Large Write Buffer for vSAN 8 OSA Architecture

Wed, 21 Jun 2023 17:07:33 +0000

Introduction

In vSAN 8.0, VMware vSAN introduced support for “Large Write Buffer”(LWB) cache disk size of upto 1.6TB can be used with OSA architecture. Although larger disks were supported in the previous releases for use in caching tier for vSAN OSA disk groups, the write buffer usage was limited to 600GB even when cache disks are larger, using larger disks in the previous releases (7.0 U3 and lower) was only preferred to increase endurance life of Cache Disk SSD.

VSAN 8 on blogs.hareeshkg.com

Large Write Buffer for vSAN 8 OSA Architecture

Introduction