Creating arrays
Complete this task to create arrays, either automatic or custom, and to
specify their RAID and rank attributes.
Perform the following steps to create arrays:
- In the navigation, select . On the Arrays main page, in the
Select storage image drop-down list,
select a storage image.
- From the Select Action
list, select Create.... The Create Array –
Definition method page is displayed.
- In Create Array – Definition method, choose to either
create your arrays automatically, where the DS Storage Manager
specifies the array sites, or to create custom arrays where you specify the
array sites. Click Next.
- If you chose to create your arrays automatically, in Create Array – Array
configuration (Auto), specify the quantity and RAID type of the arrays that you
are creating. Click Next after you have made your
selections. The Create Array – Add arrays to ranks page is displayed.
- If you chose to create custom arrays, in Create Array – Array configuration
(Custom), specify the RAID type for the arrays that you are creating and select
the array site numbers that you want to assign to the arrays. Click Next after you have made your selections. The Create
Array – Add arrays to ranks page is displayed.
- In Create Array – Add arrays to ranks, you can
optionally choose to add the arrays that you are creating to ranks. If you
choose to add your arrays to ranks, you must specify the storage type, FB or
CKD, for the ranks that you are creating. Click Next. The Create Array – Verification page is
displayed.
- In Create Array – Verification, review the attributes
and values to verify that they are correct. If the attributes and values are not
correct, click Back as appropriate to return and
then specify the correct values. Otherwise, click Finish to complete the array creation process.
Creating ranks
Complete this task to create ranks and to specify their arrays and extent
pools.
Perform the following steps to create ranks:
- In the navigation, select . On the Ranks main page, in the Select storage image drop-down list, select a
storage image.
- From the Select Action
list, select Create.... The Create Rank – Select
array for rank page is displayed.
- In the Select column,
select an array. Then click Next. The Create
Rank – Define rank properties page is displayed.
Note: If there are no available
arrays for selection, you can create one by clicking the Create new array button. When you have finished creating
an array, you are returned to this page, and the array that you created is
available for selection.
- Specify the Storage type
and then click Next. The Create Rank –
Select extent pool page is displayed.
- Optionally, you can select one extent pool. In the
Select column, select an extent pool. The click
Next. The Create Rank – Verification page is
displayed.
Note: If there are no available
extent pools for selection, you can create one by clicking the Create new extent pool button. When you have finished
creating an extent pool, you are returned to this page, and the extent pool that
you created is available for selection.
- In Create Rank – Verification, review the attributes
and values to verify that they are correct. If the attributes and values are not
correct, click Back as appropriate to return and
then specify the correct values. Otherwise, click Finish to complete the rank creation process.
Creating extent pools (automatic mode)
Complete this task to create an extent pool using the automatic configuration
mode that allows you to rely on automatic system calculations for much of the
configuration.
The automatic configuration mode allows the system to calculate and assign
values after you have supplied key data. The results of combining your input and
the system calculation are displayed within a bar graph on the Create New Extent
Pools page. You can use the bar graph to determine if the extent pool
configuration meets your needs.
Perform the following steps to create extent pools:
- In the navigation, select . On the Extent pools main page,
select Create new extent pools . . . from the table
drop-down list.
The Create New Extent Pools page is displayed with Automatic shown as the Type of Configuration. Do not
change this setting.
- Supply the following information in the Define
Storage Characteristics section of the page:
- RAID
- Select one of the following RAID types:
RAID type is used by the ranks in the extent pool. RAID is
a methodology for grouping disk drives to protect against data loss from a
failing disk drive.
- Type of Configuration
- Leave the selection set to Automatic.
- DA Pair Usage
- Select one of the following from the pull-down list:
- Spread among all pairs
- Spread among least used pairs
- Sequentially fill all pairs
The bar graph displays in real-time
the results of your choice. This information is used to analyze the best
configuration selection for your system.
- Drive Class
- Select one of the disk drive modules in the pull-down list. If one of the
selections within this field is 146 GB 15K Enterprise Drive with xxxx GB
available, this example represents the following designation:
- The disk drive module is a high-speed fibre channel disk drive.
- The disk drive module has a size of 146 GB and a speed of 15 000 rpm.
- When you make your selection, an information box is displayed
that lists the available capacity as ranks and the capacity size that is needed
to create the extent pool.
