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pepe
 Post subject: Re: WDC WD10S21X-24R1BT0-SSHD-8GB
PostPosted: August 26th, 2021, 17:03 
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yep, saw that one... it is similar to mine, but not to the one the OP has. I don't have BigBearH :s

pepe

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fzabkar
 Post subject: Re: WDC WD10S21X-24R1BT0-SSHD-8GB
PostPosted: August 26th, 2021, 17:59 
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This article is interesting:

https://www.tummy.com/blogs/2008/07/03/sata-port-multipliers-under-linux/

The author purchased an external enclosure with an eSATA port. Inside the enclosure was a Silicon Image Port Multiplier.

Quote:
One thing that confused me initially was that the BIOS of the card only sees one drive, and only one drive spins up during the initial pre-boot. I took this as a bad sign, but contacted Adonics and they reported that this was expected… I had also tested by booting CentOS 5, which also only saw one drive.

However, CentOS 5 is an Enterprise release with an older kernel. I tried Ubuntu Hardy, and since it was only released a couple of months ago, it has a much more recent kernel and spun up and saw all the drives.

Well, almost… Sometimes if I boot, particularly after a hard power cycle of all the gear involved, some of the drives (randomly) will not be detected – generating an error when Linux tries to find them. If I reboot, it has always seen all the drives on the next boot.

It seems to me that Ubuntu Hardy should see the HDD on PM port 1 (the SSD is on PM port 0). Maybe that's all we need to access the HDD data?

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pepe
 Post subject: Re: WDC WD10S21X-24R1BT0-SSHD-8GB
PostPosted: August 26th, 2021, 18:21 
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It might be working with BigBear, but with BigBearH it is not the case. As you can see on the OP's photos, it has a PCIe-SATA controller, which suggests that the SSD is interfaced with the MCU through a PCIe lane and it is more closely integrated with the HDD, with its controller. The SSD part is not visible from the outside, only through the HDD controller, at least that's what i expect (I asked MasterT to check which intf goes where, but no answer yet.)
But in any case we could try cheating by hooking up a working sata device on the SSD port.

pepe

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fzabkar
 Post subject: Re: WDC WD10S21X-24R1BT0-SSHD-8GB
PostPosted: August 26th, 2021, 18:37 
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This is confusing:

https://www.smartmontools.org/attachment/ticket/999/smartctl-WDC%20WD10S21X-24R1BT0-SSHD-8GB.txt

Code:
Device Model:     WDC WD10S21X-24R1BT0-SSHD-8GB
6   Serial Number:    WD-WX51A65KXNF2
7   LU WWN Device Id: 5 0014ee 65b386553
8   Firmware Version: 03.01A02
9   User Capacity:    1,000,204,886,016 bytes [1,00 TB]
10   Sector Sizes:     512 bytes logical, 4096 bytes physical
11   Rotation Rate:    5400 rpm
12   Device is:        Not in smartctl database [for details use: -P showall]
13   ATA Version is:   ACS-2 (minor revision not indicated)
14   SATA Version is:  SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s)
15   Local Time is:    Thu Feb 15 21:49:35 2018 CET
16   SMART support is: Available - device has SMART capability.
17   SMART support is: Enabled
18   AAM feature is:   Unavailable
19   APM level is:     88 (intermediate level with standby)
20   Rd look-ahead is: Enabled
21   Write cache is:   Enabled
22   DSN feature is:   Unavailable
23   ATA Security is:  Disabled, NOT FROZEN [SEC1]
24   Wt Cache Reorder: Unknown

smartctl sees the WD10S21X-24R1BT0-SSHD-8GB device as a 1TB HDD. There is no indication of the attached SSD. So this would suggest that the OP should be able to see the drive in the usual way???

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pepe
 Post subject: Re: WDC WD10S21X-24R1BT0-SSHD-8GB
PostPosted: August 26th, 2021, 19:13 
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the 8GB refers to the SSD part size, the host sees it as an 1TB device.
the model name suggests it is an SSHD with 8GB NAND, it won't see the NAND part separately coz it is handled inside the HDD MCU.

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fzabkar
 Post subject: Re: WDC WD10S21X-24R1BT0-SSHD-8GB
PostPosted: August 26th, 2021, 19:36 
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The 8GB NAND is on the 771980 HDD PCB at location U2, or is that an SDRAM??.

The iSSD (on the 771925 PCB) has a capacity of 120GB, IIUC???

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fzabkar
 Post subject: Re: WDC WD10S21X-24R1BT0-SSHD-8GB
PostPosted: August 26th, 2021, 19:56 
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fzabkar wrote:
The iSSD (on the 771925 PCB) has a capacity of 120GB, IIUC???

The markings are ...

    SanDisk
    iSSD
    SD1S6CM 016G
    CHINA
    4084DQ3076

This would suggest a 16GB SSD, not 120GB or 8GB.

I found this similar (?) SDIS6BM 16GB SATA III iSSD:

https://www.smartmontools.org/ticket/923#no1
https://www.smartmontools.org/attachment/ticket/923/smartctl-SanDisk-iSSD_SDIS6BM_016G.txt

Quote:
I found this chip (seems to be an integrated controller & flash-solution) on a generic DOM-style board, markings on the chip itself:
SAMSWEET
SanDisk?
iSSD
SDIS6BM 016G

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fzabkar
 Post subject: Re: WDC WD10S21X-24R1BT0-SSHD-8GB
PostPosted: August 26th, 2021, 20:06 
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fzabkar wrote:
The 8GB NAND is on the 771980 HDD PCB at location U2, or is that an SDRAM??.

