Settings › Manage File Copy Settings › Specify the File Copy Destination › Configure File Copy Chunk Value

Configure File Copy Chunk Value

To improve the performance (upload speed and server load), File Copy can upload data to the specified destination in parallel chunks. CA ARCserve D2D On Demand lets you set the number of 1MB chunks that will be simultaneously sent to the destination. By increasing the number of parallel chunks, you will decrease the time to complete the job, but will also have an adverse affect on server performance. You should configure this value as necessary to obtain optimal performance.

For example, if you are performing File Copy for a 10MB file and set the number of 1MB chunks to 2, then File Copy will write 10 chunks, two at a time. If you see that this is taking too long to complete the job, you can change this value to 4. The time to complete the job will then decrease because File Copy will now be writing 10 chunks, four at a time, but the load on your server will increase.

To configure the number of chunks, you need to set the corresponding DWORD value as follows:

1. Start edit registry.
2. Locate key:

   "HKEY_LOCAL_MACHINE\SOFTWARE\CA\CA ARCserve D2D\AfArchiveDll"

3. Manually create a DWORD value for "ArchMultChunkIO"
4. Assign a DWORD value:

   The available range for number of chunks is 1 - 4 chunks (default value is 4 chunks).