Specifications

VMware, Inc. 75
Chapter 2 Creating and Configuring Virtual Machines
targeted!disk!is!busy,!rather!than!unavailable,!may!cause!mirroring!programs!to!repeat!
the!connection!attempt!instead!of!selecting!a!duplicate!disk.
ESX!Server!does!not!include!an!explicit!returnBusyOnNoConnectStatus!option!
definition!for!each!SCSI!disk!in!a!virtual!machine!automatically.!If!the!option!is!not!
defined!for!a!disk!in!
the!virtual!machine!configuration!file,!ESX!Server!defaults!to!TRUE.!
You!need!to!both!create!an!option!definition!for!each!disk!and!set!it!to!FALSE!to!override!
the!default!value!of!TRUE.!See!“Setting!Startup!and!Shutdown!Options!by!Modifying!
the!Configuration!File!Directly!(Advanced!Users!Only)”!on!page 126.
Modifying the SMBIOS UUID
Each!ESX!Server!virtual!machine!is!automatically!assigned!a!universally!unique!
identifier!(UUID),!which!is!stored!in!the!SMBIOS!system!information!descriptor.!It!can!
be!accessed!by!standard!SMBIOS!scanning!software!and!used!for!systems!management!
in!the!same!ways!you!use!the!UUID!of!a!physical!computer.
The!UUID!is!
a!128‐bit!integer.!The!16!bytes!of!this!value!are!separated!by!spaces!except!
for!a!dash!between!the!eighth!and!ninth!hexadecimal!pairs.!A!sample!UUID!might!look!
like!this:
00 11 22 33 44 55 66 77-88 99 aa bb cc dd ee ff
Generating the UUID Automatically
The!automatically!generated!UUID!is!based!on!the!physical!computer’s!identifier!and!
the!path!to!the!virtual!machine’s!configuration!file.!This!UUID!is!generated!when!you!
power!on!or!reset!the!virtual!machine.!The!UUID!that!is!generated!remains!the!same!as!
long!as!the!virtual!machine!is!not!moved!or
!copied.
The!automatically!generated!UUID!is!written!to!the!virtual!machine’s!configuration!file!
as!the!value!of!uuid.location.!
If!you!move!or!copy!the!virtual!machine,!you!can!create!a!new!UUID!the!first!time!you!
power!on!the!virtual!machine.!The!new!UUID!is!based!on!the!physical!computerʹ
s!
identifier!and!path!to!the!virtual!machineʹs!configuration!file!in!its!new!location.!
When!you!power!on!a!virtual!machine!that!was!moved!or!copied!to!a!new!location,!a!
message!appears.!See!Figure 2‐2.
N
OTE Using!returnBusyOnNoConnectStatus!is!supported!only!in!virtual!machines!using!a!
Windows!guest!operating!system.