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26 Cards in this Set
- Front
- Back
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What are the Origins of VMware?
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Stanford Univ, now a subs of EMC, 1988
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Traditional x86 architecture vs Virtualization?
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x86- one server one OS, low CPU Utilization
Virtualization- higher cpu utilization, isoloation of each VM |
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Key Bnefits of a VM?
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-Compatibility
-Isolation -Encapsulation -H/W Independence |
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What are the VMware Platfforms?
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-Workstation
-VMware Server (GSX) -ESX Server -ACE |
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How many VMs do GSX and ESX support?
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-GSX, 64
-ESX, 80 |
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Compare the Server Products?
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-GSX
Hosted on Windows/Linux Max H/W compatibility Up to 3.6GB RAM per VM -ESX Runs natively SMP support VMotion Support Dynamic Resource Allocate |
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Whats in a VM?
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-CPU, 1-2
-SCSI Adpt, 1-4 (1-15devices) -Eth Adpt, 1-4 -CD-ROM, up to 2 -Floppy, 1-2 -Parallel, 1-4 -Serial/Com, 1-4 |
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Differences of Virtual and Physical Machines?
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-VMs can use ISOs and FLPs
-VMs can only see virtual devices, unsupported can not be seen |
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ESX Server H/W Minimums?
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-2 Processors
-700mhz Xeon or AMD Opteron -900mhz or AMD Opteron (forSMP) -512 MB RAM -2 Eth Adpt |
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ESX H/W Maximums?
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-16 Processors
-16 HBAs -128 VMFS Vols -64 GB RAM -8 GB Eth Adpt -16 10/100 Eth Adpt |
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Supported Guests?
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NT,XP,2K,2K3,RedHat,SuSe,Novell
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Service Console main parts?
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-Boot Partition
-Mgmt Web Server -VM config files (vmx) -miscellaneous (ISOs etc) |
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VMFS main parts?
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-VMs (vmdk)
-VM suspends (vmss) -Core Dump -Vmkernal Swap -VC Templates (vmtd) |
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Supported Servers?
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IBM,HP,Dell,Fujitsu,Hitachi,NEC,SUN,Unisys,Intel
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Supported HBAs?
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-Emulex
-Qlogic |
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What makes up a VM?
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-vmdk
-nvram -log -vmx |
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Virtual file to disk mapping?
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Each disk maps to a file in VMFS, a raw LUN, or a raw device mapping
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What is RDM?
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a VMFS file that is a symlink to a raw LUN/disk
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What are the RDM modes?
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-Physical Compatibility
-Virtual compatibility |
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Whats the formula for sizing Memory?
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sum the following:
Per Server -vmkernel overhead 24MB -console overhead192-512mb Per VM -vm overhead 64MB -additional 6% of total |
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How many ESX servers can access a LUN
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16
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What are some memory overcommitment techniques?
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-transparent page sharing
-Balloning -Swap to disk |
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What is CPU affinity?
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-the tendency for a process to run on a given CPU as long as possible without being moved to some other processor
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Backup Strategies?
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-Agent in VM
-Agemt in Servoce Console -Consolidated backup -Backup with RDM |
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What types of VM clustering are available?
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-Cluster in a box
-App clustering between ESXs -VM clustering between ESXs -Physical to Virtual |
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What is vmkusage?
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-Creates perfomance Histogram accesible via Web Server
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