Portal | Level: L2: Operations | Topics: Storage (SAN/NAS/DAS), VLANs | Domain: DevOps & Tooling
Symptoms: Backup Job Failing, iSCSI Target Unreachable, Fix Is VLAN Config¶
| File | Purpose |
|---|---|
| symptoms.md | Problem statement and observable symptoms |
| questions.md | Diagnostic questions to work through |
| investigation.md | Full investigation path across domains |
| remediation.md | Cross-domain fix and verification |
| grading.md | Self-assessment rubric |
Cross-domain incident study — see cross-domain index for context.
Pages that link here¶
- Cisco Fundamentals for DevOps
- Cross-Domain Incident Case Studies
- DHCP Not Working on Remote VLAN
- Grading Rubric
- HBA Firmware Mismatch Causing I/O Errors
- Multicast Traffic Not Crossing Router
- NVMe Drive Disappeared After Reboot
- Network Experiencing Broadcast Storm and High CPU on Switches
- Networking Fundamentals
- Primer
- Primer
- RAID and Storage Internals
- Scenario: VLAN Trunk Mismatch — Server Cannot Reach Its Gateway
- Storage Operations - Primer
- VLAN Trunk Mistag
Wiki Navigation¶
Prerequisites¶
- Datacenter & Server Hardware (Topic Pack, L1)
Related Content¶
- Case Study: DHCP Relay Broken (Case Study, L1) — VLANs
- Case Study: HBA Firmware Mismatch (Case Study, L2) — Storage (SAN/NAS/DAS)
- Case Study: Multicast Not Crossing Router (Case Study, L2) — VLANs
- Case Study: NVMe Drive Disappeared (Case Study, L2) — Storage (SAN/NAS/DAS)
- Case Study: Network Loop Broadcast Storm (Case Study, L2) — VLANs
- Case Study: VLAN Trunk Mistag (Case Study, L1) — VLANs
- Cisco Fundamentals for DevOps (Topic Pack, L1) — VLANs
- Deep Dive: RAID and Storage Internals (deep_dive, L2) — Storage (SAN/NAS/DAS)
- Networking Deep Dive (Topic Pack, L1) — VLANs
- Scenario: VLAN Trunk Mismatch (Scenario, L2) — VLANs