SATA and SCSI compatibility

Storage expert Chris Poelker discusses SATA/SCSI compatibility issues in this expert advice article.

I have been informed by Dell tech support that SCSI and parallel ATA hard disk drives are not compatible and can...

not be combined on the same bus. Does this also apply for SATA and SCSI? I currently have two SCSI hard disk drives and want to add a SATA card and hard disk. Will I encounter problems?

The folks at Dell are giving you the correct answer. SCSI drives use a different logical and physical interface than parallel ATA, SATA and IDE drives, and cannot be used on the same "bus".

That does not preclude you from adding a SATA controller in your server, and adding your SATA disks to that controller. You should be able to have a number of different types of controllers and disks within a single server, such as internal SCSI boot disks and either an internal or external SATA shelf.

As long as the correct controller type is used with the same drive type, you should be fine. SCSI to SCSI, SATA to SATA, parallel ATA to parallel ATA.

This was first published in January 2006

Dig Deeper on Disk drives



Find more PRO+ content and other member only offers, here.

Have a question for an expert?

Please add a title for your question

Get answers from a TechTarget expert on whatever's puzzling you.

You will be able to add details on the next page.



Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to:



  • Tintri VMstore T5000

    Like all of its VM-aware storage systems, Tintri’s first all-flash array -- the Tintri VMstore T5000 -- allows admins to bypass ...

  • SolidFire SF9605

    The high-capacity SolidFire SF9605 uses SolidFire’s Element OS 8 (Oxygen) to deliver new enterprise features such as synchronous ...

  • HPE 3PAR StoreServ 20850

    HPE 3PAR StoreServ 20850 holds 1,024 solid-state drives (SSDs). Hewlett Packard Enterprise claims it can deliver more than three ...





  • Asigra Cloud Backup Version 13

    Asigra Cloud Backup Version 13 provides an AWS Elastic Block Store Snapshot Manager and the ability to support Docker container ...

  • Veeam Availability Suite v8

    Veeam Availability Suite v8 offers several key backup software components in one package, including Veeam Cloud Connect, Snapshot...

  • Druva inSync 5.5

    Druva inSync 5.5 endpoint backup software stands out with its proactive compliance, cloud app integration, full text search and ...