As shown in the example above, physical disk capacity is displayed in MBs. The data columns
are identified as follows:
• ID—The physical disk ID.
• CagePos—The position of the physical disk within the drive cage. The format varies depending
on the drive cage type.
• Type—The physical disk type. There are three types of physical disks: FC, NL), and SSD.
• State—The state of the physical disk. The following disk states can appear:
normal—The disk is normal.◦
◦ degraded—The disk is not operating normally.
◦ new—The disk is new and needs to be admitted with the admitpd command before it
can be used.
◦ failed—The disk has failed.
Use showpd -state to display detailed state information.
• Size—The disk’s capacity.
• Volume—The volume’s capacity.
• Spare—The disk’s space reserved for spare chunklets.
• Free—The disk’s free space.
• Unavail—Unavailable disk space.
• Failed—Space in failed chunklets.
Determining Physical Disk Capacity by Disk Type
You can display the capacity of all physical disks of a specific type. There are three types of
physical disks: FC, NL, and SSD.
To display the total capacity for all physical disks of a specific type in a system, issue the showpd
-space -devtype FC|NL|SSD command.
NOTE: The output of the showpd -space -devtype FC|NL|SSD command is displayed in
the same format as the showpd -space command output example in “Determining Total Physical
Disk Capacity” (page 106).
Determining the Capacity of a Specific Physical Disk
Physical disk capacity can be filtered by disk ID to display a specific disk’s capacity information.
NOTE: The output for the command listed below is displayed in the same format as the showpd
-space command output example in “Determining Total Physical Disk Capacity” (page 106).
To display the capacity information for a single physical disk, issue the showpd -space <PD_ID>
command, where <PD_ID> is the physical disk whose capacity information is shown.
Spare Chunklets
Some chunklets are identified as spares when the system is first set up at installation. Data from
other chunklets is moved or reconstructed onto these spare chunklets in response to a chunklet or
disk failure, or when a drive magazine needs to be serviced. This initial spare storage totals the
amount of storage in a single drive magazine, using the largest size physical disks.
Spare Chunklets 107
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