Red Hat NETSCAPE MANAGEMENT SYSTEM 4.5 User Manual download pdf (Page 36)

Installing, Configuring and Upgrading ESX Server

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Increase this to 192MB for eight virtual machines, 272MB for 16 virtual machines,

384MB for 32 virtual machines or 512MB for more than 32 virtual machines. For

background, see Sizing Memory on the Server on page 249.

Note: Certain storage controllers are sensitive to the memory size setting. If

your server uses a PercRAID or MegaRAID controller, do not use a memory size in

the range 241–271.

6. Allocate storage and network adapters to be used by the console operating

system and virtual machines on the server. Be sure that both the console

operating system and the virtual machines have access to at least one device in

each category.

Storage: A SCSI or RAID adapter should be shared if you want to use that

adapter or array for both the console operating system and virtual machines.

When you are allocating SCSI or RAID devices, the unit of device allocation is a

PCI card device. You may connect multiple SCSI or RAID disks, CD-ROM drives,

tape drives and other devices to the SCSI or RAID adapter.

You should give as many SCSI or RAID devices to the virtual machines as possible

to ensure that the majority of your mass storage resources are used by your

virtual machines. If you do not have any IDE disks, you may have to allocate at

least one SCSI or RAID device to the console operating system, since the console

operating system needs to have a disk from which it and the VMkernel can boot.

Note: If you are installing ESX Server on a Dell PowerEdge 8450, you must

assign the on-board Symbios controller for use exclusively by the virtual

machines.

Some adapter cards have multiple functions, which means there are multiple

adapters on each card. When you allocate a SCSI or RAID device to the console

operating system or to the VMkernel, you are effectively allocating all the SCSI or

RAID disks, CD-ROM drives and other attached devices along with the adapter.

As a result, you have only coarse-grained control over how you allocate SCSI and

RAID devices.

Consider this example: Suppose your machine has SCSI adapters vmhba0 and

vmhba1 that are on the same SCSI adapter card. If you choose to share one of

the adapters, you must share both. Similarly, if you choose to allocate one of the

adapters for use by virtual machines, you must allocate both for use by virtual

machines.

Network: It is generally best to assign the first Ethernet adapter on the list to the

console operating system and set the other adapters to be used by virtual

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Red Hat NETSCAPE MANAGEMENT SYSTEM 4.5 User Manual Page 36