IBM System Storage DS3000 Programming Manual page 422

degradedPriority=(highest|high|medium|low|lowest) |
securityType=(none|capable|enabled) |
diskDriveMediaType=(hdd | ssd | allMedia | unknown) |
T10PI=(none|enabled)]
Example of Creating logical drives with Software-Assigned disk drive
c:\...\smX\client>smcli 123.45.67.88 123.45.67.89
-c "create diskpool diskDriveType=sas
userLabel="Engineering_1"
diskDriveCount=64 warningthreshold=65 criticalthreshold=75
criticalpriority=high backgroundpriority=medium
degradedpriority=high securitytype=enabled
diskDrivemediatype=hdd T10PI=enabled;"
This command creates a disk pool with these features:
v Type of disk drive is SAS
v The name of the disk pool is Engineering_1. The disk pool name can be any combination of
alphanumeric characters, hyphens, and underscores. The maximum length of the disk pool name is 30
characters. You must enclose the disk pool name with double quotation marks (" ").
v The storage management software will add 64 disk drives to the disk pool. This assumes that the
storage subsystem has a minimum of 64 disk drives that have the same characteristics.
v When the disk pool consumes 65 percent of its capacity, a warning alert will be posted. The default
value is 50 percent. The warningthreshold parameter must always be set to a value lower than the
criticalthreshold parameter.
v When the disk pool consumes 75 percent of its capacity, a critical alert will be posted. The default
value is 85 percent.
v The priority for reconstruction operations for critical events on the disk pool is set to high. If a
condition, such as a two failed disk drive occurs, the storage management software will make the
reconstruction of the data a high priority.
v The priority for background operations on this disk pool is set to medium, meaning that background
operations (such as reconstruction or formatting) equally share resources with other storage subsystem
operations.
v The priority for correcting the disk pool after it has entered a Degraded state is set to high. If a
condition, such as a failed disk drive occurs, the storage management software will make the correction
of the condition a high priority.
v The securitytype is enabled, so the storage management software will use only disk drives that are
configured to be Full-Disk Encryption (FDE).
v The type of disk drive to be used is a hard disk drive (hdd).
v The disk pool will use only disk drives with protected data capability.
Creating disk pools with user-assigned disk drives
In some situations you might be required to create a disk pool by assigning the disk drives to the disk
pool, instead of having the software assign the disk Drives. One situation might be when you want to
create a small disk pool to test possible configuration parameters. Another situation might be when you
do not have enough disk drives with the same characteristics to create a disk pool. If all of the usable
disk drives in the storage subsystem do not have the same capacity, you can still configure a disk pool by
manually selecting the disk drives. One constraint, however, is that each drive in the disk pool assumes
the same capacity as the smallest drive, even if the other disk drives have more capacity.
The command to manually assign disk drives has this form:
create diskPool diskDrives=(EnclosureID1,drawerID1,slotID1 ...
EnclosureIDN,drawerIDN,slotIDN
userLabel="diskPoolName"
[driveCount=driveCountValue |
warningThreshold=(warningThresholdValue|default) |
4-40
IBM System Storage DS3000, DS4000, and DS5000: Command Line Interface and Script Commands Programming Guide