- Select Capacity to Configure
- Select the appropriate rank designation for the capacity that you want to
configure. The bar graph displays the results of the choice that you have
selected.
Note: As soon as you supply these
values, the results of your selections are immediately reflected in the bar
graph and the Select Capacity to Configure list is updated.
- Make one of the following selections for Number of
Extent Pools within the Define Extent Pool Characteristics section of the
page:
- Two extent pools (one per server)
- Causes the system to assign the capacity to two extent pools, which makes a
pair.
- Extent pool for each rank (physical isolation)
- Causes the system to assign one array to each extent pool and evenly assign
the extent pools to each server if the Automatic option is in effect under
Server Assignment.
- Single extent pool
- Causes the system to assign the capacity to a single extent pool.
- Enter an extent pool name prefix consisting of 1 to
12 characters as a value for the Pool Name Prefix field. The system
automatically adds the next available numeric suffix to the prefix starting with
"_0"
The prefix allows you to supply a unique identifier for the extent pool.
- Either leave the default values for Storage Reserved
and Storage Threshold or enter new values 0 - 100. These percentage values are
indicators that the system uses to issue an alert when the value is exceeded.
Notes:
- The storage reserved value represents the percentage of extents in the
extent pool that are reserved and cannot be allocated for use.
- The storage threshold value represents a percentage of allocated extents out
of the total nonreserved storage extents. The system generates an alert when the
threshold is reached. It allows you time to make adjustments before a storage
full condition occurs.
- Select the server assignment from the Server
Assignment drop-down list.
You can leave the selection on Automatic and the system assigns the
extent pool to the server (0 or 1). That is the most efficient way to maintain
server balance. However, you can control the server assignment by selecting
server 0 or server 1.
Note: The server assignment remains
Automatic and cannot be changed if the Two Extent Pools (1 per server) option is
selected under Number of Extent Pools.
As soon as you make your server choice, the server information area is
updated. This information can help you balance the storage server workload.
- Click Ok if you are
ready to create the extent pools you have selected. You are returned to the
updated Create Extent Pool Verification table. Click Add
Another if you are creating more extent pools and the Create Extent Pool
Verification table is updated while the form remains available to create another
extent pool.
- Review the changes to the Create Extent Pool
Verification table. If you are satisfied with the changes, click Create All to accept the changes or click Cancel to cancel out of all of the changes.
While still at the Create Extent Pool Verification table, the
following actions are available from the table drop-down list:
- Add Pools
- You can create additional new extent pools from the Create New Extent Pools
page.
- Add Capacity to Pool
- You can add capacity to a pool that is selected in the Create Extent Pool
Verification table.
- Delete Pools
- You can delete one or more pools that are selected in the Create Extent Pool
Verification table.
Creating extent pools (manual mode)
Complete this task to create an extent pool using the manual configuration
mode.
The manual configuration mode allows you to create an extent pool and have
control over the array site, array, rank assignment, and the server assignment
for the extent pool.
When you select Manual for the Configuration
Type option on the Create New Extent Pool page, the page does not change. Only
the Select Available Capacity section of the page changes by displaying an
Available components table that includes: array sites, arrays, and rank
assignments. When you select a component that you want to use to create your
extent pool, the bar graph updates in real-time. You can use the bar graph to
determine if the extent pool configuration meets your requirements.
Perform the following steps to create extent pools:
- In the navigation, select . On the Extent Pools - main page,
select Create new extent pools . . . from the table
drop-down list.
The Create New Extent Pools page is displayed with Automatic as the Type of Configuration.
- Select the applicable storage type and RAID type from
the drop-down lists in the Define Storage Characteristics section of the page.
Use the RAID pull-down list to change the value to one of the following:
RAID type is used by the ranks in the extent pool. RAID is
a methodology for grouping disk drives to protect against data loss from a
failing disk drive. An extent pool can contain ranks of different RAID types. An
extent pool of this type is listed with a RAID type of mixed on the Extent Pools
- Main page.
- Select Manual from the
Type of Configuration drop-down list. The Select Available Capacity
section of the Create New Extent Pools page changes format and displays a table
of available arrays, array sites, and ranks that can be used to create the
extent pool.
- Select one or more of the available components from
the table. The results of your selection are immediately reflected in the bar
graph. If there are no available components in the table, try changing
the RAID Type and or the Storage Type.
