I was working on a similiar setup last week.
Compaq DL 580's with Gig Ethernet card. The card was behaving strangely,
would actually choke and cease network activity in the middle of a
backup. Turned out the GE driver had to an Intel driver, if you are
using non Compaq network switches.
HTH
Prasad.
Anderson, David wrote:
> First off, I'll apologize for being long winded, but this is too good NOT to
> share.
>
> Our environment:
> All brand new hardware
> - two Compaq ProLiant ML530's, dual CPU, 1.1 G memory
> - Windows 2000
> - Master Server also acting as a Media Server
> - StorageTek L180 (4 Drives, also tried a Compaq MSL5026 (2 drives) all SDLT
> - Compaq 8EL Fibre Switch, Compaq Modular Data Router (SCSI bridge)
> - We had started with NBU 3.4.1 and in desperation, installed 4.5 (the one
> with SCSI Reserve/Release).
> (by the way, if you're a Windows shop, do the 4.5, and to heck with Motif!)
>
> We have been having a lot of problems with drives randomly dropping off
> line. The libraries all saw a "SCSI Bus Rewind" request, so dropped
> whatever it was doing and waited for the actual command to rewind (which
> would never come). There was literally nothing that we didn't try. With
> marginal support from any of the vendors by the way, except StorageTek.
>
> There seemed to be no correlation between events in NetBackup or issues
> directly related to the hardware. Over the past (many) weeks, we did notice
> that we had occasional network problems. Specifically, the Master and Media
> servers deciding to not communication on the Gigabit Ethernet LAN. We
> originally had Compaq Gig-NIC's, but they seemed to be having a lot of
> packet over-run problems, among others. We have installed the 3Com card
> instead. This helped, but did not resolve the issues.
>
> Finally, one of our guys started thinking about SSO being able to
> communicate with itself, server to server to coordinate the SCSI
> Reserve/Release function. With this in mind, he installed a second NIC (yes
> the original Compaq card) and set the hosts tables so that the Master and
> Media servers would use only the dedicated channel to communicate.
>
> We have now run for three days, including a full weekend running over 1500
> separate small jobs. No a single problem. I'll admit that it is still too
> early to put this matter to bed just yet, but this solution looks very
> promising at this point.
>
> Has anyone else seen problems of this sort?
>
> David Anderson
> ScrippsHealth Information Services
>
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