All posts tagged VMFS

VMFS3 Heap Size (MaxHeapSizeMB)

This article gives you more information on the VMFS3.MaxHeapSizeMB advanced parameter. Let’s start off with VMware KB article 1004424 describing the method to increase the VMFS3 Heap Size in case you see the following error message in /var/log/vmkernel or /var/log/messages log: vmkernel: 8:18:59:58.640 cpu2:1410)WARNING: Heap: 1370: Heap_Align(vmfs3, 4096/4096 bytes, 4 align) failed. caller: 0x8fdbd0 vmkernel: 8:18:59:58.640 […]

VMFS Datastore Permissions, useful for SRM

Lately I visited a customer who, depending on their customers SLA, provided either SRM protected VM’s (SLA-1) or non-SRM protected VM’s (SLA-2). The technical difference between these SLA’s is that SRM protected VM’s must be placed on LUN’s that are replicated between storage arrays. Different departments are responsible for creating either SLA-1 or SLA-2 VM’s and operational procedures are in place to make sure that the right […]