DE6000H Case: Data Loss After Reinserting a Removed Failed Drive
Case report
A customer’s DE6000H had a Dynamic Disk Pool (DDP) larger than 100 TB and several failed drives. The vendor arranged replacements. Following a vendor part-validation/return issue involving one drive, a previously removed failed disk was reinserted into the array.
The source reports more than 100 TB of data loss. Its explanation is that the reinserted disk did not come from the original failed slot, creating an inconsistency in the underlying disk metadata. This is the source author’s incident account, not an independently verified root-cause report.
Maintenance lessons in the source
- Label each removed drive and record its original shelf/slot.
- Avoid reinserting old failed drives into the array as an ad hoc return-validation step.
- For multiple-drive failures, document the data-loss risk, recovery limitations and agreed maintenance responsibility before proceeding.
Product-comparison limitation
The original note compares the DE6000H with NetApp E-Series and mentions Dell MD / IBM DS implementations. Its exact “DE6000H = E2800” assertion is not established by the checked Lenovo English product guide and must not be used to select firmware, parts or a recovery procedure across brands. Use the actual model’s supported maintenance workflow.