If you want to use a eSATA drive in a QNAP device without plug and play, read the following.
Attach drive to eSATA drive.
[11936.459226] ata5: SATA link up 1.5 Gbps (SStatus 113 SControl F310)
[11936.499252] ata5.00: ATA-8: WDC …., 04.05G09, max UDMA/133
[11936.499295] ata5.00: 3907029168 sectors, multi 0: LBA48 NCQ (depth 31/32)
[11936.539268] ata5.00: configured for UDMA/133
[11936.539323] ata5: EH complete
[11936.539646] scsi 4:0:0:0: Direct-Access WDC WD…. 04.0 PQ: 0 ANSI: 5
[11936.549494] Check proc_name[sata_mv].
[11936.559626] sd 4:0:0:0: [sdza] 3907…. 512-byte logical blocks: (2.00 TB/1.81 TiB)
[11936.559899] sd 4:0:0:0: [sdza] Write Protect is off
Important is sdza
Format the drive:
mke2fs -t ext3 /dev/sdza
Mount the device
mount /dev/sdza1 esata/
If you receive the following error message from your QNAP NAS:
The file system is not clean. It is suggested that you run „check disk“
and a disk check is failed with that message:
[Mirror Disk Volume: Drive 2 3 4 1] Examination failed (Cannot unmount disk).
ssh your qnap and do the following:
/etc/init.d/services.sh stop && /etc/init.d/opentftp.sh stop && /etc/init.d/Qthttpd.sh stop
e2fsck -f -v -C 0 /dev/md0
If you receive the following error while trying to unmount the device:
umount: /share/MD0_DATA: device is busy
try to figure out which process is still using the device:
# lsof +f -- /dev/md0
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
sh 10721 admin cwd DIR 9,0 4096 16252936 /share/MD0_DATA/
lsof 29119 admin cwd DIR 9,0 4096 16252936 /share/MD0_DATA/
lsof 29120 admin cwd DIR 9,0 4096 16252936 /share/MD0_DATA/
Which indicates that your current shell is trying to use the device, simply use: cd / and umount again.
That should help