Command Reference Guide

Specifies that if a host write results in the allocation of a new data page that is only partially filled
by the host write, then a zero-fill is performed on the unwritten portion of the data page. This
ensures that the host cannot read data from deleted volumes or snapshot. The default allocation
page size is 16 KB.
no_tp_bzero
Specifies that the zero-fill operation is bypassed on the allocation of partially written data pages.
-usr_cpg <usr_cpg>
Specifies the name of the CPG from which the user space will be allocated.
-usr_aw <percent>
Indicates a user space allocation warning. Generates a warning alert when the user data space
of the TPVV exceeds the specified percentage of the virtual volume size.
-usr_al <percent>
Indicates the user space allocation limit. The user space of the TPVV is prevented from growing
beyond the indicated percentage of the virtual volume size. After this limit is reached, any new
writes to the virtual volume will fail.
-snp_cpg <snp_cpg>
The name of the CPG from which the snapshot space is allocated.
-snp_aw <percent>
Provides a snapshot space allocation warning. Generates a warning alert when the snapshot space
of the virtual volume exceeds the specified percentage of the virtual volume size.
-snp_al <percent>
Provides a snapshot space allocation limit. The snapshot space of the virtual volume is prevented
from growing beyond the indicated percentage of the virtual volume size.
• The following options are only used for CPG templates:
–aw <percent>
Specifies the percentage of used snapshot administration or snapshot data space that results in a
warning alert. A percent value of 0 disables the warning alert generation. The default is 0. This
option is deprecated and will be removed in a subsequent release.
–sdgs <size>[g|G|t|T]
Specifies the growth increment, the amount of logical disk storage created on each auto-grow
operation. The default and minimum growth increments vary according to the number of controller
nodes in the system. If <size> is non-zero it must be 8 G or bigger. Size can be specified in
megabytes (default) or in gigabytes by using the g|G parameter or terabytes by using the t|T
parameter. To specify the size in gigabytes, enter g or G, for terabytes, enter t or T, directly after
the specified size (no space). A size of 0 disables the auto-grow feature. The following table
displays the default and minimum growth increments per number of nodes:
MinimumDefaultNumber of Nodes
8G32G1-2
16G64G3-4
24G96G5-6
32G128G7-8
–sdgl <size>[g|G|t|T]
Limits the auto-grow from exceeding this storage amount. A size of 0 means no limit is enforced.
Size can be specified in megabytes (default) or in gigabytes by using the g|G parameter or
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