Constellation ES.1 SAS Product Manual, Rev. E 59
[1] Constellation ES.1 drives can format to 512, 520 or 528 bytes per logical block.
[2] Warning. Power loss during flash programming can result in firmware corruption. This usually makes the
drive inoperable.
[3] Reference Mode Sense command 1Ah for mode pages supported.
[4] Y = Yes. Command is supported.
N = No. Command is not supported.
A = Support is available on special request.
[5] There is approximately a 1.5 increase in time to format a SED drive versus a non-SED drive of the same
capacity.
Test Unit Ready 00h Y
Verify (10) 2Fh Y
BYTCHK bit Y
Verify (12) AFh N
Verify (16) AFh Y
Verify (32) 7Fh/000Ah N
Write (6) 0Ah Y
Write (10) 2Ah Y
DPO bit Y
FUA bit Y
Write (12) AAh N
Write (16) 8Ah Y
Write (32) 7Fh/000Bh N
Write and Verify (10) 2Eh Y
DPO bit Y
Write and Verify (12) AEh N
Write and Verify (16) 8Eh Y
Write and Verify (32) 7Fh/000Ch N
Write Buffer (modes 0, 2, supported) 3Bh Y (non-SED drives only)
Write Buffer 3Bh
Firmware Download option (modes 5, 7, Ah and Bh) [3] Y (non-SED drives only)
Firmware Download option (modes 4, 5, 7) Y (SED drives only)
Write Long (10) 3Fh Y
Write Long (16) 9Fh/11h Y
Write Same (10) [5] 41h Y
PBdata N
LBdata N
Write Same (16) [5] 93h Y
Write Same (32) 7Fh/000Dh N
XDRead 52h N
XDWrite 50h N
XPWrite 51h N
Table 8: Supported commands
Command name Command code Supported
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