failure to perform
this step leaves you vulnerable to potential loss of data.
1. Back up all hard disks - both the hard disk containing the NOS, and any
RAID arrays, using the backup utilities on your NOS. You will perform a
restore later to replace this data.
2. You must write down all system configuration details from the Setup,
Remote Management, and NetRAID utilities, as you will have to
reconfigure them after the system software update. For a discussion of
NetRAID implementation and usage details, refer to the HP NetRAID
Installation and Configuration Guide and HP NetRAID User Guide
manuals on the HP NetServer Online Documentation CD-ROM.
For example, note the following information:
A. Adapter:
∗ PowerFail Safeguard (Default is Enabled)
∗ Disk Spin Up Timings (Default is Automatic Spinup)
∗ Cache Flush Timings (Default: every 4 seconds)
∗ Rebuild Rate (Default: 50%)
∗ Auto Rebuild (Default: Enabled)
B. Logical Drive:
∗ RAID level
∗ Size
∗ Stripe Size (Default: 64 KB)
∗ Write Policy (Default: Write Through)
∗ Read Policy (Default: Adaptive)