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VMware VDT- VCF Diagnostic Tool Overview VDT (developed and built by VMware Support) is a utility designed to run a series of comprehensive checks live on a target appliance. In its current state, VDT supports the vCenter Server and SDDC Manager appliances. The VCF Diagnostic Tool (VDT) is a diagnostic tool that is run directly on the SDDC Manager or vCenter server. It runs through a series of checks on the system configuration and reports user-friendly PASS/WARN/FAIL results for known configuration issues. It also provides information (INFO) messages from certain areas which we hope will make detecting inconsistencies easier. The goal of these tests is to provide live diagnostic information to the user about their environment which might otherwise be missed.   This tool is completely read-only for the entire environment. hence, it will not make any changes to the environment and no risks to use it. Another important thing about this tool that, it is completely offline a...

CVE-2023-48795 describes a vulnerability in OpenSSH v9.5 and earlier. This vulnerability, also known as the "Terrapin attack", could allow an attacker to downgrade the security of an SSH connection by manipulating information transferred during the the connection's initial handshake/negotiation sequence.  The attacker must have already gained access to the local network, and must be able to both intercept communications and assume the identity of both the recipient and the sender.   The CVSS 3.x rating of "Medium" reflects the difficulty in successfully exploiting this vulnerability. CVE-2023-48795 has since been resolved in OpenSSH v9.6. It's mitigation requires both client and server implementations to be upgraded to this fixed or later version. Additionally, this vulnerability can also be addressed by disabling use of the "ChaCha20-Poly1305" cipher in affected OpenSSH implementations.  This vulnerbility affects all systems having...

  VMware vSAN 8™, Introduces the revolutionary  Express Storage Architecture ™.  This is an optional, alternative storage architecture to the vSAN original storage architecture also found in vSAN 8.  When running on qualified hardware in approved vSAN ReadyNodes, the vSAN Express storage architecture will offer supreme levels of performance, scalability, resilience, and data services without compromising performance.  The vSAN Express Storage Architecture unlocks the capabilities of modern hardware to allow the workloads of today and tomorrow. Below are some key differences between OSA and ESA Architecture. OSA: Original Storage Architecture 1. OSA is a vSAN Distributed File System (vDFS) 2. Drives like SSDs, HDDs, and hybrid supported by OSA. 3. 1 Cache drive per Disk group is supported by OSA. 4. Hardware requirements for OSA is Varies as per vSAN config. 5. With OSA we can get good performance by leveraging different RAID policies with strippin...