The Transfer Service lets you move content, such as VM templates, scripts, and ISO images across sites and vCenter Server instances. The Transfer Service has a set of configurable properties that you can change to meet the needs of your virtual environment.

Property Default Value Description
Forced Flush to Output Interval 45 Interval between forced flushes to output stream, measured in seconds.
Http Client Buffer Size 262144 Buffer size of the HTTP client input stream during transfers, measured in bytes.
Http Client Socket Timeout 180 Socket timeout of the HTTP client, measured in seconds.
Http Request-handling Timeout 120 Request handling timeout for HTTP transfers, after which service unavailable status is returned to client, measured in seconds.
Http Socket Buffer Size 2048 Buffer size of the HTTP client socket, measured in bytes.
Intermediary I/O Stream Buffer Size 131072 Maximum size of buffer sitting between input and output streams during a transfer, measured in bytes.
Maximum Bandwidth Consumption 0 Bandwidth usage threshold across all transfers, measured in megabits per second Mbps. 0 means unlimited bandwidth.
Maximum Number of Concurrent Priority Transfers 5 Concurrent transfer limit for priority files. If exceeded, transfers are queued. This threadpool is used only to transfer priority objects.
Maximum Number of Concurrent Transfers 20 Concurrent transfer limit. If exceeded, transfers are queued.
NFC Connection Socket Timeout 120 Socket timeout for an NFC connection, measured in seconds. An NFC connection is opened only when interacting with a datastore.
NFC Eager-zeroed Thick Disk Write Timeout 5400 Eager-zeroed thick disk write timeout for an NFC connection, measured in seconds. This timeout must be larger than the socket timeout of NFC connection. An NFC connection is opened only when interacting with datastore.