Do not buy or repurpose SAS drives for the stock ZimaCube bays expecting them to work like SATA drives. ZimaCube’s current hardware documentation describes the main HDD bays as supporting 3.5-inch and 2.5-inch SATA drives, and IceWhale previously explained that the stock HDD controller does not provide SAS protocol support.
The confusing part is mechanical: a SAS-style connector can physically accept some drives, but connector shape is not the same thing as controller compatibility. If a SAS disk fits yet does not spin up or appear in BIOS, that can be expected behavior on a SATA-only path rather than a ZimaOS formatting problem.
Why Can a SAS Drive Physically Fit but Still Not Work?
SATA and SAS are different storage protocols. Some SAS controllers are backward-compatible with SATA drives, but the reverse is not true: a SATA-only controller cannot communicate with a SAS disk just because the connector lines up.
The community explanation from IceWhale said the SAS-shaped interface was chosen for a more durable connector layout, while the actual HDD controller remained SATA-only.
What ZimaCube Currently Supports in the Main Drive Bays
The current ZimaCube hardware overview lists six HDD bays supporting 3.5-inch and 2.5-inch SATA drives.
That is the specification to follow when buying disks for the stock bays. If a reseller listing or forum comment says “SAS-compatible connector,” read it as a mechanical statement unless the controller specification explicitly says SAS.
Why the Power Disable Theory Usually Does Not Solve This
Some enterprise disks have power-disable behavior on certain pins, and that can explain a drive that does not spin in incompatible backplanes. But even if you solve a power issue, a SATA-only controller still cannot speak SAS.
Therefore, do not spend time taping pins or changing power behavior until you have confirmed that the entire data path is SAS-capable.
Can a PCIe SAS HBA Make SAS Drives Work?
Potentially, yes—but that becomes a custom storage build. A real SAS HBA provides the required protocol, but the SAS drives must be connected to that HBA through a compatible data path. Installing an HBA does not automatically convert the stock ZimaCube backplane into a SAS backplane.
You need three things
- a SAS HBA supported by the operating system;
- compatible SAS cabling or backplane connectivity from that HBA to the drives;
- a safe power path for the drives.
The SAS HBA compatibility guide covers this distinction in more detail.
Can a SAS Drive Be Switched into SATA Mode?
No normal software setting turns a SAS disk into a SATA disk. Some confusion comes from SAS controllers supporting both SAS and SATA drives. That flexibility belongs to the controller; the SAS disk itself is still a SAS device.
What Drives Should You Use Instead?
For the stock ZimaCube bays, choose SATA HDDs or SATA SSDs with the capacity, workload rating, noise level, and power characteristics you need. ZimaCube also provides M.2 NVMe storage for faster workloads according to the current hardware overview.
If you already own valuable enterprise SAS drives, it may be more economical to use them in a dedicated SAS chassis, server, or DAS connected through a proper HBA rather than redesigning the ZimaCube storage path around them.
How to Diagnose a Drive That Should Be SATA but Is Still Missing
If the label confirms the drive is SATA, then move to normal storage troubleshooting: reseat the drive, test another bay, check BIOS detection, inspect power, and verify whether ZimaOS sees the device. A missing SATA disk and an unsupported SAS disk are different problems.
The storage troubleshooting guide is a better next step for a supported SATA drive that is not detected.
FAQ
Does ZimaCube support SAS drives in its stock hot-swap bays?
No. Current ZimaCube hardware documentation lists SATA support for the stock bays, and IceWhale has previously stated that the HDD controller is SATA-only.
Why does the connector look like SAS?
The physical connector layout can resemble or accept SAS-style drive connectors for mechanical reasons. That does not add SAS protocol support to the controller.
Will an LSI SAS HBA make the stock bays work with SAS?
Not automatically. The drives need a real data connection to the HBA, plus compatible cabling/backplane and power.
Can I convert an enterprise SAS disk to SATA?
No. Use a controller that supports SAS or use SATA disks in the ZimaCube stock bays.
