6.0.1

d Click Add Row and add the following parameters:
Name Value
scsi#.returnNoConnectDuringAPD True
scsi#.returnBusyOnNoConnectStatus False
e Click OK.
Collecting Diagnostic Information for ESXi Hosts on a Storage Device
During a host failure, ESXi must be able to save diagnostic information to a precongured location for
diagnostic and technical support purposes.
Typically, a partition to collect diagnostic information, also called VMkernel core dump, is created on a local
storage device during ESXi installation. You can override this default behavior if, for example, you use
shared storage devices instead of local storage. To prevent automatic formaing of local devices, detach the
devices from the host before you install ESXi and power on the host for the rst time. You can later set up a
location for collecting diagnostic information on a local or remote storage device.
When you use storage devices, you can select between two options of seing up core dump collection. You
can use a precongured diagnostic partition on a storage device or use a le on a VMFS datastore.
n
Set Up a Device Partition as Core Dump Location on page 175
Create a diagnostic partition for your ESXi host.
n
Set Up a File as Core Dump Location on page 176
If the size of your available core dump partition is insucient, you can congure ESXi to generate core
dump as a le.
Set Up a Device Partition as Core Dump Location
Create a diagnostic partition for your ESXi host.
When you create a diagnostic partition, the following considerations apply:
n
You cannot create a diagnostic partition on an iSCSI LUN accessed through the software iSCSI or
dependent hardware iSCSI adapter. For more information about diagnostic partitions with iSCSI, see
“General Boot from iSCSI SAN Recommendations,” on page 107.
n
You cannot create a diagnostic partition on a software FCoE LUN.
n
Unless you are using diskless servers, set up a diagnostic partition on a local storage.
n
Each host must have a diagnostic partition of 2.5 GB. If multiple hosts share a diagnostic partition on a
SAN LUN, the partition should be large enough to accommodate core dumps of all hosts.
n
If a host that uses a shared diagnostic partition fails, reboot the host and extract log les immediately
after the failure. Otherwise, the second host that fails before you collect the diagnostic data of the rst
host might not be able to save the core dump.
Procedure
1 Browse to the host in the vSphere Web Client navigator.
2 Right-click the host, and select Add Diagnostic Partition.
If you do not see this option, the host already has a diagnostic partition.
Chapter 16 Working with Datastores
VMware, Inc. 175