Re: Kernel only seeing 2TB of an 8TB disk

["Alexander V. Makartsev" <avbetev@gmail.com>]

On 12.03.2025 04:12, Alex King wrote:

Yes, I can tell you more.  The hardware as you guessed is not actually new, it is recycled equipment that is new to me and newly installed with Debian.

...

           *-scsi
                description: SCSI storage controller
                product: SAS1064ET PCI-Express Fusion-MPT SAS
                vendor: Broadcom / LSI
...
              *-disk
                   description: ATA Disk
                   product: ST8000DM004-2U91
...
                   size: 2047GiB (2199GB)
                   capacity: 2TiB (2199GB)

...

I suspect it's a firmware issue.  I've been through the setup screens and didn't see anything that looked relevant.  I can try to find if Cisco could give me updated firmware for the server, but I'm not confident.

I feel like there could be something basic I'm missing given the other server can address 4TB.  Maybe someone with IBM firmware experience knows which direction I should look.

https://www.broadcom.com/support/knowledgebase/1211161495837/using-drives-2tb-in-capacity-with-lsi-sas-hbas
    It's a hardware limit of this HBA controller. 
    Switching to SAS drives should give you 3TB instead of 2TB. You will
    have to reflash controller with newer IT firmware from Broadcom, if
    it is still available for download, and you will loose RAID
    functionality.
    There is nothing you can do for SATA drives.
    
    Without exaggeration, this controller is based on ARM966 chipset
    from 2004.
    You can't expect full compatibility with modern devices from a
    hardware that is 20+ years old.

--

 With kindest regards, Alexander.

 Debian - The universal operating system
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