CLI Guide

drawerLossProtect parameter are not set to the same value, the storage array returns an error

message and a storage array configuration will not be created.

To determine if a free capacity area exists, run the show diskGroup command.

The default physical disk is SAS.

The physicalDiskType parameter is not required if only one type of physical disks is in the storage

array. If you use the physicalDiskType parameter, you also must use the hotSpareCount parameter

and the

virtualDiskGroupWidth parameter.

Usage Guidelines

The following list provides guidelines for writing script commands on the command line:

• You must end all commands with a semicolon (;).

• You can enter more than one command on a line, but you must separate each command with a

semicolon (;).

• You must separate each base command and its associated primary and secondary parameters with a

space.

• The script engine is case sensitive.

• You can add comments to your scripts to make it easier for you and future users to understand the

purpose of the script commands. For information on how to add comments, see Adding Comments

To A Script File.

NOTE: User labels (such as for virtual disk, hosts, or host ports) are case sensitive. If you map to an

object identified by a user label, you must enter the user label exactly as it is defined, or the CLI and

script commands fails.

NOTE: You can use any combination of alphanumeric characters, hyphens, and underscores for the

names. Command names can have a maximum of 30 characters. If you exceed the maximum

character limit, replace square brackets ([ ]) with angle brackets (< >) to overcome this limitation.

NOTE: The capacity parameter returns an error if you specify a value greater than or equal to 10

without a space separating the numeric value and its unit of measure. For example, 10 GB returns

an error, but

9 GB does not return an error.

Data Assurance (DA) Feature

The Data Assurance (DA) feature increases data integrity across the entire storage system. DA enables the

storage array to check for errors that might occur when data is moved between the hosts and the

physical disks. When this feature is enabled, the storage array appends error-checking codes (also known

as cyclic redundancy checks or CRCs) to each block of data in the virtual disk. After a data block is

moved, the storage array uses these CRC codes to determine if any errors occurred during transmission.

Potentially corrupted data is neither written to disk nor returned to the host. If you want to use the DA

feature, start with a virtual disk group or disk pool that includes only physical disks that support DA. Then,

create DA-capable virtual diskss. Finally, map these DA-capable virtual diskss to the host using an I/O

interface that is capable of DA. I/O interfaces that are capable of DA include Fibre Channel, SAS, and iSER

InfiniBand (iSCSI Extensions for RDMA/IB). DA is not supported by iSCSI over TCP/IP, or by the SRP

InfiniBand.