* WD20EARS: finally reporting 4KByte sector size!
@ 2011-05-16 3:54 Mark Lord
2011-05-16 18:27 ` Bjørn Mork
2011-05-18 22:43 ` Stan Hoeppner
0 siblings, 2 replies; 5+ messages in thread
From: Mark Lord @ 2011-05-16 3:54 UTC (permalink / raw)
To: IDE/ATA development list
I picked up my third WD 2TB "Green" drive today,
and lo and behold.. the firmware (51.0AB51) actually
reports the real physical sector size (finally!).
TA device, with non-removable media
Model Number: WDC WD20EARS-60MVWB0
Serial Number: WD-WCAZA4297731
Firmware Revision: 51.0AB51
Transport: Serial, SATA 1.0a, SATA II Extensions, SATA Rev 2.5,
SATA Rev 2.6
Standards:
Supported: 8 7 6 5
Likely used: 8
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 268435455
LBA48 user addressable sectors: 3907029168
Logical Sector size: 512 bytes
Physical Sector size: 4096 bytes
Logical Sector-0 offset: 0 bytes
device size with M = 1024*1024: 1907729 MBytes
device size with M = 1000*1000: 2000398 MBytes (2000 GB)
cache/buffer size = unknown
Form Factor: 3.5 inch
Capabilities:
LBA, IORDY(can be disabled)
Standby timer values: spec'd by Standard, with device specific minimum
R/W multiple sector transfer: Max = 16 Current = 0
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* SMART feature set
Security Mode feature set
* Power Management feature set
* Write cache
* Look-ahead
* WRITE_BUFFER command
* READ_BUFFER command
* NOP cmd
* DOWNLOAD_MICROCODE
* 48-bit Address feature set
* Device Configuration Overlay feature set
* Mandatory FLUSH_CACHE
* FLUSH_CACHE_EXT
* SMART error logging
* SMART self-test
* General Purpose Logging feature set
* 64-bit World wide name
* WRITE_UNCORRECTABLE_EXT command
* {READ,WRITE}_DMA_EXT_GPL commands
* Segmented DOWNLOAD_MICROCODE
* Gen1 signaling speed (1.5Gb/s)
* Gen2 signaling speed (3.0Gb/s)
* SMART Command Transport (SCT) feature set
* SCT LBA Segment Access (AC2)
* SCT Error Recovery Control (AC3)
* SCT Features Control (AC4)
* SCT Data Tables (AC5)
unknown 206[12] (vendor specific)
unknown 206[13] (vendor specific)
Security:
Master password revision code = 65534
supported
not enabled
not locked
not frozen
not expired: security count
supported: enhanced erase
384min for SECURITY ERASE UNIT. 384min for ENHANCED SECURITY ERASE UNIT.
Logical Unit WWN Device Identifier: 50014ee2b031c1d4
NAA : 5
IEEE OUI : 0014ee
Unique ID : 2b031c1d4
Integrity word not set (found 0x0000, expected 0x73a5)
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: WD20EARS: finally reporting 4KByte sector size!
2011-05-16 3:54 WD20EARS: finally reporting 4KByte sector size! Mark Lord
@ 2011-05-16 18:27 ` Bjørn Mork
2011-05-18 19:13 ` Mark Lord
2011-05-18 22:43 ` Stan Hoeppner
1 sibling, 1 reply; 5+ messages in thread
From: Bjørn Mork @ 2011-05-16 18:27 UTC (permalink / raw)
To: linux-ide
Mark Lord <kernel@teksavvy.com> writes:
> I picked up my third WD 2TB "Green" drive today,
> and lo and behold.. the firmware (51.0AB51) actually
> reports the real physical sector size (finally!).
>
> TA device, with non-removable media
>
> Model Number: WDC WD20EARS-60MVWB0
>
> Serial Number: WD-WCAZA4297731
>
> Firmware Revision: 51.0AB51
It's not the firmware revision. The '6' in the model number seems to
make the difference.