- Make one of the following selections for Number of
Extent Pools within the Define Extent Pool Characteristics section of the
page:
- Two extent pools (one per server)
- Causes the system to assign the capacity to two extent pools, which makes a
pair.
- Extent pool for each rank (physical isolation)
- Causes the system to assign one array to each extent pool and evenly assign
the extent pools to each server.
- Single extent pool
- Causes the system to assign the capacity to a single extent pool.
- Enter an extent pool name prefix that consists of 1 -
12 characters as a value for the Pool Name Prefix field. The system
automatically adds the next available numeric suffix to the prefix starting with
"_0"
The prefix allows you to supply a unique identifier for the extent pool.
- Either leave the default values for Storage Reserved
and Storage Threshold or enter new values 0 - 100. These percentage values are
indicators that the system uses to issue an alert when the value is exceeded.
Notes:
- The storage reserved value represents the percentage of extents in the
extent pool that are reserved and cannot be allocated for use.
- The storage threshold value represents a percentage of allocated extents out
of the total non-reserved storage extents. The system generates an alert when
the threshold is reached. It allows you time to make adjustments before a
storage full condition occurs.
- Select the server assignment from the Server
Assignment drop-down list.
You can leave the selection on Automatic and the system assigns the
extent pool to the server (0 or 1) that it determines is the most efficient to
maintain server balance. However, you can control the server assignment by
selecting server 0 or server 1.
Note: The server assignment remains
Automatic and cannot be changed if the Two Extent Pools (1 per server) option is
selected under Number of Extent Pools.
As soon as you make your server choice, the server information area is
updated. This information can help you balance the storage server workload.
- Click Ok if you are
ready to create the extent pools you have selected. You are returned to the
updated Create Extent Pool Verification table. Click Add
Another if you are creating another extent pool and the Create Extent
Pool Verification table is updated while the form remains available to create
another extent pool.
- Review the changes to the Create Extent Pool
Verification table. If you are satisfied with the changes, click Create All to accept the changes or click Cancel to cancel out of all of the changes.
While still at the Create Extent Pool Verification table, the
following actions are available from the table drop-down list:
- Add Pools
- You can create additional new extent pools from the Create New Extent Pools
page.
- Add Capacity to Pool
- You can add capacity to a pool that is selected in the Create Extent Pool
Verification table.
- Delete Pools
- You can delete one or more pools that are selected in the Create Extent Pool
Verification table.
Creating open systems volumes
Complete this task to create open systems volumes and to specify their
attributes and properties.
Note: Before you configure, disable
any firewalls, as they might interfere with DS8000™
communication.
To create open systems volume groups, perform the following steps:
- In the navigation, select . On the Volumes – Open systems main page, in the
Select storage image list, select a
storage image.
- Select a volume. From the Select Action list, select Create.... The Create Volume – Select extent pool page is
displayed.
- You must select an extent pool for the target
volumes. After you select the extent pool, click Next. The Create Volume – Define volume
characteristics page is displayed.
Note: If there are no available
extent pools available for selection, you can create one by clicking the Create new extent pool button. When you have finished
creating an extent pool, you are returned to this page, and the extent pool that
you created is available for selection.
- In Create Volume – Define volume characteristics,
define the volume type for the new volumes. You can select any number of volume
groups from the Select volume groups list to
associate with the new volumes. After you define the volume characteristics,
click Next. The Create Volume – Define
volume properties page is displayed.
- Define the volume properties. To calculate the
maximum size, enter a value in the Quantity field
and click the Calculate max size button. To
calculate the maximum quantity, enter a value in the Size field and click the Calculate
max quantity button. The Extent size
and Available Storage Capacity in Extent Pool
fields are displayed in the units that correspond to the selected volume type.
If you click the Calculate max size button, the
Size field is populated with the calculated value.
You can overwrite the value and enter an integer value for a lesser size. If you
selected one of the System i™ volume types on the previous Define
volume characteristics page and Decimal GB (109 bytes) for the
capacity units, the values here include 8.56, 17.54, 35.16, 36.00, 70.56,
141.12, and 282.25. If you selected one of the System i volume
types on the previous Define volume characteristics page and Binary GB
(230 bytes) for the capacity units, the values here include 8.00,
16.34, 32.75, 33.53, 65.72, 131.44, and 243.80.
If you select the Select LSSs for volumes
checkbox, you are required to select from the list of available LSSs for these
open systems volumes.
