Latest Blog
Why Does a Deduplicated Backup Repository Act Read-Only After an Interrupted Prune?
A post-prune diagnosis covering locks, partial cleanup, read-only filesystems, immutable objects, workspace shortages, checks, and safe recovery.
Why Does Rsync Recopy Files When Size and the Displayed Date Match?
An Rsync recopy diagnosis covering quick-check rules, hidden timestamp precision, modify-window, forced-transfer flags, SMB timestamps, and controlled tests.
Why Does a Replacement Disk Report a Different Logical Sector Size From the Failed Member?
A sector-format diagnosis covering 512e versus 4Kn, model suffixes, firmware modes, controller presentation, RAID compatibility, alignment, and safe replacem.
Why Does an NVMe SSD Throttle During Small-File Backups but Not One Large Local Copy?
A small-file NVMe diagnosis covering metadata, random I/O, write cache, garbage collection, queue latency, CPU overhead, heat, and controlled comparisons.
Why Can a Drive Report SMART PASSED but Fail at the Same LBA During a Full Read Test?
A surface-read diagnosis covering SMART thresholds, extended tests, repeatable LBAs, vendor scans, media versus transport faults, and rescue-first decisions.
Why Do USB Backup Speeds Collapse After the First 50GB of One Continuous Transfer?
A sustained-transfer diagnosis covering burst cache, SMR behavior, workload changes, USB transport, heat, free-space cleanup, and repeatable tests.
Why Does an HDD Spin Down and Immediately Wake Up Without Any User Access?
A hidden-I/O diagnosis covering standby state, process access, SMART polling, sync and indexing, timers, NAS policies, and stable idle behavior.
Why Do NAS Scrub Errors Follow One Controller Port Across Different Drives?
A port-localized scrub diagnosis covering device mapping, ZFS errors, SATA resets, CRC counters, SMART evidence, controlled swaps, and stop limits.
