I have been doing quite a bit of work on First Class Disks (FCD), also known as Improved Virtual Disks (IVD) over the past number of months. One tool that has been extremely useful in improving my understanding of FCDs has been safekeeping, a tool developed by Max Daneri of VMware and which is now available to download on GitHub. If you did not know, FCDs are used extensively in VMware’s new Cloud Native Storage (CNS) offering that is currently available with vSphere/vSAN 6.7U3. Now, whilst the primary aim of this tool is to help backup vendors become familiar with…