Western Digital Purple Pro PR22 handleiding
Handleiding
Je bekijkt pagina 22 van 56
Product Features
- 22 -
3.11 S.M.A.R.T. Command Transport (SCT)
The SCT Command Transport feature set provides a method for a host to send
commands and data to a device and for a device to send data and status to a host
using log pages. Standard ATA commands may be interspersed with SCT commands,
but SCT commands cannot be nested. SCT commands that do not require a
subsequent data transfer operation are not interspersed with any ATA commands or
each other.
The SCT Command Transport feature set provides a method for a host to send
commands and data to a device and for a device to send data and status to a host
using log pages. This capability is used to pass commands through a driver interface
or a bridge where new or unknown commands may be filtered and not passed to the
drive. SCT is also used for issuing commands that require more than 8 parameter
bytes. ATA8-ACS provides detailed information on the usage and capabilities of SCT.
The SCT feature set includes the following commands:
Write Same
Temperature Reporting
3.11.1 Write Same
The Write Same command allows the host to erase the media, or write a pattern
repeatedly across the media, with a minimum of data transfer from the host. The host
can clear the entire media to zeros or a specific pattern by sending this command
with the pattern as a parameter—no data transfer is necessary. Write Same can write
the entire media, or just a portion of the media. The host can monitor the progress of
the Write Same by issuing SCT Status requests. This frees the host system to do other
tasks while the media is being cleared.
3.11.2 Temperature Reporting
The SCT Temperature Reporting (SCT TR) feature allows a host system to access
temperature information in the drive. The S.M.A.R.T. temperature value is reported
within ±3°C of the base casting temperature. This information can been used to
control fans or adjust the usage of various system components to keep the drive
within its normal operating temperature. Applications include Enterprise, Laptop,
Desktop and Consumer Electronics. SCT TR reports the maximum and minimum
sustained operating limits, warning level limits, and drive damage limits. In addition to
reporting the limits, SCT TR returns the current drive temperature (a temperature
history which the host can use to predict heating or cooling trends) and the maximum
temperature achieved during the lifetime of the drive as well as the highest
temperature achieved since the power was applied to the drive. Detailed information
on this capability can be found in ATA8-ACS.
3.12 World Wide Name (WWN)
It has become a critical requirement that hard drives be uniquely identified by
computer systems. This allows a drive to maintain its identity as it is transported from
system to system or placed on a network. IEEE has defined a format for serial numbers
that is widely recognized in the computing industry by adding World Wide Name
(WWN) to ATA/ATAPI-7 in 2002.
The World Wide Name (WWN) defined in ATA/ATAPI-7 is a modification of the IEEE
Extended Unique Identifier 64 bit standard (EUI-64) and is comprised of three major
components: naming authority, organizationally unique identifier (OUI) and serial
number. WD’s OUI is 0014EEH.
Bekijk gratis de handleiding van Western Digital Purple Pro PR22, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Western Digital |
| Model | Purple Pro PR22 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 4319 MB |