Ilo and Ilo2 virtual media throughput

[JKytsi]

Hi,

What are normal values for Virtual media transfer(in MB/s) using Ilo1 and Ilo2 ?

[David Claypool]

It depends on your network, the number of hops and even depends on the speed of the system the Java applet is running on (and the version of the JRE). It also depends on whether the target system is in pre-boot or the OS is booted (has a lot to do with USB efficiencies in both states). Also, generally speaking, connecting an iLO over the network to an ISO image hosted on an FTP or HTTP server is more efficient than the Java virtual media applet.

Will a locally-connected 48x CD-ROM be faster than Virtual Media? Yes.

What are you exactly trying to accomplish? There may be best practices that apply.

[JKytsi]

Hi,

Thanks for the reply, the thing I was looking is the ABSOLUTE max speed virtual media can transfer data. In my test I have DIRECT connection from my laptop to Ilo board. What is the max throughput ???

[rick jones]

I guess we'll have to get netperf ported to the iLO :)

[JKytsi]

Yeah ...maybe You have to do that because tests show that 400 kb/s is kinda max speed.

[eag1e59]

I have noticed that the ILO2 virtual media performance is terrible, about 4-5 x slower than that of ILO1.

I have tried numerous different models and different firmware revisions. Even with the latest (1.29) the performance is awful.

As i have to build servers in remote datacenters that have no personnel available, i have always mounted a DVD iso locally and let the server boot from that via the ILO, but with ILO2 build time is up to 9hrs when for ILO1 servers in the same location it is about 2!

Please fix it !

[rick jones]

I'm not an iLO engineer so...

When confonted with matters of TCP performance. Some of the things to look for are:

*) window size - Tput <= Window/RTT
*) segment size - how big are the packets
*) packet losses - does anything have to be retransmitted

As I suspect there is no easy way in the field to get TCP stats out of an iLO, taking a tcpdump trace of a virtual media session - starting from _before_ the virtual media is connected I would think - would be in order.

[JKytsi]

Well... if someone could tell us is it even possible to get more troughput than ~ 3-4 Mb/s that has been seen in our tests. After THAT we can start network tracing...

[gcwn]

Are we talking about product limitation?
I have 64bit server that can be only installed via iso boot cd. It takes FOREVER.
What's the solution\workaround to speed this up?

[JKytsi]

USB DVD -drive or HP RDP