Use this page to select the volume properties for the specified
volumes.
Fields
If
you selected 3380 Mod 2, 3380 Mod 3, 3390 Standard Mod 3, or 3390 Standard
Mod 9 Volume type and a single specified LCU, the following fields are displayed:
- Quantity
- Indicates the base volume quantity. You cannot enter a value great than
the quantity of available [Volume type] volumes. The maximum volume quantity
is calculated as a function of the volume type, the available storage given
the particular RAID types in the selected extent pool and the volume size,
or it can be limited by the number of available addresses in the LCU.
- Base start address
- A valid value, from 0 to 255.
- Ascending/ Descending
- Ascending or Descending.
- Available storage
- Available storage in the extent pool in cylinders and gigabytes.
- Available extents in extent pool in number of extents.
- Available addresses in the LCU, using 00-FF and 0-256.
- Quantity of available volumes (3380 Mod 2, 3380 Mod 3, 3390 Standard Mod
3, or 3390 Standard Mod 9).
If you selected 3390 Custom Volume type and a single
specified LCU, the following fields are displayed:
- Quantity
- The quantity of volumes to create. If you enter the volume size in the Size
(Cylinders) field and then select the Calculate max
quantity button, the Quantity field is
populated with the calculated value. You can overwrite this value and enter
a lesser quantity up to the maximum. The maximum volume quantity is calculated
as a function of the volume size and the available storage for the particular
RAID type in the selected extent pool.
- Calculate max size
- Enabled when you enter a value in the Volume quantity field.
When you select this button, a calculation is made that is based on the volume
quantity and the available storage given the particular RAID types in the
selected extent pool. This value is entered in the Size (Cylinders) field
and as the Largest custom 3390 volume in the Available storage field.
- Size (Cylinders)
- The size of the volumes to create. If you enter the volume quantity in
the Quantity field and select the Calculate
max size button, the Size (Cylinders) field
is populated with this calculated value. You can overwrite this value with
a new value up to the maximum size. The maximum volume size is calculated
as a function of the available storage given the volume quantity and the particular
RAID types in the selected extent pool.
- Calculate max quantity button
- Enabled after you enter a volume size. When you select this button, a
calculation is made based on the volume size and the available storage given
the particular RAID types in the selected extent pool. This value is displayed
in the Quantity field.
- Base start address
- A valid value from 0 to 255. Any value defined for this in the "Define
address allocation policy" page is displayed here as the default base start
address.
- Ascending/ Descending
- The value defined for this in the "Define address allocation policy" page.
- Available storage
- Available storage in the extent pool in cylinders and gigabytes.
- Available extents in extent pool in number of extents.
- Available addresses in the LCU, using 00-FF and 0-256.
- The largest Custom 3390 volume in number of cylinders.
Regardless of Volume type selection, if you selected
more than one LCU from the LCU Selection Box or the "Work with all available"
from the LCU Selection Box, the following fields are displayed:
- Addressing policy
- Spread volumes equally across LCUs (for example, 1000 volumes/10 LCUs
= 100/LCU)
- When this option is selected, the quantity of base volumes created in
the specified number of LCUs is spread equally across the LCUs. For example,
if you create 1000 base volumes in 10 LCUs, there would be an equal distribution
of the volumes in all 10 LCUs, so each of the 10 LCUs would have 100 base
volumes.
Note: If you entered this page already having selected specific LCUs,
the quantity of LCUs is limited to the quantity previously chosen.
- Utilize all addresses in each LCU (e.g., 1000 volumes/256 addresses =
4 LCUs)
- When this option is selected, the quantity of base volumes created utilizes
all of the addresses in the specified number of LCUs. For example, if you
create 1000 base volumes, a minimum of 4 LCUs would be required to contain
all the volumes. When you select this option, the minimum quantity of LCUs
required is populated in the Quantity of LCUs field.
Note: If you entered this page already having selected specific LCUs, the
quantity of volumes is limited to the quantity of LCUs previously chosen.
For example, if you chose 5 LCUs, then the quantity of volumes needs to be
in the range of 1025-1280 (because each LCU has up to 256 addresses available
for use).
- Spread volumes across LCUs up to a maximum address
- The maximum addresses value indicates the highest address value (up to
256) for volumes in these LCUs. For example, you specify 1000 volumes spread
across 7 LCUs, and three of them already have 100 volumes each taking up addresses
and the other four have no addresses used. If you specify up to a maximum
address of 200, the first three LCUs with 100 addresses used each get 100
more volumes, with each taking up to 200 addresses (for a total of 300 volumes).
The next 3 LCUs each get 200 volumes (subtotal = 600, total = 900). The last
LCU gets 100 volumes (for a total of 7 LCUs and 1000 volumes).
Note: If you
entered this page already having selected specific LCUs, the quantity of LCUs
is limited to the quantity previously chosen. If you selected LCUs that already
had addresses allocated, these are the first LCUs used when laying out the
new volumes up to the maximum address indicated in the field.
- Quantity of base volumes
- The quantity of volumes to create.
- Size (Cylinders)
- Enabled when you select the Custom 3390 for the volume type. Enter a value
in this field to indicate volume size for the custom volumes. If you select
the Calculate max size button, the Size field
is populated with this calculated value. You can overwrite this value with
a new value up to the maximum size. The maximum volume size is calculated
as a function of the volume quantity and the available storage for the given
RAID types in the selected extent pool.
- Calculate max size button
- Enabled when you select Custom 3390 for the volume type. After you first
enter the quantity of volumes, you can select the Calculate max
size button and the largest size 3390 volume for the specified
quantity is displayed in the Size (Cylinders) field
and for the Largest custom 3390 volume in the Available storage field.
The Max volume size is calculated as a function of the volume size and the
available storage for the particular RAID type in the selected extent pool.
- Quantity of LCUs
- The minimum value required in this field is a function of
- The quantity of volumes defined,
- Whether you came into this page already having selected specific LCUs,
whereupon the quantity of LCUs in the field is limited to the quantity chosen
from the pages, and
- The selected Addressing policy.
- Base start address
- A valid value from 0 to 366. Any value defined for this in the "Define
address allocation policy" page is displayed here as the default.
- Ascending/ Descending
- Any value defined for this in the "Define address allocation policy" page
is displayed here as the default.
- Available storage
- The available storage in the extent pools by cylinder and number of gigabytes
(GB).
- The number of available extents in an extent pool.
- The quantity of available volumes (3380 Mod 2, 3380 Mod 3, 3390 Standard
Mod 3, or 3390 Standard Mod 9).
Note: This field is grayed out if you selected
the Custom 3390 volume type.
- The largest 3390 Custom volume in number of cylinders.
Note: This field
is grayed out if you selected the 3380 Mod 2, 3380 Mod 3, 3390 Standard Mod
3, or 3390 Standard Mod 9 Volume type.