View or Modify the Device Properties for Disk Libraries with Static Mount Paths
To
modify the device properties for disk libraries with static mount paths:
From the CommCell Browser, right-click a mount path for which you wish to view the
modify the properties, and then click Properties.
If necessary you can:
Change the Device Alias Name
Enable or disable the device by selecting or clearing the Device
Enabled option.
Click OK to save the changes.
View or Modify the Device Properties for Disk Libraries with Static Mount Paths
To
modify the device properties for disk libraries with static mount paths:
From the CommCell Browser, right-click a mount path for which you wish to view the
modify the properties, and then click Properties.
If necessary you can:
Change the Device Alias Name
Enable or disable the device by selecting or clearing the Device
Enabled option.
Click OK to save the changes.
View or Modify the Properties of Disk Devices in a Shared Mount Path
To
view or modify the properties of Disk Devices in a shared mount path:
From the CommCell Browser, right-click a mount path for which you wish to view the
MediaAgents, and then click Properties.
Click the
Device
Paths
tab of the Mount Path Properties dialog box.
You can change the
Maximum number of writers by clicking the Edit button.
You can enable or disable the MediaAgent's access to the device by
selecting or clearing the enabled button.
On mount paths associated with replicated disks, you can modify the
read-write access to the mount path. This should not be done for Disk
Libraries on Replicated Disks used for the
Disk Library Replication
solution.
Modify the Access Information for a Shared Disk
Modify the Access Path for all MediaAgents Sharing the Device (Supported for
Windows MediaAgents)
On mount paths associated with replicated disks, you can modify the
read-write access to the mount path. This should not be done for Disk
Libraries on Replicated Disks used for the
Disk Library Replication
solution.
Use the following steps to modify the access type for a Shared Disk
Device:
From the CommCell Console, click the Tools menu
and then click Control Panel.
From the Control Panel, double-click the Library
& Drive Configuration.
From the Select MediaAgents dialog box, perform the following:
From the Available MediaAgents list, select the MediaAgents
of same operating system type.
Click Add >> to move the MediaAgents to the Selected
MediaAgents list box.
Click OK.
Click OK.
From the Library and Drive Configuration window,
click the Shared Disk Device tab.
Locate the Device and then navigate to the individual folder.
Right-click the <Mount Path> and then click Properties.
If access type is selected as Read, then that mount path will be
used only for read operations.
If access type is selected as Read/Write, then that mount path is
used for both read and write operations.
Click OK to save the changes.
Deconfigure a Shared Disk Device
Before you Begin
Be certain that the mount paths using the device are deconfigured. See
Deleting a Mount Path for more
information.
Use the following steps to configure multiple MediaAgents for a Shared Disk
Device:
From the CommCell Console, click the Tools menu
and then click Control Panel.
From the Control Panel, double-click the Library
& Drive Configuration.
From the Select MediaAgents dialog box, perform the following:
From the Available MediaAgents list, select the MediaAgents
of same operating system type.
Click Add >> to move the MediaAgents to the Selected
MediaAgents list box.
Click OK.
Click OK.
From the Library and Drive Configuration window,
click the Shared Disk Device tab.
Expand the Device to which you want to configure multiple
MediaAgents.
Right-click the <Mount Path> and then click Configure for All
Selected MediaAgents.
For Windows, configure all MediaAgents when the mount path
is configured as UNC path and all selected MediaAgents have
access to this UNC path.
For Unix, ensure that the directory path to be mounted in
the unconfigured MediaAgents has the same directory path as that
of the configured MediaAgent.
Click Yes.
The device is configured with the list of selected MediaAgents.
To
establish the low watermark for a disk library:
From the CommCell Browser, right-click the disk library for which you
wish to establish the low watermark, and then click Properties.
In the Low Watermark box, type or select the minimum percentage of free space at which the low watermark warning should be
generated.
If the amount of free space, for all the combined mount paths, reaches or falls below the low watermark,
the MediaAgent displays a message in the Event Viewer and sends an Alert, if configured.
From the Tools menu in the CommCell Console, click Control Panel.
Double-click Media Management.
The Media Management Configuration dialog box appears.
On the Service Configuration tab, set the Number of days in
advance to trigger alert for low disk space for disk library option to a value
greater than 0.
This value is the number of days that you want to be notified before the library
runs
out of disk space. For example, if
you want to be notified five days before the library runs out of disk space, set the value to 5.
If the value is set to 0, then the alert is
generated when the low watermark is reached.
Click OK.
In the Control Panel, double-click Alerts.
The Alerts dialog box appears.
Click Add.
The Add Alerts Wizard appears.
Configure the alert according to your needs. As you configure the alert,
make sure that the following options are set:
On the General Information page, set Category =
Media Management and
Type =
Library Management.
On the
Threshold and Notification Criteria Selection page, select the Insufficient Storage
check box.
Once you configure the alert completely, click Finish.
To
create read-only archive files in a disk library on filers:
From the CommCell Browser, right-click the disk library for which you wish to
create read-only archive files, and
then click Properties.
From the
General
tab of Library Properties, click the Mark Archive Files as Read-Only option.
Click OK to save the changes.
NOTES
This option will only affect files that are
subsequently created by data protection and auxiliary copy operations to
this library. Permission to files that are already available in
this library will not be affected.
Enable Single Instancing of Data on a Disk Library
To
enable single instancing of data on a disk library:
From the CommCell Browser, right-click the disk library for which you
wish to establish the single instancing of data, and then click Properties.
Click the
Mount Paths tab. Note that mount paths enabled with hardware single instancing must be less than 100 characters long. Otherwise hardware single instancing might not be employed successfully.
Click the Disks within this library support hardware single
instancing
option.
