VMware diskcontrollers

VMware diskcontrollers
Écrit par Administrator
Dimanche, 20 Janvier 2013 17:15 - Mis à jour Dimanche, 20 Janvier 2013 17:35
The disk controller is the circuit which enables the CPU to communicate with a hard disk ,
floppy disk
or other kind of
disk drive
.
VMware (ESX5.1i) supports the following controllers.
BusLogic Parallel
BusLogic is a 32 bit PCI & limited to DMA upto adresses of 4Gbyte.
BusLogic is not supported in a lot of the newer Operating Systems.Windows default
Deprecated as its not actively improved / freed from bugs.
LSI Logic SAS
aiaPreferrred for use as bootdisk
Recommended for Windows7 (also default).
Linux works better with this.
Required for Microsoft Cluster Server.
Available for hardware version 7 and up.
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VMware diskcontrollers
Écrit par Administrator
Dimanche, 20 Janvier 2013 17:15 - Mis à jour Dimanche, 20 Janvier 2013 17:35
LSI Logic Parallel
Preferrred for use as bootdisk
Recommended for Windows XP (driver must be added manually)
Download from
http://www.lsi.com/cm/DownloadSearch.do?locale=EN
Available for VM with Hardware version 4 and up.
VMware Paravirtual
Guest running hardware version 7 or greater (something for the future).
Best suited for datadisk in high performance storage environments
Optimal for loads of more than 2000 IOPS and 8 outstanding I/Os.
Not suited for DAS environments
Cannot be used for Fault-Tolerancy, Clustering, Boot.
After changes, require a rescan in guest.
Ineffective when (havey) snapshots are in use.
Note, the following is not supported at ESX5.1i
IDE Adapter
completes one command at a time (SCSI: multiple)
Maximum of 4 IDE devices per Vmguest (SCSI: 60)
See http://kb.vmware.com/kb/1016192 how to convert to SCSI.
Sources:
• http://www.vmware.com/pdf/ESX2_Storage_Performance.pdf (technical comparison)
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VMware diskcontrollers
Écrit par Administrator
Dimanche, 20 Janvier 2013 17:15 - Mis à jour Dimanche, 20 Janvier 2013 17:35
• • • • • • • • http://communities.vmware.com/docs/DOC-10971.pdf (buslogic discussion)
http://www.vmware.com/pdf/vsphere4/r41/vsp_41_config_max.pdf (limits)
http://www.vmware.com/pdf/vsp_4_san_design_deploy.pdf (design)
http://www.vmware.com/pdf/GuestOS_guide.pdf (system requirements)
http://www.vmware.com/pdf/vsp_4_pvscsi_perf.pdf (para-virt)
PVSCI and low IO workloads (para-virt perfofmance)
SCSI vs IDE (oldsdchool explanation)
http://myvirtualcloud.net/
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