6.3

Alert Definition Symptom Recommendations
Datastore has one or more hosts that
have lost redundant paths to a storage
device.
Host(s) lost redundancy to storage
device(s) (fault symptom).
The storage device path, for example,
vmhba35:C1:T0:L7, contains several
potential failure points:
Path Element | Failure Point
--------------------------------------- vmhba35
| HBA (Host Bus Adapter) C1 |
Channel T0 | Target (storage processor
port) L7 | LUN (Logical Unit Number
or Disk Unit).
Use the following guidance to
determine the cause of the failure or to
eliminate possible problems. Identify
the available storage paths to the
reported storage device by running
esxcfg-mpath - l. For more
information, see
hp://kb.vmware.com/kb/1003973.
Check that a rescan does not restore
visibility to the targets. For
information on rescanning the storage
device by using the command-line
interface and the vSphere Client, see
hp://kb.vmware.com/kb/1003988.
Determine whether the connectivity
issue is with the iSCSI storage or the
ber storage. Troubleshoot the
connectivity to the iSCSI storage by
using the software initiator:
1 Check whether a ping to the
storage array fails from ESX. For
more information,
seehp://kb/vmware.com/kb/10034
86.
2 Check whether a vmkping to each
network portal of the storage array
fails. For more information,
seehp://kb.vmware.com/kb/10037
828.
3 Check that the initiator is
registered on the array. For more
information, contact your storage
vendor.
4 Check that the following physical
hardware is functioning correctly:
Ethernet switch, Ethernet cables
between the switch and the ESX
host, and Ethernet cables between
the switch and the storage array.
To troubleshoot the connectivity to the
ber-aached storage, check the ber
switch. The ber switch zoning
conguration permits the ESX host to
see the storage array. If you require
assistance, contact your switch vendor.
The ber switch propagates RSCN
messages to the ESX hosts. For more
information about conguring the
ber switch,
seehp://kb.vmware.com/kb/1002301.
Chapter 3 Alert Definitions in vRealize Operations Manager
VMware, Inc. 157