NEC Express5800/320Ma Betriebsanweisung PDF herunterladen (Seite 51)

Disk Storage Management 4-1

Chapter 4

Disk Storage Management

The following disk-management topics apply to your Express5800/320Ma system:

• “Data Fault Tolerance” on page 4-1

• “Guidelines for System Disks” on page 4-2

• “Using RDR for Fault Tolerance” on page 4-2

• “Using Volume Mirroring for Fault Tolerance” on page 4-20

• “Mirroring Disks in Your Express5800/320Ma System” on page 4-24

• “Finding a Physical Disk” on page 4-25

Data Fault Tolerance

Your Express5800/320Ma system offers two methods of ensuring data fault tolerance

and continuous availability of its disk media:

• Rapid Disk Resync (RDR), a disk-replicating technology, is supported only on the

internal disk drives.

To create striped volumes across the mirrored internal disks, refer to the

documentation for your disk-management tool.

You choose to implement RDR, for internal disk drives, or volume-mirroring, for all

disks, during the software installation and configuration procedure. However, you can

upgrade your disks to RDR after software installation.

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NEC Express5800/320Ma Betriebsanweisung Seite 51