data buffer size for Windows NetBackup client

[Kevin_Hollings]

Hi,

I've been trying to change the buffer size between a Windows Client and a Linux based Master/Media server whatever value i set it to the media server reports that is still using 65536 (64k)

Master/Media - Netbackup Version 7.0

Client - Windows 2003 R2

Registry entry on client

HKEY_LOCAL_MACHINE\SOFTWARE\VERITAS\NetBackup\CurrentVersion\Config\
REG_DWORD: Buffer_Size: <Decimal value in KB>

HKEY_LOCAL_MACHINE\SOFTWARE\VERITAS\NetBackup\CurrentVersion\Config\
REG_DWORD: Buffer_Size: 256

buffer size reported in bptm

09:57:39.960 [3568] <2> io_init: using 65536 data buffer size

Any suggestions??

Thanks in advance.

Kevin......

[rizwan84tx]

Hi Kevin,

For windows client the communication buffer size can be changed via Host Properties in the NetBackup Administration Console, expand Clients and open the Client Properties > Windows Client >ClientSettings. Enter the new value in the Communications buffer field. (Default is 32 Kilobyte).

In Linux Master/media client; Create the /usr/openv/netbackup/NET_BUFFER_SZ file.

As with the media server, the file should contain a single integer that specifies the communications buffer size. Generally, performance is better when the value in the Communication buffer on the client matches the value in the NET_BUFFER_SZ file on the media server.

[RiaanBadenhorst]

Hi Kevin,

The bptm log will only report on the settings on the media server, not the client. What you're seeing is the SIZE_DATA_BUFFER configured on the media server (the size of buffer to use when writing to tape). You should set the network buffer to use on the media server by adding the NET_BUFFER_SZ on the media server.