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HBA block size received

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Last Modified: 2012-06-21
This is not about the block size of disks.

In windows OS's, I have the option of changing HBA transfer size values of Emulex and Qlogic drivers from a default block of 512kb to a smaller value, such as 128kb.

ESXi 4.x doesn't seem to have the interface options to view or change this data, but I'm being asked questions about these settings and need to be prepared to change them to troubleshoot workload issues with our current SAN (HP EVA 8400)

Is this possible from ESXi 4.x?
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VMware and Virtualization Consultant
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Commented:
OK, THanks.  I didn't think of going into the BIOS
Andrew Hancock (VMware vExpert PRO / EE Fellow)VMware and Virtualization Consultant
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Commented:
Windows, Linux and Unix hosts support the use of SAN Surfer to tweak the settings, but there is no direct access from VMware vSphere ESX/ESXi to control the hbas. (not yet!).
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