Timeline for How did it come that SATA HDDs use ATA while SATA CD drives use SCSI as protocol?
Current License: CC BY-SA 4.0
24 events
| when toggle format | what | by | license | comment | |
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| Feb 2, 2023 at 9:03 | comment | added | grawity | @user1532080: Even USB BOT devices most often use SCSI as the protocol (with some exceptions). All of my non-UASP flash drives identify themselves as interface class 08h (Mass Storage), subclass 06h (SCSI), protocol 80h (Bulk-Only). | |
| Feb 2, 2023 at 8:53 | comment | added | grawity | @StefanSkoglund: Not yet SATA, but Wireshark has had USB capture for quite a few years now. (And now that USB4 is literally becoming a packed-switched network, it's even less unusual...) | |
| Feb 2, 2023 at 8:10 | comment | added | user1532080 | I'd presume your USB HDD that "uses SCSI" is UASP ( en.wikipedia.org/wiki/USB_Attached_SCSI ). As others pointed this is just the protocol between the computer and the USB controller, and is meant to be faster than older USB BOT. | |
| Feb 2, 2023 at 0:41 | comment | added | Stefan Skoglund | Wireshark to capture SATA traffic ???? For me wireshark is for network traffic ie in this iSCSI of ATAoverEthernet.... | |
| Feb 2, 2023 at 0:40 | comment | added | Stefan Skoglund | A disk using SCSI command language but the SATA connector and interface, that is known as SAS. | |
| Feb 1, 2023 at 18:00 | answer | added | ineuw | timeline score: 0 | |
| Feb 1, 2023 at 17:51 | answer | added | bta | timeline score: 4 | |
| Jan 31, 2023 at 15:16 | comment | added | grawity | Relevant parts of the specification: 4.3 The PACKET feature set and 7.18 PACKET – A0h. | |
| Jan 31, 2023 at 15:12 | comment | added | zomega | @user1686 Good point. I wanted to capture SATA traffic using Wireshark to verify this. But didn't find a way yet. | |
| Jan 31, 2023 at 13:11 | review | Close votes | |||
| Feb 1, 2023 at 5:14 | |||||
| Jan 31, 2023 at 11:26 | answer | added | jpa | timeline score: 10 | |
| Jan 31, 2023 at 10:26 | comment | added | grawity | @zomega: As far as I know, IDE/SATA CD drives still use ATA at least partially partially – even if it's only to identify the device and to tunnel SCSI commands inside ATA payload, but the SATA cable is still carrying SCSI-in-ATA and not just "raw" SCSI. (That's why "ATAPI" as a concept even exists, because if the CD drives were just purely SCSI, they wouldn't be called ATAPI devices... they would just be called SCSI devices.) | |
| Jan 31, 2023 at 10:09 | comment | added | ScottishTapWater | If it's using SCSI... It's not SATA? | |
| Jan 31, 2023 at 8:58 | history | edited | zomega | CC BY-SA 4.0 | edited title |
| Jan 31, 2023 at 8:21 | comment | added | Stephen Kitt | @zomega Accumulation’s point is that asking “why SATA HDDs and SSDs use ATA and not SCSI” can be considered nonsensical — HDDs using SCSI wouldn’t be “SATA HDDs”. | |
| Jan 31, 2023 at 7:54 | comment | added | Thorbjørn Ravn Andersen | Unix-machines back in the 90'es had SCSI harddrives. | |
| Jan 31, 2023 at 7:45 | comment | added | zomega | @Acccumulation CD drives don't use ATA and they're SATA too. | |
| Jan 31, 2023 at 4:38 | comment | added | Acccumulation | If a hard didn't use ATA, then wouldn't it not be SATA? | |
| Jan 31, 2023 at 3:24 | answer | added | Austin Hemmelgarn | timeline score: 12 | |
| Jan 31, 2023 at 1:16 | history | became hot network question | |||
| Jan 30, 2023 at 22:17 | history | edited | Stephen Kitt | CC BY-SA 4.0 | Link directly to the AA. |
| Jan 30, 2023 at 17:35 | answer | added | Stephen Kitt | timeline score: 41 | |
| Jan 30, 2023 at 17:22 | history | edited | zomega | CC BY-SA 4.0 | added 25 characters in body |
| Jan 30, 2023 at 17:10 | history | asked | zomega | CC BY-SA 4.0 |