Rausfinden welche timeout's in Secunden gerade gelten:

for a in /sys/class/scsi_device/*/device/timeout; do echo -n "$a "; cat "$a" ; done;

Ändern mit:

echo 180 > /sys/class/scsi_device/0\:0\:0\:0/device/timeout

Dauerhaft ändern über /etc/udev/rules.d/99-vmware-scsi-udev.rules

# Redhat systems
ACTION=="add", BUS=="scsi", SYSFS{vendor}=="VMware, " , SYSFS{model}=="VMware Virtual S",
RUN+="/bin/sh -c 'echo 180 >/sys$DEVPATH/device/timeout'"

# Debian systems
ACTION=="add", SUBSYSTEMS=="scsi", ATTRS{vendor}=="VMware  " , ATTRS{model}=="Virtual disk    ",
RUN+="/bin/sh -c 'echo 180 >/sys$DEVPATH/device/timeout'"

# SuSE / Ubuntu systems
ACTION=="add", SUBSYSTEMS=="scsi", ATTRS{vendor}=="VMware, " , ATTRS{model}=="VMware Virtual S",
RUN+="/bin/sh -c 'echo 180 >/sys$DEVPATH/device/timeout'"