The New-DfsnRoot cmdlet creates a Distributed File System (DFS) namespace. Specify the root path
and the root target path for the new namespace. You must also specify a type: stand-alone namespace,
Windows 2000 Server mode (Domain v1) namespace, or Windows Server 2008 mode (Domain v2) namespace.
You can specify settings for the new namespace. You can use this cmdlet to enable or disable the
following settings:
Site costing.
In-site referrals.
Access-based enumeration.
Root scalability.
Target failback.
You can also add a descriptive comment, select the state of the DFS namespace and DFS root target,
and set the Time to Live (TTL) interval for referrals.
To manage the DFS namespace, you can grant permissions to users or user groups. Users who have these
permissions can add, remove, and modify namespace folders and folder targets for the DFS namespace.
This command creates a DFS namespace that has a root at the path \\Contoso\AccountingResources.
The root target for the path is the shared folder \\Contoso-FS\AccountingResources. The namespace
type is Windows Server 2008 mode, specified as a type of DomainV2.
This command creates a stand-alone DFS namespace that has a root at path \\Contoso\Software that
has a namespace root target pointing to \\Contoso-FS\Software. This namespace uses cost-based site
selection.
Parameters
-AsJob
Runs the cmdlet as a background job. Use this parameter to run commands that take a long time to
complete.
The cmdlet immediately returns an object that represents the job and then displays the command
prompt. You can continue to work in the session while the job completes. To manage the job, use the
*-Job cmdlets. To get the job results, use the
Receive-Job cmdlet.
For more information about Windows PowerShell background jobs, see
about_Jobs.
Runs the cmdlet in a remote session or on a remote computer. Enter a computer name or a session
object, such as the output of a New-CimSession
or Get-CimSession cmdlet. The default is the
current session on the local computer.
Indicates whether a DFS namespace uses access-based enumeration. If this value is $true, a DFS
namespace server shows a user only the files and folders that the user can access.
Indicates whether a DFS namespace server provides a client only with referrals that are in the same
site as the client. If this value is $true, the DFS namespace server provides only in-site
referrals. If this value is $false, the DFS namespace server provides in-site referrals first,
then other referrals.
Indicates whether a DFS namespace uses root scalability mode. If this value is $true, DFS
namespace servers connect to the nearest domain controllers for periodic namespace updates. If this
value is $false, the servers connect to the primary domain controller (PDC) emulator.
Indicates whether a DFS namespace uses cost-based selection. If a client cannot access a folder
target in-site, a DFS namespace server selects the least resource intensive alternative. If you
provide a value of $true for this parameter, DFS namespace favors high-speed links over wide area
network (WAN) links.
Indicates whether a DFS namespace uses target failback. If a client attempts to access a target on a
server and that server is not available, the client fails over to another referral. If this value is
$true, once the first server becomes available again, the client fails back to the first server. If
this value is $false, the DFS namespace server does not require the client to fail back to the
preferred server.
Specifies an array of accounts. This cmdlet grants management permissions for the DFS namespace to
the users and user groups specified. Users can add, remove, and modify namespace folders and folder
targets.
Specifies the target priority class for a DFS namespace root. Target priority offers you the ability
to classify and rank in-site targets. You can specify targets to receive the highest or lowest
preference, and you can divide the remaining targets based on their site cost for a DFS client to
connect to them. The acceptable values for this parameter are:
GlobalHigh - The highest priority class for a DFS target. Targets assigned this class receive
global preference.
SiteCostHigh - The highest site cost priority class for a DFS target. Targets assigned this
class receive the most preference among targets of the same site cost for a given DFS client.
SiteCostNormal - The middle or normal site cost priority class for a DFS target.
SiteCostLow - The lowest site cost priority class for a DFS target. Targets assigned this class
receive the least preference among targets of the same site cost for a given DFS client.
GlobalLow - The lowest level of priority class for a DFS target. Targets assigned this class
receive the least preference globally.
Specifies the priority rank, as an integer, for a root target of the DFS namespace. Lower values
have greater preference. A value of zero (0) is the greatest preference.
Specifies the state of the DFS namespace root. The acceptable values for this parameter are:
Online
Offline
Clients do not receive referrals for a DFS namespace folder that is offline. If you set a namespace
root to a value of Offline, the entire namespace becomes inaccessible.
Specifies the maximum number of concurrent operations that can be established to run the cmdlet. If
this parameter is omitted or a value of 0 is entered, then Windows PowerShell® calculates an
optimum throttle limit for the cmdlet based on the number of CIM cmdlets that are running on the
computer. The throttle limit applies only to the current cmdlet, not to the session or to the
computer.
Specifies a TTL interval, in seconds, for referrals. Clients store referrals to root targets for
this length of time. The default TTL interval for root referrals is 300 seconds.
This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable,
-InformationAction, -InformationVariable, -OutBuffer, -OutVariable, -PipelineVariable,
-ProgressAction, -Verbose, -WarningAction, and -WarningVariable. For more information, see
about_CommonParameters.