I've got two drives with exactly the same firmware revision, but with a
WD20EARS-00MVWB0 model mumber and lower serial number (it's still the 3
platter version), and they both report 512 bytes:
/dev/sdi:
ATA device, with non-removable media
Model Number: WDC WD20EARS-00MVWB0
Serial Number: WD-WCAZA3180082
Firmware Revision: 51.0AB51
Transport: Serial, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6
Standards:
Supported: 8 7 6 5
Likely used: 8
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 268435455
LBA48 user addressable sectors: 3907029168
Logical/Physical Sector size: 512 bytes
device size with M = 1024*1024: 1907729 MBytes
device size with M = 1000*1000: 2000398 MBytes (2000 GB)
cache/buffer size = unknown
Capabilities:
LBA, IORDY(can be disabled)
Queue depth: 32
Standby timer values: spec'd by Standard, with device specific minimum
R/W multiple sector transfer: Max = 16 Current = 0
Recommended acoustic management value: 128, current value: 254
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* SMART feature set
Security Mode feature set
* Power Management feature set
* Write cache
* Look-ahead
* Host Protected Area feature set
* WRITE_BUFFER command
* READ_BUFFER command
* NOP cmd
* DOWNLOAD_MICROCODE
Power-Up In Standby feature set
* SET_FEATURES required to spinup after power up
SET_MAX security extension
Automatic Acoustic Management feature set
* 48-bit Address feature set
* Device Configuration Overlay feature set
* Mandatory FLUSH_CACHE
* FLUSH_CACHE_EXT
* SMART error logging
* SMART self-test
* General Purpose Logging feature set
* 64-bit World wide name
* WRITE_UNCORRECTABLE_EXT command
* {READ,WRITE}_DMA_EXT_GPL commands
* Segmented DOWNLOAD_MICROCODE
* Gen1 signaling speed (1.5Gb/s)
* Gen2 signaling speed (3.0Gb/s)
* Native Command Queueing (NCQ)
* Host-initiated interface power management
* Phy event counters
* NCQ priority information
DMA Setup Auto-Activate optimization
* Software settings preservation
* SMART Command Transport (SCT) feature set
* SCT LBA Segment Access (AC2)
* SCT Features Control (AC4)
* SCT Data Tables (AC5)
unknown 206[12] (vendor specific)
unknown 206[13] (vendor specific)
Security:
Master password revision code = 65534
supported
not enabled
not locked
not frozen
not expired: security count
supported: enhanced erase
392min for SECURITY ERASE UNIT. 392min for ENHANCED SECURITY ERASE UNIT.
Logical Unit WWN Device Identifier: 50014ee2055f5ff4
NAA : 5
IEEE OUI : 0014ee
Unique ID : 2055f5ff4
Checksum: correct
/dev/sdj:
ATA device, with non-removable media
Model Number: WDC WD20EARS-00MVWB0
Serial Number: WD-WCAZA3178640
Firmware Revision: 51.0AB51
Transport: Serial, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6
Standards:
Supported: 8 7 6 5
Likely used: 8
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 268435455
LBA48 user addressable sectors: 3907029168
Logical/Physical Sector size: 512 bytes
device size with M = 1024*1024: 1907729 MBytes
device size with M = 1000*1000: 2000398 MBytes (2000 GB)
cache/buffer size = unknown
Capabilities:
LBA, IORDY(can be disabled)
Queue depth: 32
Standby timer values: spec'd by Standard, with device specific minimum
R/W multiple sector transfer: Max = 16 Current = 0
Recommended acoustic management value: 128, current value: 254
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* SMART feature set
Security Mode feature set
* Power Management feature set
* Write cache
* Look-ahead
* Host Protected Area feature set
* WRITE_BUFFER command
* READ_BUFFER command
* NOP cmd
* DOWNLOAD_MICROCODE
Power-Up In Standby feature set
* SET_FEATURES required to spinup after power up
SET_MAX security extension
Automatic Acoustic Management feature set
* 48-bit Address feature set
* Device Configuration Overlay feature set
* Mandatory FLUSH_CACHE
* FLUSH_CACHE_EXT
* SMART error logging
* SMART self-test
* General Purpose Logging feature set
* 64-bit World wide name
* WRITE_UNCORRECTABLE_EXT command
* {READ,WRITE}_DMA_EXT_GPL commands
* Segmented DOWNLOAD_MICROCODE
* Gen1 signaling speed (1.5Gb/s)
* Gen2 signaling speed (3.0Gb/s)
* Native Command Queueing (NCQ)
* Host-initiated interface power management
* Phy event counters
* NCQ priority information
DMA Setup Auto-Activate optimization
* Software settings preservation
* SMART Command Transport (SCT) feature set
* SCT LBA Segment Access (AC2)
* SCT Features Control (AC4)
* SCT Data Tables (AC5)
unknown 206[12] (vendor specific)
unknown 206[13] (vendor specific)
Security:
Master password revision code = 65534
supported
not enabled
not locked
not frozen
not expired: security count
supported: enhanced erase
402min for SECURITY ERASE UNIT. 402min for ENHANCED SECURITY ERASE UNIT.
