====== NAS - Build a Linux NAS - Monitor the System ====== ===== Quick Overview ===== cat /proc/mdstat returns: ---- ===== Detailed Overview ===== mdadm --detail /dev/md0 returns: ---- ===== Extensive Details ===== ls /sys/devices/virtual/block/md0/md/ returns: array_size component_size dev-sdc1 metadata_version raid_disks reshape_position stripe_cache_size sync_completed sync_speed array_state degraded dev-sdd1 mismatch_cnt rd0 resync_start suspend_hi sync_force_parallel sync_speed_max bitmap_set_bits dev-sda1 layout new_dev rd1 safe_mode_delay suspend_lo sync_max sync_speed_min chunk_size dev-sdb1 level preread_bypass_threshold rd2 stripe_cache_active sync_action sync_min **NOTE:** Salient items include: * **sync_speed**: * **sync_completed**: