Datacenter Operations Case Studies¶

20 incident case studies for hands-on troubleshooting practice.

Case Study	Description
Bios Settings Reset After Cmos	BIOS Settings Reverted After CMOS Battery Replacement
Bmc Clock Skew Cert Failure	BMC Clock Skew - Certificate Failure
Bonding Failover Not Working	Network Bonding Failover Not Working
Cable Management Wrong Port	Server Cabled to Wrong Switch Port / Wrong VLAN
Disk Full Root Services Down	Disk Full Root - Services Down
Firmware Update Boot Loop	Firmware Update Boot Loop
Hba Firmware Mismatch	HBA Firmware Mismatch Causing I/O Errors
Idrac Unreachable Os Up	iDRAC Unreachable, OS Up
Link Flaps Bad Optic	Link Flaps - Bad Optic
Memory Ecc Errors Increasing	Memory ECC Errors Increasing
Nvme Drive Disappeared	NVMe Drive Disappeared After Reboot
Os Install Fails Raid Controller	OS Installation Cannot See Disks
Power Supply Redundancy Lost	Power Supply Redundancy Lost
Pxe Boot Fails Uefi Mismatch	PXE Boot Fails - UEFI Mismatch
Rack Pdu Overload Alert	PDU Reporting Overload Warning
Raid Degraded Rebuild Latency	RAID Degraded Rebuild Latency
Serial Console Garbled	Serial-over-LAN Output Garbled
Server Intermittent Reboot	Server Randomly Rebooting Every Few Hours
Server Remote Console Lag	Remote KVM/Console Extremely Laggy
Thermal Throttle Fan Failure	Thermal Throttle - Fan Failure