- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Hello Aquila,
Summary of each disk-type:
Thin: Allocate and zero on first write
Thick Lazy: Allocate in advance and zero on first write
Thick Eager: Allocate and zero in advance
rickardnobel.se/eager-thick-vs-lazy-thick-disk-performance/
When to use one over another should be based on the requirements of the VM/Application using the disks -
Do you want to save space?
Do they need the best disk performance possible?
Do they have a high rate of data change?
Some applications (such as those using multi-writer flag) have a requirement for Thick Eager-zeroed disks such as Oracle RAC:
kb.vmware.com/kb/1034165
Other applications also advise using Eager-zeroed for databases such as SAP:
vmware.com/files/pdf/solutions/sap/sap-solutions-on-vmware-best-practices-guide.pdf
So essentially it comes down to what you are using these disks for and which attributes take priority.
Bob
-o- If you found this comment useful please click the 'Helpful' button and/or select as 'Answer' if you consider it so, please ask follow-up questions if you have any -o-