SMR hard drives can cause performance issues for NAS systems

xda-developers.com

SMR hard drives can cause significant issues for NAS systems, particularly during data rebuilding processes. SMR drives use overlapping data tracks to increase storage density, which drastically slows down resilvering in RAID or ZFS arrays by requiring rewriting adjacent tracks. While SMR drives are suitable for archival or infrequent access, CMR drives are recommended for NAS arrays with frequent writes to avoid performance degradation and potential data loss.


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SMR hard drives can cause performance issues for NAS systems | News Minimalist