Dell server with 3 drives of 12TB each

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PHOLAN

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May 12, 2025
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I have installed the latest version of Proxmox in a dell Dell PowerEdge R740xd Machine with 96GB of RAM
I have disabled the Perc RAID and all drives are in AHCI mode
Proxmox ZFS is only reporting 366.24GB

I have 6 VM's running.
How do I give Proxmox access to the remaining drive space sort can be allocated to the VM's?
I would also like to preserve the VM's, if possible

Thanks!

fdisk -l is displaying the following:
Code: 
root@pve:~# fdisk -l
Disk /dev/sda: 223.57 GiB, 240057409536 bytes, 468862128 sectors
Disk model: SSDSCKKB240G8R
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 617DE48E-74A1-4C97-90D8-9A9B21A89253

Device       Start       End   Sectors   Size Type
/dev/sda1       34      2047      2014  1007K BIOS boot
/dev/sda2     2048   2099199   2097152     1G EFI System
/dev/sda3  2099200 468862094 466762895 222.6G Solaris /usr & Apple ZFS

Partition 1 does not start on physical sector boundary.


Disk /dev/sdb: 223.57 GiB, 240057409536 bytes, 468862128 sectors
Disk model: SSDSCKKB240G8R
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 49FF2FC5-235F-4BC5-835C-96D10D1BF343

Device       Start       End   Sectors   Size Type
/dev/sdb1       34      2047      2014  1007K BIOS boot
/dev/sdb2     2048   2099199   2097152     1G EFI System
/dev/sdb3  2099200 468862094 466762895 222.6G Solaris /usr & Apple ZFS

Partition 1 does not start on physical sector boundary.


Disk /dev/zd0: 64.49 GiB, 69241667584 bytes, 135237632 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 16384 bytes
I/O size (minimum/optimal): 16384 bytes / 16384 bytes


Disk /dev/zd16: 1 MiB, 1048576 bytes, 2048 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 16384 bytes
I/O size (minimum/optimal): 16384 bytes / 16384 bytes


Disk /dev/zd32: 1 MiB, 1048576 bytes, 2048 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 16384 bytes
I/O size (minimum/optimal): 16384 bytes / 16384 bytes


Disk /dev/zd48: 120 GiB, 128849018880 bytes, 251658240 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 16384 bytes
I/O size (minimum/optimal): 16384 bytes / 16384 bytes
Disklabel type: dos
Disk identifier: 0x89480eea

Device      Boot   Start       End   Sectors   Size Id Type
/dev/zd48p1 *       2048   1126399   1124352   549M  7 HPFS/NTFS/exFAT
/dev/zd48p2      1126400 251656191 250529792 119.5G  7 HPFS/NTFS/exFAT


Disk /dev/zd64: 1 MiB, 1048576 bytes, 2048 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 16384 bytes
I/O size (minimum/optimal): 16384 bytes / 16384 bytes


Disk /dev/zd80: 4 MiB, 4194304 bytes, 8192 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 16384 bytes
I/O size (minimum/optimal): 16384 bytes / 16384 bytes


Disk /dev/zd96: 250 GiB, 268435456000 bytes, 524288000 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 16384 bytes
I/O size (minimum/optimal): 16384 bytes / 16384 bytes
Disklabel type: dos
Disk identifier: 0x5e55c0b1

Device      Boot  Start       End   Sectors   Size Id Type
/dev/zd96p1 *      2048    104447    102400    50M  7 HPFS/NTFS/exFAT
/dev/zd96p2      104448 524282583 524178136 249.9G  7 HPFS/NTFS/exFAT


Disk /dev/zd112: 80 GiB, 85899345920 bytes, 167772160 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 16384 bytes
I/O size (minimum/optimal): 16384 bytes / 16384 bytes
Disklabel type: dos
Disk identifier: 0x5e55c0b1

Device       Boot     Start       End   Sectors  Size Id Type
/dev/zd112p1 *         2048    104447    102400   50M  7 HPFS/NTFS/exFAT
/dev/zd112p2         104448 166744791 166640344 79.5G  7 HPFS/NTFS/exFAT
/dev/zd112p3      166746112 167768063   1021952  499M 27 Hidden NTFS WinRE


Disk /dev/zd128: 120.02 GiB, 128869990400 bytes, 251699200 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 16384 bytes
I/O size (minimum/optimal): 16384 bytes / 16384 bytes
Disklabel type: dos
Disk identifier: 0xff840117

Device       Boot     Start       End   Sectors   Size Id Type
/dev/zd128p1 *         2048    104447    102400    50M  7 HPFS/NTFS/exFAT
/dev/zd128p2         104448 250630871 250526424 119.5G  7 HPFS/NTFS/exFAT
/dev/zd128p3      250632192 251654143   1021952   499M 27 Hidden NTFS WinRE


Disk /dev/zd144: 100.02 GiB, 107395153920 bytes, 209756160 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 16384 bytes
I/O size (minimum/optimal): 16384 bytes / 16384 bytes
Disklabel type: dos
Disk identifier: 0x5e55c0b1

Device       Boot     Start       End   Sectors  Size Id Type
/dev/zd144p1 *         2048    104447    102400   50M  7 HPFS/NTFS/exFAT
/dev/zd144p2         104448 187736791 187632344 89.5G  7 HPFS/NTFS/exFAT
/dev/zd144p3      187738112 188760063   1021952  499M 27 Hidden NTFS WinRE
root@pve:~#
 
If the drives are connected to the PERC RAID controller, disabling it will disable the drives. You need to either replace the PERC with its HBA version, in some cases you may be able to flash the firmware into HBA or IT mode. In other cases you may have to simply pass through the disks through the RAID controller.
 
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Reactions: Johannes S and UdoB
Thank you.

You pointed me in the right direction.
The machined did have 2x240GB SSD drives, which I wasn't aware of.
The 3 12TB drives were not visible to ProxMox because of the BIOS configuration.

Problem is now solved.
 
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