User`s guide

MIRROR

disk-device-name1 container-name

POLICY=BEST_FIT

POLICY=BEST_PERFORMANCE

NOPOLICY (Default)

The POLICY qualiﬁer speciﬁes the replacement policy to be used when a

mirrorset member within the mirrorset fails.

BEST_FIT gives highest priority to ﬁnding a replacement device within the

spareset that most closely matches the sizes of the remaining members of the

mirrorset. If more than one device in the spareset is the correct size, the device

that gives the best performance is selected.

BEST_PERFORMANCE (default) gives highest priority to ﬁnding a replacement

device within the spareset that results in the best performance of the mirrorset

(the device should be on a different port). If more than one device in the spareset

has the best performance, the device that most closely matches the size of the

remaining members of the mirrorset is selected.

NOPOLICY retries a failing device from the mirrorset without selecting a

replacement. This causes the mirrorset to run with less than the nominal

number of members until a BEST_FIT or BEST_PERFORMANCE policy is

selected, or a member is manually replaced in the mirrorset.

Examples

CLI> MIRROR DISK210 MIRROR5

Creates a one-member mirrorset from a DISK210 (a single disk).

B–44 Command Line Interpreter