Logical Unit WWN Device Identifier: 50014ee2055f7f54
NAA : 5
IEEE OUI : 0014ee
Unique ID : 2055f7f54
Checksum: correct
Bjørn
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: WD20EARS: finally reporting 4KByte sector size!
2011-05-16 18:27 ` Bjørn Mork
@ 2011-05-18 19:13 ` Mark Lord
0 siblings, 0 replies; 5+ messages in thread
From: Mark Lord @ 2011-05-18 19:13 UTC (permalink / raw)
To: Bjørn Mork; +Cc: linux-ide
On 11-05-16 02:27 PM, Bjørn Mork wrote:
> Mark Lord <kernel@teksavvy.com> writes:
>
>> I picked up my third WD 2TB "Green" drive today,
>> and lo and behold.. the firmware (51.0AB51) actually
>> reports the real physical sector size (finally!).
>>
>> TA device, with non-removable media
>>
>> Model Number: WDC WD20EARS-60MVWB0
>>
>> Serial Number: WD-WCAZA4297731
>>
>> Firmware Revision: 51.0AB51
>
> It's not the firmware revision. The '6' in the model number seems to
> make the difference.
>
> I've got two drives with exactly the same firmware revision, but with a
> WD20EARS-00MVWB0 model mumber and lower serial number (it's still the 3
> platter version), and they both report 512 bytes:
Same here. I have two drives which report the same "firmware revision",
but one has the -6 in the model number and the other doesn't.
The one with the -6 reports 4096B sectors, the other does not.
I think WD is simply using the wrong field for firmware revisions,
as there are other apparent firmware differences between my two drives,
despite them having the same "firmware revision" numbers.
Gotta love WD.
Cheers
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: WD20EARS: finally reporting 4KByte sector size!
2011-05-16 3:54 WD20EARS: finally reporting 4KByte sector size! Mark Lord
2011-05-16 18:27 ` Bjørn Mork
@ 2011-05-18 22:43 ` Stan Hoeppner
2011-05-18 23:19 ` Mark Lord
1 sibling, 1 reply; 5+ messages in thread
From: Stan Hoeppner @ 2011-05-18 22:43 UTC (permalink / raw)
To: Mark Lord; +Cc: IDE/ATA development list
On 5/15/2011 10:54 PM, Mark Lord wrote:
> I picked up my third WD 2TB "Green" drive today,
> and lo and behold.. the firmware (51.0AB51) actually
> reports the real physical sector size (finally!).
> Logical Sector size: 512 bytes
> Physical Sector size: 4096 bytes
What is the positive significance of this change? What does this
materially change for the better?
--
Stan
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: WD20EARS: finally reporting 4KByte sector size!
2011-05-18 22:43 ` Stan Hoeppner
@ 2011-05-18 23:19 ` Mark Lord
0 siblings, 0 replies; 5+ messages in thread
From: Mark Lord @ 2011-05-18 23:19 UTC (permalink / raw)
To: Stan Hoeppner; +Cc: IDE/ATA development list
On 11-05-18 06:43 PM, Stan Hoeppner wrote:
> On 5/15/2011 10:54 PM, Mark Lord wrote:
>> I picked up my third WD 2TB "Green" drive today,
>> and lo and behold.. the firmware (51.0AB51) actually
>> reports the real physical sector size (finally!).
>
>> Logical Sector size: 512 bytes
>> Physical Sector size: 4096 bytes
>
> What is the positive significance of this change? What does this
> materially change for the better?
Filesystems in the kernel can auto-align themselves for performance,
and I noticed that "fdisk" saw the 4KB sector size and adjusted itself
to put sector-1 at offset 64 instead of offset 63, saving me the trouble.
-ml
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2011-05-18 23:19 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2011-05-16 3:54 WD20EARS: finally reporting 4KByte sector size! Mark Lord
2011-05-16 18:27 ` Bjørn Mork
2011-05-18 19:13 ` Mark Lord
2011-05-18 22:43 ` Stan Hoeppner
2011-05-18 23:19 ` Mark Lord
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