Current configuration of Hastur Raid Array

Live Drives

Device Bracket Description Serial Firmware Warranty Until
sdf 1 DT01ACA300 3TB 84QE6EHGS TZ6 MX6OABB0  
sdd 4 DT01ACA300 3TB 84QDMZ9GS TZ6 MX6OABB0   
sdh 5 DT01ACA300 3TB Z4V4DZVGS TZ6 MX6OABB0 Scan 2017-11-04 RTB
sdc 6 DT01ACA300 3TB Z4V4TR4GS TZ6 MX6OABB0 Scan 2017-11-04 RTB
sde 7 HDWG460UZSVA 6TB 71A0A13QFA4H 0601 Tosh ~2025-05-01
sdg 8 HDWG460UZSVA 6TB 91W0A06JFA4H 0601 Tosh ~2025-05-01

Backup Drives

Device Bracket Description Serial Firmware Warranty Until
sd_   HD204UI 2TB S2HGJ1CZ904925    
sd_ backup510 HD501LJ 500GB S0MUJ1KP715582    
sd_ backup1, off-site HD204UI 2TB      
sd_ backup500, off-site ?? 500GB ??    
sd_ backup300, off-site, usb STBV3000200 3TB NA4KE2M3  
sdh in chassis HD203WI 2TB #S1UYJ1CZ317063[1][7] 1AN10003  

Failed Drives

Device Bracket Description Serial Firmware Warranty Until
sd_ 0F ST3200542AS 2TB #9XW09GDN    
sd_ F WD30EFRX 3TB WCC4N6PT8RHR 1AN10003 WD 2019-01-16
sd_ F ST3200542AS 2TB #9XW08GNB    
sd_ F ST3000DM001 3TB #Z1F1K11M Dead  
sd_ 6F ST3000DM001 3TB #W1F1PG24 Dead  
sd_ F HD203WI 2TB S1UYJ1CZ317052 1AN10002  
sd_ F WD30EFRX 3TB WCC4N6SXZRHD 1AN10003 2021-12-01

Warranty Check

Toshiba : old, storrepair

Western Digital : https://westerndigital.secure.force.com/WarrantyCheck?lang=en

Setting TLER/CCTL

Set 70decisecond read and write error recovery control

smartctl -l scterc,70,70 /dev/sdX

Removing and Replacing a Failed Disk

http://www.ducea.com/2009/03/08/mdadm-cheat-sheet/

mdadm --remove /dev/md6 /dev/sdX   # remove failed disk
mdadm --add /dev/md6 /dev/sdX  # add replacement disk
sysctl dev.raid.speed_limit_max=51200  # limit speed to ~50MB/sec

Extending the filesystem

lvextend --resizefs --size +256GB /dev/vg-md6/media

Log

2013-12-10: Removed failed 2TB sde. Replaced with 500GB backup.
2014-03-20: Moved backup HD204UI into array in place of shrunken HD203WI
2014-07-02: Errors on sde (9XW...). 108 sectors newly reallocated
2015-11-06: Two more Tosh 3TB to replace dead Seagate 3TB
2021-12-01: One WD 3TB failed
2022-05-10: Added 2x Toshiba 6TB (half-capacity)