On Monday, 5 May 2025 22:15:52 British Summer Time Dale wrote:
> Howdy,
> 
> I ran up on a couple deals.  I first bought a 16TB drive which worked
> fine.  Then I saw a deal on a 20TB drive.  I first put it in a external
> enclosure and connected it by eSATA cable to my new rig.  I got this in
> messages.
> 
> 
> May  5 15:41:31 Gentoo-1 kernel: ata4: found unknown device (class 0)
> May  5 15:41:40 Gentoo-1 kernel: ata4: softreset failed (1st FIS failed)
> May  5 15:41:41 Gentoo-1 kernel: ata4: found unknown device (class 0)
> May  5 15:41:50 Gentoo-1 kernel: ata4: softreset failed (1st FIS failed)
> May  5 15:41:51 Gentoo-1 kernel: ata4: found unknown device (class 0)
> May  5 15:41:59 Gentoo-1 kernel: ata4: found unknown device (class 0)
> May  5 15:41:59 Gentoo-1 kernel: ata4: SATA link up 1.5 Gbps (SStatus
> 113 SControl 300)
> May  5 15:41:59 Gentoo-1 kernel: ata4: link online but 1 devices
> misclassified, retrying
> May  5 15:41:59 Gentoo-1 kernel: ata4: reset failed (errno=-11),
> retrying in 27 secs
> May  5 15:42:26 Gentoo-1 kernel: ata4: SATA link up 1.5 Gbps (SStatus
> 113 SControl 300)
> May  5 15:42:26 Gentoo-1 kernel: ata4.00: ATA-11: ST20000NM007D-3DJ103,
> SN05, max UDMA/133
> May  5 15:42:26 Gentoo-1 kernel: ata4.00: 39063650304 sectors, multi 16:
> LBA48 NCQ (depth 32), AA
> May  5 15:42:26 Gentoo-1 kernel: ata4.00: Features: NCQ-sndrcv
> May  5 15:42:26 Gentoo-1 kernel: ata4.00: configured for UDMA/133
> May  5 15:42:26 Gentoo-1 kernel: scsi 3:0:0:0: Direct-Access    
> ATA      ST20000NM007D-3D SN05 PQ: 0 ANSI: 5
> May  5 15:42:26 Gentoo-1 kernel: sd 3:0:0:0: Attached scsi generic sg2
> type 0
> May  5 15:42:26 Gentoo-1 kernel: sd 3:0:0:0: [sdk] 39063650304 512-byte
> logical blocks: (20.0 TB/18.2 TiB)
> May  5 15:42:26 Gentoo-1 kernel: sd 3:0:0:0: [sdk] 4096-byte physical blocks
> May  5 15:42:26 Gentoo-1 kernel: sd 3:0:0:0: [sdk] Write Protect is off
> May  5 15:42:26 Gentoo-1 kernel: sd 3:0:0:0: [sdk] Mode Sense: 00 3a 00 00
> May  5 15:42:26 Gentoo-1 kernel: sd 3:0:0:0: [sdk] Write cache: enabled,
> read cache: enabled, doesn't support DPO or FUA
> May  5 15:42:26 Gentoo-1 kernel: sd 3:0:0:0: [sdk] Preferred minimum I/O
> size 4096 bytes
> May  5 15:42:26 Gentoo-1 kernel: sd 3:0:0:0: [sdk] Attached SCSI disk
> 
> 
> I thought it might be the enclosure so I booted up my NAS box, removed
> the drive from the enclosure and connected it bare by SATA cable to the
> NAS box mobo SATA connector.  This is what NAS box shows. 
> 
> 
> May  5 16:00:20 nas kernel: ata4: link is slow to respond, please be
> patient (ready=0)
> May  5 16:00:24 nas kernel: ata4: found unknown device (class 0)
> May  5 16:00:24 nas last message buffered 1 times
> May  5 16:00:24 nas kernel: ata4: SATA link up 3.0 Gbps (SStatus 123
> SControl 300)
> May  5 16:00:24 nas kernel: ata4: link online but 1 devices
> misclassified, retrying
> May  5 16:00:30 nas kernel: ata4: link is slow to respond, please be
> patient (ready=0)
> May  5 16:00:34 nas kernel: ata4: found unknown device (class 0)
> May  5 16:00:34 nas last message buffered 1 times
> May  5 16:00:34 nas kernel: ata4: SATA link up 3.0 Gbps (SStatus 123