After you define the volume properties, click Next. The Create Volume – Create volume nicknames page is
displayed.
- In Create Volume – Create volume nicknames, you can
optionally create one or more nicknames that are based on entries in the Prefix or Suffix fields. If
you do not specify nicknames, only a volume number is created. Click Next. The Create Volume – Verification page is
displayed.
Tip: If you plan to create volume
groups, you can use a unique and meaningful nickname that can help you easily
find the volumes that you want to include in a volume group. For example, if you
are creating multiple volumes of data for a specific department, you can make
the nickname prefix an abbreviation of that department's name. Then you can use
a predetermined range of numbers in the nickname suffix to identify each
individual volume.
- In Create Volume – Verification, review the
attributes and values to verify that they are correct. If the attributes and
values are not correct, click Back as appropriate
to return and to specify the correct values. Otherwise, click Finish to complete the volume creation process.
Creating open systems volume groups
Complete this task to create open systems volume groups and to specify their
properties and parameters.
Volume groups provide a volume masking function. When you create a
volume, you can assign it to one or more volume groups. Open systems server
attachments (host connections) are assigned to volume groups to
control access to the volumes. There can be up to 8320 volume groups. Any host
port (or host port group) can access only one volume group. Normally, a
host connection is mapped to only one volume group; however, some hosts such as
Sun Solaris allow mapping to multiple volume groups. A volume group can
be accessed by multiple servers (host connections) if they have the
same block size and address. If there is a requirement for volume sharing, for
example in a clustering environment, then a volume can be a member of multiple
volume groups. In both cases, data integrity is the responsibility of host
software.
To create open systems volume groups, perform the following
steps:
- In the navigation, select . On the
Volume groups main page, in the Select storage
image drop-down list, select a storage image.
- From the Select Action list, select Create. The Create New Volume Group – Define volume group
properties page is displayed.
- Define the properties. In the Volume Group
Nickname field, you can either keep or modify the default nickname. In
Host Type, select the appropriate host type. Both
the Nickname and Host
Type fields are required. Select the volumes that you want to
include in the volume group. After you define the properties, click Next.
- Use the Create Volume Group – Verification page to review the
attributes and verify that they are correct. If the attributes and values are
not correct, click Back as appropriate to return
and to specify the correct values. Otherwise, click Finish to complete the volume group creation
process.
Applying a configuration (simulated only)
Complete this task to select, authenticate, and apply a storage
image configuration.
Ensure that you have obtained and applied an Operating Environment
License with a maximum storage amount that exceeds the amount of storage that
you have configured in your simulated configuration.
The source storage image must have defined a logical
configuration and hosts before you can apply a configuration.
To apply a configuration in simulated mode, perform the following
steps:
- In the navigation, select .
- From the Select Action
list, select Apply configuration.... The Apply
Configuration — Storage complex page is displayed.
- In the Storage Complex page, choose to either select
from a list of real-time storage complexes or specify the management console IP
addresses. Click Next to continue.
- If you choose Select from a list, the
Select storage complex page of this wizard is displayed with the storage
complexes in your simulated environment.
- If you choose Specify management console IP
, specify the IP address and choose whether or not to specify sign on
information.
- Click Next to continue.
The Storage unit page is displayed.
- Select a storage unit to import from, and then click
Next. The Storage image page is displayed.
- Select a storage image to import, and then click
Next. The Verification page is displayed.
- Use the Verification page to review the attributes
and verify that they are correct.
- If the attributes and values are not correct, click
Back, as appropriate, to return and specify the
correct values. Otherwise, click Finish to complete
the apply configuration process.
Enabling host system I/O
Complete this task to perform the high-level steps that are required to
enable your host to send I/O to the DS8000™.
You must complete your logical storage configuration before you
attempt to send host I/O to the DS8000.
This task contains the high-level tasks that you must
complete before you can successfully send host I/O to your DS8000.
Instructions and details for each individual step can be found in the host
system documentation or the IBM® System Storage
DS8000 Host Systems Attachment Guide.
- Verify and update the supported fabric switch firmware.
- Create your storage area network (SAN) zones and assign them to the
appropriate zone sets.
- Verify and update the host adapter firmware on the host system.
- Install, verify, and update the host failover driver (SDD) on the host
system.
- If necessary, reconfigure or reboot the host system.
- Verify that the host system can access the DS8000 logical
volumes that are assigned to it.
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