Systems Operations Workbench
Compare storage layouts, inspect evidence and make safe technician decisions across hardware, virtualization and maintenance. Nothing here changes a real system.
RAID capacity & failure planner
Change the array topology. Calculations assume equal-sized disks, decimal TB, and no hot spares, metadata, filesystem overhead, or vendor-specific constraints.
Raw capacity: 8 TB
Failure tolerance: One disk failure tolerated
Parity is distributed; rebuilds add stress to remaining members.
RAID is not a backup. Recovery still requires appropriately protected, tested restore points.
Read the ticket. Defend the next move.
Three-stage decisions: investigate the evidence, choose a controlled action, then establish what would verify recovery. Incorrect choices explain the risk and can be retried.
Shared Files Slow After a Disk Alert
An MSP client reports that file shares still load, but saves and directory browsing are slow. The array is RAID 5 with four drives. Drive bay 3 is failed; another member shows rising media errors.
- Controller: RAID 5, DEGRADED, bay 3 FAILED
- Bay 4: media errors increasing; global hot spare not assigned
- Backup dashboard: last night SUCCESS; no verified restore test in the last quarter
- Business impact: 120 active file-share users
Which first evidence package best frames the repair risk?
Bring the investigation back to the concepts.
Use the relevant guides to understand why these decisions matter before attempting production changes.