KBA1305 VMWare and Delphix - Frequently Asked Questions
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Q: We are upgrading from ESX4.x to ESX5.1 or later, would that require a HW version upgrade of the OVA?
No. There is no need to switch unless you need a specific HWv8 feature.
Q: What is the difference between HWv7 and HWv8?
HWv7 runs on ESX4.x and ESX5.1 or later. HWv8 runs on ESX 5.1 or later only. HWv7 may be preferable if the customer is running Delphix in a mixed cluster of vSphere 4.x and later versions.
Additionally, HWv8 has two main features that could impact the Delphix virtual machine.
The first is support for > 256GM of RAM for the VM. If the you are not planning to use more than 256GB of RAM or don't have a vSphere license that can utilize that amount of memory, there is no need to move version 8 when a you upgrade from ESX4.x to ESX5.1 or later.
The second is support for > 8 vCPUs per VM. If the you have no need for more than 8 vCPUs or don't have a vSphere license or Delphix license to allow more than 8vCPUs, there is no need to move version 8 when you upgrade from ESX4.x to ESX5.1 or later.
Q: What are the best settings for ESX and Delphix?
Table: Heap Values and Maximum Storage Sizes
| Version | Minimum heap value | Default value of maximum heap value | Maximum heap value | Default open VMDK storage per host | Maximum open VMDK storage per host |
|---|---|---|---|---|---|
| ESXi/ESX 4.0 | N/A | 16MB | 128MB | 4TB | 32TB |
| ESXi/ESX 4.1 | N/A | 80MB | 128MB | 8TB | 32TB |
| ESXi 5.0 Build 914586 and earlier |
N/A | 80MB | 256MB | 8TB | 25TB |
| ESXi 5.0 Build 1024429 and later |
256MB | 640MB | 640MB | 60TB | 60TB |
| ESXi 5.1 Build 914609 and earlier |
N/A | 80MB | 256MB | 8TB | 25TB |
| ESXi 5.1 Build 1065491 and later |
256MB | 640MB | 640MB | 60TB | 60TB |
| ESXi 5.5† | N/A | N/A | 256MB | 64TB | 64TB |
For more information please see VMware Heap Exhaustion