> SControl 300)
> May  5 16:00:34 nas kernel: ata4: link online but 1 devices
> misclassified, retrying
> May  5 16:00:40 nas kernel: ata4: link is slow to respond, please be
> patient (ready=0)
> May  5 16:00:42 nas kernel: ata4: SATA link up 3.0 Gbps (SStatus 123
> SControl 300)
> May  5 16:00:42 nas kernel: ata4.00: ATA-11: ST20000NM007D-3DJ103, SN05,
> max UDMA/133
> May  5 16:00:42 nas kernel: ata4.00: 39063650304 sectors, multi 16:
> LBA48 NCQ (depth 32), AA
> May  5 16:00:42 nas kernel: ata4.00: Features: NCQ-sndrcv
> May  5 16:00:42 nas kernel: ata4.00: configured for UDMA/133
> May  5 16:00:42 nas kernel: scsi 3:0:0:0: Direct-Access     ATA     
> ST20000NM007D-3D SN05 PQ: 0 ANSI: 5
> May  5 16:00:42 nas kernel: sd 3:0:0:0: Attached scsi generic sg1 type 0
> May  5 16:00:42 nas kernel: sd 3:0:0:0: [sdb] 39063650304 512-byte
> logical blocks: (20.0 TB/18.2 TiB)
> May  5 16:00:42 nas kernel: sd 3:0:0:0: [sdb] 4096-byte physical blocks
> May  5 16:00:42 nas kernel: sd 3:0:0:0: [sdb] Write Protect is off
> May  5 16:00:42 nas kernel: sd 3:0:0:0: [sdb] Write cache: enabled, read
> cache: enabled, doesn't support DPO or FUA
> May  5 16:00:42 nas kernel: sd 3:0:0:0: [sdb] Preferred minimum I/O size
> 4096 bytes
> May  5 16:00:42 nas kernel: sd 3:0:0:0: [sdb] Attached SCSI removable disk
> 
> 
> Connected directly, no external enclosure, it connects at normal speed. 
> Maybe the enclosure limits the speed???  What concerns me with the NAS
> box info, the first part about slow to respond.  Is that normal?  Also,
> is it likely since it works on the NAS box at full speed that the
> enclosure is causing the slow down or is that slow to respond a possible
> cause? 
> 
> I ran the conveyance and short test and it passed both tests.  I'm about
> to start the long test.  I figure that will take a couple days, or close
> to it.  Looking for thoughts on whether this drive has issues.  I might
> add, the company I buy from packages their drives to survive about
> anything.  Drive is put in a tough plastic bubble wrap made just for
> hard drives and that is placed in a box.  They then wrap that box in
> large bubble wrap, like any of us can buy, and put that in a large
> second box.  I can't imagine the drive being damaged in shipping. 
> 
> Oh, when I get a new drive, I first watch messages to see how it
> connects.  Then I run conveyance test, short test and then long test. 
> If it passes all that, I then add it to a LVM drive set or use in some
> other way.  I'm thinking about buying another spare 20TB.  Good deal at
> just over $200 and current drive has only 2 run hours.  O_O 
> 
> Thoughts on the above info?  Anyone seen this before?  Is this drive
> perfectly fine?  Need to return?
> 
> Thanks.
> 
> Dale
> 
> :-)  :-) 

Initially I'd be suspecting the SATA cable/port, but if you tried another MoBo 
did you also try a different SATA cable?

Were the ports you connected to compatible with SATA 3 revision capable of 
6Gb/s?  Notwithstanding the warnings and errors you'd want the highest 
transfer speed you can get on a new drive.

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