Information Technology – ATA Command Set - 4 (ACS-4)
|Publication Date:||21 September 2018|
The set of AT Attachment standards consists of this standard and the ATA implementation standards described in AT Attachment - 8 ATA/ATAPI Architecture Model (ATA8-AAM). This standard specifies the command set that host systems use to access storage devices. This standard provides a common command set for systems manufacturers, system integrators, software suppliers, and suppliers of intelligent storage devices.
This standard maintains compatibility with the ACS-3 standard, INCITS 522-2014, while providing additional functions.
The following features and commands have been made obsolete in this standard:
a) the AT Attachment with Packet Interface (ATAPI);
b) the READ MULTIPLE command;
c) the READ MULTIPLE EXT command;
d) the SET MULTIPLE MODE command;
e) the SMART EXECUTE OFF-LINE IMMEDIATE command;
f) the SMART READ data command;
g) the SMART DISABLE OPERATIONS command;
h) the SMART ENABLE/DISABLE ATTRIBUTE AUTOSAVE command;
i) the SMART ENABLE OPERATIONS command;
j) the WRITE MULTIPLE command;
k) the WRITE MULTIPLE EXT command;
l) the WRITE MULTIPLE FUA EXT command;
m) the contents of IDENTIFY DEVICE data word 47; and
n) the contents of IDENTIFY DEVICE data word 58 bits 8:0.