Seyid Arshad

vSAN 8 u1

As of April 18, 2023, vSAN 8 Update 1 is available to all customers and partners through Initial Availability. This post will cover improvements in OSA ar Unbound Scaling with Disaggregated Storage Disaggregation of compute and storage resources in clusters is enhanced with vSAN 8 U1. Customers can scale in new ways by sharing vSANContinue reading “vSAN 8 u1”

vSAN Datastore shown as incompatible, “Storage Fault has occured”

When creating a VSAN policy for erasure coding in a stretched cluster, VSAN datastore is not shown or is incompatible. The precise error message would be Datastore does not match the current VM policy. Storage Fault has occurred. However, vSAN health was all green, no physical disk or component had failed and there is anContinue reading “vSAN Datastore shown as incompatible, “Storage Fault has occured””

vSAN Witness Node Isolation

In a vsan stretched cluster vSAN witness might show as isolated when running the below command, it confirms vsan is Isolated. esxcli vsan cluster get If the output of the command returns:Sub-Cluster Member Count: 1Local Node State: STANDALONE In a vSAN Stretched Cluster, the Witness plays an important role in assuring keeping all the witness componentsContinue reading “vSAN Witness Node Isolation”

vSAN Space Reclamation (TRIM/UNMAP)

From vSAN U1, its possible to reclaim storage space to vSAN via TRIM/ UNAMP. Modern guest OS filesystems have had the ability to reclaim no longer used space using what are known as TRIM/UNMAP commands for the respective ATA and SCSI protocols. In the first place, using of thin provisioning for disks are a smartContinue reading “vSAN Space Reclamation (TRIM/UNMAP)”

VSAN Storage Policy failed to connected to component

In a VSAN environment storage policy determines how objects are stored, what protection measure to be employed. .. But, this article is not about vsan storage policy, but it’s about a strange issue which I faced while applying a policy . Recently, I was working on an customer with a large stretched cluster. Some ofContinue reading “VSAN Storage Policy failed to connected to component”

Resetting Clarion AX4-5 Password

Dealing with a EMC storage appliance without support can be a pain for technical staff . Recently I have been to a customer location where an active Clarion AX4-5 need to be used to provide storage space for a new critical application. But no information with respect to management IP and credentials where available ! IContinue reading “Resetting Clarion AX4-5 Password”

Network Access Control

Identity and access management (IAM) is key to ensure the security of an enterprise network. Threats originating from the outside are dealt with the firewall. But for an enterprise, threats originating internally show no sign of slowing. This part one article will shed some light on internal threats and recommend baby steps to secure the infrastructure. MostContinue reading “Network Access Control”