QNAS

[~] # parted /dev/sda print
Error: /dev/sda: unrecognised disk label
Model: WDC WD60EJRX-89MP9Y1 (scsi)
Disk /dev/sda: 6001GB
Sector size (logical/physical): 512B/512B
Partition Table: unknown
Disk Flags:
[~] # hdparm -i /dev/sda

/dev/sda:

Model=WDC WD60EJRX-89MP9Y1 , FwRev=80.00A80, SerialNo= WD-WX21DC778L0U
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=0kB, MaxMultSect=16, MultSect=?0?
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2
AdvancedPM=no WriteCache=enabled
Drive conforms to: hard sectored:

* signifies the current active mode

[~] #

# 查看所有實體硬碟的詳細資訊
hdparm -i /dev/sda | grep "Model"
# 或者查看 QNAP 的存儲摘要
cat /proc/mdstat

# 停止服務，防止干擾
/etc/init.d/services.sh stop

# 開始全盤填零（6TB 預計需要 10-15 小時）
dd if=/dev/zero of=/dev/sda bs=1M status=progress