​​Introduction to ciscocm.free_common_space_v1.5.cop.sgn​​

The ​​ciscocm.free_common_space_v1.5.cop.sgn​​ is a critical maintenance package designed for Cisco Unified Communications Manager (CUCM) administrators managing disk space constraints in clustered deployments. Released on March 15, 2024, this 128MB Cisco Options Package (COP) file addresses persistent storage inefficiencies in CUCM versions 14SU1 and later by purging non-essential diagnostic logs, temporary crash files, and deprecated localization data.

This utility targets CUCM clusters experiencing ​​/common​​ partition saturation (≥90% utilization) due to accumulated transient files from prolonged operation. It supports both on-premises CUCM deployments and hybrid cloud implementations integrated with Cisco Webex Edge.

​​Key Features and Improvements​​

​​Storage Reclamation Engine​​

  • ​​Automated log rotation​​: Aggressively truncates oversized ​​diag​​ logs exceeding 2GB while preserving active troubleshooting data.
  • ​​Multi-language cleanup​​: Removes deprecated language packs (e.g., obsolete Portuguese-Brazil localization files) no longer required post-CUCM 12.5 localization model updates.

​​Security Enhancements​​

  • ​​SHA-512 checksum validation​​: Ensures COP file integrity during installation, aligning with Cisco’s 2024 cryptographic standards for signed packages.
  • ​​RBAC compliance​​: Restricts execution to CUCM OS administrators with ​​Advanced Storage Maintenance​​ role privileges.

​​Performance Optimization​​

  • ​​Inode regeneration​​: Resolves “No space left on device” errors caused by exhausted inode counts despite available disk capacity.
  • ​​Database index defragmentation​​: Redresses SQLite fragmentation in ​​Cisco CDR Analysis and Reporting (CAR)​​ tablespaces.

​​Compatibility and Requirements​​

​​Supported Platforms​​

Component Version Notes
CUCM 14SU1+, 15.0(2) Requires ​​PLATFORM-14.0-2023SR1​​ or later
Hypervisor VMware ESXi 7.0+, KVM 3.10+ 64GB RAM minimum for multi-node clusters
Storage 500GB+ ​​/common​​ partition Pre-upgrade free space ≥15% mandatory

​​Interoperability Restrictions​​

  • ​​Cisco Unity Connection​​: Incompatible with CUC 12.5(1) due to shared ​​/common​​ mount point conflicts.
  • ​​Third-party backups​​: Verify Veeam/Commvault integrations post-installation to prevent backup job failures.

​​Obtaining the Software​​

The ​​ciscocm.free_common_space_v1.5.cop.sgn​​ is available exclusively through:

  1. ​​Cisco Software Center​​: Access via software.cisco.com using Smart Account with ​​CUCM Advanced Maintenance​​ entitlements.
  2. ​​TAC-Approved Emergencies​​: Contact Cisco Technical Assistance Center (TAC) with ​​Show tech storage​​ outputs for expedited access during critical outages.

For validated SHA-512 checksums and verified download mirrors, visit IOSHub, which provides direct links alongside pre-installation health check scripts.

​​Implementation Guidelines​​

  1. ​​Pre-deployment checklist​​:
    • Run ​​utils diagnose storage​​ to confirm ​​/common​​ utilization thresholds.
    • Disable ​​Cisco Real-Time Monitoring Tool (RTMT)​​ logging during maintenance windows.
  2. ​​Post-installation actions​​:
    • Validate reclaimed space via ​​df -h /common​​.
    • Rebuild CAR database indexes using ​​run sql select indexrebuild​​ CLI command.

For detailed procedures, refer to Cisco Unified Communications Manager Storage Maintenance Guide (Document ID: 78-163975-02).

: CUCM 14SU1 storage management requirements (Cisco release notes)
: SHA-512 signing key implementation for COP files
: CAR database optimization guidelines
: RTMT logging best practices during maintenance
: Third-party backup integration advisories
: IOSHub storage tool validation methodology

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