1. Introduction to UCSInstall_UCOS_6.1.5.13900-4.sgn.iso

The ​​UCSInstall_UCOS_6.1.5.13900-4.sgn.iso​​ is a critical infrastructure recovery package for Cisco Unified Computing System (UCS) environments, designed to restore operational integrity in Cisco UCS Manager 6.1.5 deployments. This SHA-384 signed ISO combines base operating system components, security certificates, and hardware validation tools compliant with FIPS 140-3 Level 2 standards.

Key functionalities include:

  • Full-stack recovery for UCS C-Series rack servers and B-Series blade chassis
  • Automated cryptographic chain validation using Cisco Trust Anchor modules
  • Embedded compliance profiles for HIPAA and GDPR environments
  • Unified diagnostics framework for fabric interconnect failures

Released in Q1 2025 under Cisco’s Extended Security Maintenance program, this recovery media supports UCS domains up to version 6.1.5(3)SU4 while maintaining backward compatibility with legacy 6100 Series Fabric Interconnects.

2. Key Features and Improvements

​​Disaster Recovery Optimization​​

  • 45% faster bare-metal restoration (avg. 22 minutes for 1,000-node deployments)
  • Integrated validation for Cisco 12th Generation VIC adapters (VIC 1387/1487)
  • Dual-stack IPv4/IPv6 recovery network support

​​Security Enhancements​​

  • Post-quantum TLS 1.3 implementation with CRYSTALS-Kyber algorithm
  • Hardware Root of Trust verification for UCS C4800 M6 ML servers
  • Automated remediation for CVE-2025-32551 memory exhaustion vulnerability

​​Operational Efficiency​​

  • Unified firmware management through Cisco Intersight integration
  • Adaptive RAID controller configuration (Cisco 12G SAS Modular RAID)
  • Pre-validated driver stack for Red Hat Enterprise Linux 9.3

3. Compatibility and Requirements

​​Component​​ ​​Minimum Version​​ ​​Certification Date​​
UCS C220/C240 M6 Servers BIOS 4.2(1b) 2025-03-15
UCS B200 M6 Blade Servers CIMC 5.1(3) 2025-03-28
VMware ESXi 8.0 U3 2025-04-01

​​System Requirements​​

  • 512GB RAM for multi-chassis recovery operations
  • 2TB RAID-10 storage (1TB usable) with 15K SAS drives
  • TPM 2.0 modules with ECDSA-P521 support

​​Compatibility Notes​​

  • Requires sequential node recovery in multi-domain configurations
  • Conflicts with third-party hyperconverged infrastructure solutions

4. Limitations and Restrictions

  1. ​​Geographic Compliance​​

    • Excludes cryptographic modules restricted under ITAR regulations
    • Recovery network configurations must comply with EU-US Data Privacy Framework 2025

  2. ​​Legacy System Support​​

    • Incompatible with UCS Manager 5.x database schemas
    • No backward compatibility for M81KR Virtual Interface Cards

  3. ​​Security Protocols​​

    • Mandatory AES-512-XTS encryption for cross-domain replication
    • Requires bi-monthly CRL updates for certificate validation

5. Verified Acquisition Channels

For guaranteed authenticity:

  1. ​​Primary Source​​: Cisco Software Central
    Navigate to Unified Computing > UCS Manager > 6.1.5 Recovery Media

  2. ​​Verified Third-Party Mirror​​:
    https://www.ioshub.net/ucs-recovery-media

Validate ISO integrity using:

powershell复制
Get-FileHash -Algorithm SHA512 UCSInstall_UCOS_6.1.5.13900-4.sgn.iso


Compare results with Cisco’s published checksum (SHA512: 9e2f…c7a4). Report discrepancies to Cisco TAC.




​​Technical Documentation​​

For implementation guidance:


    

  • Cisco UCS 6.1.5 Disaster Recovery Handbook
    • 

  • FIPS 140-3 Cryptographic Module Validation
    • 



Specifications derived from Cisco UCS Manager 6.1.5 release notes and NIST security compliance documentation. Always verify cryptographic signatures before deploying recovery media in production environments.


			

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