Wrong PCB. Sorry.

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fzabkar
 Post subject: Re: WDC WD10S21X-24R1BT0-SSHD-8GB
PostPosted: August 27th, 2021, 16:10 
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I don't understand this product. Why is there a 16GB SSD when the sales docs make no mention of it?

Where is the 8GB NAND? SDRAM?

What is under the 771980 sticker on the main PCB?

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Lardman
 Post subject: Re: WDC WD10S21X-24R1BT0-SSHD-8GB
PostPosted: August 27th, 2021, 16:36 
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fzabkar wrote:
I don't understand this product. Why is there a 16GB SSD when the sales docs make no
Could they have oversized the NAND to allow for wear levelling from their terrible write habits of consoles, in a similar way to the old phones used to chew up their NANDS at an alarming rate?

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fzabkar
 Post subject: Re: WDC WD10S21X-24R1BT0-SSHD-8GB
PostPosted: August 27th, 2021, 17:00 
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If you go to WD's warranty checker ...

https://support-en.wd.com/app/warrantystatus

... you get ...

Quote:
BIGBEARH 5400 8GNF SATA3 6GB/S 1.0 TB 4HD LENOVO CHINA

The label says "native hybrid 8GB NAND", whatever that means.

Was this a special design for Lenovo?

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Lardman
 Post subject: Re: WDC WD10S21X-24R1BT0-SSHD-8GB
PostPosted: August 27th, 2021, 17:38 
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fzabkar wrote:
Was this a special design for Lenovo?
Ran 2 serials from ebay and got the same.

Quote:
BIGBEARH 5400 8GNF SATA3 6GB/S 1.0 TB 4HD LENOVO CHINA

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pepe
 Post subject: Re: WDC WD10S21X-24R1BT0-SSHD-8GB
PostPosted: August 28th, 2021, 5:26 
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It is an SDRAM under the 771980 sticker.
I think the NAND is in form of the iSSD chip, that looks pretty clear. 16G, thick provisioned for wear leveling, probably (only 8G is used).
BTW, mine says 16GB NAND on the label.

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MasterT
 Post subject: Re: WDC WD10S21X-24R1BT0-SSHD-8GB
PostPosted: August 28th, 2021, 5:38 
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Sorry. I was running out of time this week.

Next week i'll post detailed photos of all chips on pcb and details about where the traces go.

Have a nice weekend.
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fzabkar
 Post subject: Re: WDC WD10S21X-24R1BT0-SSHD-8GB
PostPosted: August 28th, 2021, 15:48 
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I don't know if it helps, but this review of the WD40E31X shows the 88i9441-NDB2 "Marvell SoleilH SSHD controller" paired with a JMicron JMF608u2 flash controller (with integrated 8GB NAND?) and a "Marvell 88SE9171 PCie 2-port SATA switch":

https://archive.techarp.com/showarticle49d9.html?artno=929&pgno=2
https://archive.techarp.com/review/Western_Digital/Blue-SSHD-4TB/PCB-02.jpg

Here is another review:

https://www.storagereview.com/review/wd-blue-sshd-4tb-review
https://www.storagereview.com/wp-content/uploads/2015/07/StorageReview-WD-Blue-SSHD-4TB-PCB.jpg

You can just make out the SATA Tx/Rx pairs going to the host.

This is the block diagram of the MCU:
https://archive.techarp.com/review/Western_Digital/Blue-SSHD-4TB/Marvell-88i9441-block-diagram.png

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fzabkar
 Post subject: Re: WDC WD10S21X-24R1BT0-SSHD-8GB
PostPosted: August 28th, 2021, 17:45 
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Another 2.5" model with the same MCU and PCIe chip (WD10J31X-00U3VT0):

https://www.storagereview.com/review/wd-blue-sshd-1tb-review
https://www.techarp.com/articles/wd-blue-sshd-wd10j31x-1tb-review/3/

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pepe
 Post subject: Re: WDC WD10S21X-24R1BT0-SSHD-8GB
PostPosted: August 28th, 2021, 17:53 
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https://www.marvell.com/content/dam/marvell/en/public-collateral/storage/marvell-storage-88se9171-datasheet-2015-11.pdf

the 88SE9171 has one SATA port according to this...

anyway, lets try to cheat it!

pepe

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fzabkar
 Post subject: Re: WDC WD10S21X-24R1BT0-SSHD-8GB
PostPosted: August 28th, 2021, 18:17 
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I found a 2060-771983 PCB (Big Bear) which looks similar to a 2060-771984, except that it doesn't have a port multiplier, or NAND cache, or any connector for an SSD. The MCU package is different, but I'm wondering if this PCB could be used to cheat in the BigBear/hybrid case (donor ROM code + donor loader + patient adaptives). That might be something to try if an SSD cheat doesn't work. Of course this doesn't help the OP.

In any case, @unknown has already stated than an SSD PCB swap does work.

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unknown
 Post subject: Re: WDC WD10S21X-24R1BT0-SSHD-8GB
PostPosted: August 29th, 2021, 8:35 
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fzabkar wrote:
In any case, @unknown has already stated than an SSD PCB swap does work.

Yes, tested.
Without any modification.
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fzabkar
 Post subject: Re: WDC WD10S21X-24R1BT0-SSHD-8GB
PostPosted: August 29th, 2021, 14:44 
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unknown wrote:
fzabkar wrote:
In any case, @unknown has already stated than an SSD PCB swap does work.

Yes, tested.
Without any modification.

Was the patient's data contaminated by the donor's cache???

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