Forum Discussion
Hi Volker
Those buffers are WAY to small to be of any use to you.. both of those really should be set much larger, something like 262144 then you will should get much better performance....
cmd: no -o -p tcp_sendspace=262144 (i think its -p to make it permanant but unsure.. you can do without and it will revert back after reboot if issues occur)
As for testing the tape without NBU interferance i dont know of any way from the client to do that there might be an AIX utility somewhere that could help out with that.. If you writing from the client direct to the tape drive youy might have your SAN team check the san and see if your traffic is routing over any uplinks or slower switches.. that could easily bottlneck your traffic especially if you have other things going over something smaller like a 2GB uplink.. the LTO5 drives all use 4GB and if you have multiple then you choke up.
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