SANRAD I3.1.1205 - Manual (Page 109)

Chapter 6: Volume Configuration 6-17
S WITCH P ARAMETER D EFINITION S TATUS E XAMPLE
–nbc NUMBER OF
CHILDREN N UMBER OF
VOLUMES OR
CHILDREN FROM
WHICH TO BUILD
S TRIPED VOLUME
OPTIONAL
DEFAULT : 2
4
–ch CHILD FIRST VOLUME
( CHILD ) TO WRITE
TO
MANDATORY Simple2
–ch CHILD SECOND VOLUME
( CHILD ) TO WRITE
TO
MANDATORY Simple4
–ch CHILD THIRD VOLUME
( CHILD ) TO WRITE
TO
MANDATORY Simple8
–ch CHILD FOURTH VOLUME
( CHILD ) TO WRITE
TO
MANDATORY Simple10
The system default for the number of children data is being striped across is
two. Therefore, you only need to specify the number of children for numbers
greater than two.
Example:
If you are working in
a V-Switch cluster,
this volume must be
configured on both
V-Switches.
In Figure 6-12, a striped volume, Stripe 1, is created across four children:
Simple 2, Simple 4, Simple 8 and Simple 10. The striped unit size is 100
blocks, meaning that in each read/write function, 100 blocks of data are
read/written into Simple 2; then 100 blocks into Simple 4;. then 100 blocks
into Simple 8; then 100 blocks into Simple 10 and then back again to 100
blocks in Simple 2 until the end of the data chunk.
volume create stripe –vol Stripe1 –nbc 4 –sus 100 –ch
Simple2 –ch Simple4 –ch Simple8 –ch Simple10