Abstract: Apparatus, systems, and methods may operate to grant a renewable lease synchronization lock to a node for a file having copies distributed among a group of nodes that is unsynchronized and for which no write lock has already been granted. The synchronization lock disables modification of the file, and enables synchronization of a file copy on the requesting node to a synchronization master copy on another node in the group. A renewable lease write lock can be granted to a node in the group when the file is synchronized and when the write lock has not already been granted. The write lock disables granting the synchronization lock, and enables file modification. The synchronization lock and write lock are maintained until their respective leases expire. Additional apparatus, systems, and methods are disclosed.

Abstract: The apparatuses and methods described herein may generate an identifier associated with a user identity responsive to detecting access to a network by a node associated with the user identity. The node may be assigned a temporary network address. The identifier associated with the user identity may be sent to the node. At least one permanent network address may be allocated to the node as a replacement for the temporary network address responsive to receiving an allocation request including the identifier from the node. The at least one permanent network address may be selected from one or more permanent network addresses previously assigned to the user identity.

Abstract: Apparatus, systems, and methods may operate to grant a renewable lease synchronization lock to a node for a file having copies distributed among a group of nodes that is unsynchronized and for which no write lock has already been granted. The synchronization lock disables modification of the file, and enables synchronization of a file copy on the requesting node to a synchronization master copy on another node in the group. A renewable lease write lock can be granted to a node in the group when the file is synchronized and when the write lock has not already been granted. The write lock disables granting the synchronization lock, and enables file modification. The synchronization lock and write lock are maintained until their respective leases expire. Additional apparatus, systems, and methods are disclosed.

Abstract: Apparatus, systems, and methods assign a permanent network address to a user identity, detect access to a network by a node associated with the user identity, generate an identifier associated with the user identity, and send the identifier to the node to enable the node to obtain replacement of a temporary network address allocated to the node, with the permanent network address. Activities may include receiving a release request from a node to release a temporary network address allocated to the node (associated with the user identity), receiving an allocation request (including the identifier) from the node to allocate a permanent network address previously assigned to the user identity, and allocating the permanent network address to the node as a replacement for the temporary network address. Additional apparatus, systems, and methods are disclosed.