Click either the
Maximum Allowed Writers option or the Allocate No. of Writers
option and then select the maximum number of writers.
Click OK to save the changes
Repeat steps 5, 6, 7 and 8 in all the mount paths associated with the
disk library. Keep in mind that the sum of the writers allocated in the
mount paths should be equal to the total mount paths allocated in the
disk library.
Right-click the storage policy copy for which you wish to enable or
disable Data Aging, and then click Properties.
From the
Retention
tab of the Copy Properties dialog box, select the Enable Managed Disk Space for
disk data
option and click OK.
From the
Mount Paths tab of the Library Properties dialog box, set the start and
stop data aging disk capacity thresholds in the Start aging when data
occupied on disk is n %
and the Stop aging when data occupied on disk is n % boxes, and click OK to save changes.
View a List of Storage Policies Accessing the
Disk Library
To
view the list of Storage Policy accessing the disk library:
From the CommCell Browser, right-click the disk library for which you wish to
view the storage policies, and
then click Properties.
Make sure that your disk library meets the appropriate criteria. For more
information, see
Migrate Magnetic Libraries.
To perform
a disk library migration from one MediaAgent to another MediaAgent:
Right-click the disk library that you want to migrate to another MediaAgent
and click Migrate Disk Library.
A message is displayed indicating that this operation migrates the disk
library to another MediaAgent. Click OK.
The
Select
MediaAgent dialog box is displayed. This dialog box displays the current
MediaAgent that the disk library is associated with and allows you to select
a MediaAgent to migrate to. From the drop-down list, select the MediaAgent you
want to migrate to and click OK.
The disk library will now be associated with the selected MediaAgent.
To view the disk library properties to verify successful migration, right
click on the disk library where you want to view the properties, and click
Properties.
The MediaAgent is displayed on the General tab.
Make sure that the mount path associated with the disk library, points
to valid path. (See
Add or Modify Mount
Paths for step-by-step instructions.)
Deconfigure a Disk Library
Data associated with a library
will be lost, when it is deconfigured.
Before you Begin
Be certain that the library that you want to remove is not in use. Use the Job
Controller to find and kill any jobs that use the library.
Make sure that every storage policy copy associated with the library has been deleted.
Determine the storage policies accessing the library as described in
View
the Storage Policies Accessing a Library.
Right-click the library that you want to deconfigure, and then click Deconfigure.
A prompt appears, reminding you that the library's storage policy copies must be deleted
in order for the library to be deconfigured. If no storage policy copies are associated
with the library and you want to deconfigure, click Yes.
The
disk library is removed from the
Library and Drive
Configuration window.
In the Space Allocation section, establish one or more of the following
options:
Specify the minimum reserve space in the Reserve Space box.
Specify the maximum space that can be used by the mount path by
choosing either the Use until free space on mount path reaches Reserved Space
or Do not consume more than n GB options.
Click OK to save the changes.
NOTES
In some situations the mount path may consume more space and exceed the
specified minimum reserve space. Consider the following example:
If you
have established the minimum reserve space as 2 GB, and run a 2 streamed
data protection operation when the disk space is 2.01 GB, both the streams
will use a minimum of 25 MB before spanning to an alternate mount path. In
such a situation the free space will fall below the specified 2 GB.
This could also happen if 2 concurrent single-streamed data protection
operation is initiated to the same mount path, using 2 different storage
policies.
Similarly, the system may consume more than the specified maximum space.
Consider the following example:
When a data protection job is
initiated, the system checks for the available disk space and verifies
whether it is less than the specified maximum space. For example if you have
specified 5 GB as the maximum space and if you have used 4.75 GB, the data
protection job will be initiated using the mount path. However, if the size
of the data is .5 GB, the system will write the entire data. In such a
situation the space consumed will be more than the specified maximum space.
Note that a data protection operation will generally write to the mount
path until the minimum reserve space is reached, before spanning to an
alternate path.
In the Fragmentation section, click and select the Minimize fragmentation by
allocating write blocks of n MB
option and specify the size that must be pre-allocated for each write
operation in the box.
From the CommCell Browser, right-click the mount path for which you wish to
delete the contents,
and then click Delete Contents.
Click Yes in the Warning prompt to continue.
Click No to abort the operation.
In the Enter Confirmation text dialog box, type
erase and reuse media and then click OK.
Click Cancel to abort the operation.
NOTES
This operation deletes the data from the CommServe database. Note that
this operation does not free-up the disk space in the mount path. A
Data Aging
operation must be run subsequently to free-up the disk space.
Prevent Accidentally Deleting Mount Path
Contents
This feature is not supported on some libraries and may need to be
turned off.
If necessary, create a new mount path for subsequent operations by following the procedure for
Add Mount Paths.
NOTES
When you Disable mount path for write operations, the mount path will not be used for subsequent write operations. You can however perform read operations on the data available in the
mount path.
Depending on the retention criteria set for the storage policy copy that
was used to write the data, the data in the mount path will be pruned when data aging operation is
performed.
If you wish to delete the mount path, use Valid Data in the
Mount Path Properties (General)
tab to determine whether the mount path has valid data.
Delete a Mount Path
A mount path can only be deleted if it does
not contain backup data and is not the last remaining mount path. You
can remove backup data either by deleting all storage policy copies
that point to the disk library, or by taking the mount path
offline, allowing its data to age and then running the
Data Aging
operation. Before you can delete a storage policy copy, all subclients
associated with the copy must either be associated with a different
storage policy copy or deleted.
To
delete a mount path:
Delete the contents of the mount path as described in
Delete the Contents of a Mount Path. Note
that once data is deleted on disk mount paths, it will not be
restorable.
To
modify the device properties for disk libraries with static mount paths: