Disk Drives That Are Not In Arrays - IBM Advanced SerialRAID Adapters SA33-3285-02 User Manual

Advanced serialraid adapters
Table of Contents

Advertisement

transfer operations, performance is better than that provided by RAID-1 because data
is striped across member disk drives. For short data transfer operations, performance
is better because operations are distributed across the member disk drives, and the
effect of skew is reduced. Member disk drives of a RAID-10 array can be configured
to be in separate domains. Separate domains ensure that data remains available if,
for example, a complete domain fails through loss of power.

Disk Drives That Are Not in Arrays

Disk drives that are connected to an SSA RAID adapter do not need to be members of
an array. The SSA RAID adapter handles such disk drives in the same way as a
non-RAID SSA adapter does. It transfers data directly between the disk drives and the
system, and uses no RAID functions.
|
When first installed, all disk drives are, by default, defined as system disks; that is, they
|
are not members of an array. Before they can be added to arrays, you must redefine
|
them so that the system no longer has direct access to them.
30
User's Guide and Maintenance Information

Advertisement

Table of Contents
loading

Table of Contents