Seagate ST1000NM0033 manual Mode Sense data

Page 59

11.3.2Mode Sense data

The Mode Sense command provides a way for the drive to report its operating parameters to the initiator. The drive maintains four sets of mode parameters:

1.Default values

Default values are hard-coded in the drive firmware stored in flash E-PROM (nonvolatile memory) on the drive’s PCB. These default values can be changed only by downloading a complete set of new firmware into the flash E-PROM. An initiator can request and receive from the drive a list of default values and use those in a Mode Select command to set up new current and saved values, where the values are changeable.

2.Saved values

Saved values are stored on the drive’s media using a Mode Select command. Only parameter values that are allowed to be changed can be changed by this method. Parameters in the saved values list that are not changeable by the Mode Select command get their values from default values storage.

When power is applied to the drive, it takes saved values from the media and stores them as current values in volatile memory. It is not possible to change the current values (or the saved values) with a Mode Select command before the drive achieves operating speed and is “ready.” An attempt to do so results in a “Check Condition” status.

On drives requiring unique saved values, the required unique saved values are stored into the saved values storage location on the media prior to shipping the drive. Some drives may have unique firmware with unique default values also.

On standard OEM drives, the saved values are taken from the default values list and stored into the saved values storage location on the media prior to shipping.

3.Current values

Current values are volatile values being used by the drive to control its operation. A Mode Select command can be used to change the values identified as changeable values. Originally, current values are installed from saved or default values after a power on reset, hard reset, or Bus Device Reset message.

4.Changeable values

Changeable values form a bit mask, stored in nonvolatile memory, that dictates which of the current values and saved values can be changed by a Mode Select command. A one (1) indicates the value can be changed. A zero (0) indicates the value is not changeable. For example, in Table 11, refer to Mode page 81, in the row entitled “CHG.” These are hex numbers representing the changeable val- ues for Mode page 81. Note in columns 5 and 6 (bytes 04 and 05), there is 00h which indicates that in bytes 04 and 05 none of the bits are changeable. Note also that bytes 06, 07, 09, 10, and 11 are not changeable, because those fields are all zeros. In byte 02, hex value FF equates to the binary pattern 11111111. If there is a zero in any bit position in the field, it means that bit is not changeable. Since all of the bits in byte 02 are ones, all of these bits are changeable.

The changeable values list can only be changed by downloading new firmware into the flash E-PROM.

Because there are often several different versions of drive control firmware in the total population of drives in

NOTE

the field, the Mode Sense values given in the following tables may not exactly match those of some drives.

 

The following tables list the values of the data bytes returned by the drive in response to the Mode Sense command pages for SCSI implementation (see the SAS Interface Manual).

DEF = Default value. Standard OEM drives are shipped configured this way.

CHG = Changeable bits; indicates if default value is changeable.

CONSTELLATION ES.3 SAS PRODUCT MANUAL, REV. B

54

Page 58 Page 60
Image 59
Page 58 Page 60
Contents Constellation ES.3 SAS Document Revision History Contents Installation Contents Seagate Technology Support Services SED ScopeStandards Applicable Standards and Reference DocumentationEuropean Union Restriction of Hazardous Substances RoHS Australian C-TickKorean KCC Taiwanese BsmiReference Documents China Restriction of Hazardous Substances RoHS DirectiveGeneral Description Performance Standard FeaturesMedia Description Programmable Drive Capacity FACTORY-INSTALLED OptionsReliability Formatted CapacitiesGeneral performance characteristics Performance CharacteristicsInternal Drive Characteristics Format command execution time for 512-byte sectors minutesCache Operation START/STOP TimePREFETCH/MULTI-SEGMENTED Cache Control Prefetch operation Caching write dataReliability and Service Reliability SpecificationsError Rates 3 S.M.A.R.T Hot plugging the driveDetermining rate Controlling S.M.A.R.TPerformance impact Reporting controlImplementation State of the drive prior to testingDrive Self Test DST DST failure definitionExtended test Function Code 010b Invoking DSTShort and extended tests Short test Function Code 001bProduct repair and return information Product warrantyShipping StoragePowerChoice modes PHYSICAL/ELECTRICAL SpecificationsPowerchoicetm Power Management DC Power Requirements AC Power Requirements4TB drive DC power requirements 3TB drive DC power requirements 2TB drive DC power requirements 1TB drive DC power requirements Conducted noise immunity General DC power requirement notesPower sequencing TB model current profiles Current profilesTB model current profiles TB model current profiles TB model current profiles 4TB models in 6Gb operation Power Dissipation4TB models in 3Gb operation 3TB models in 6Gb operation 3TB models in 3Gb operation2TB models in 6Gb operation 2TB models in 3Gb operation1TB models in 6Gb operation 1TB models in 3Gb operationRelative humidity Temperature a. OperatingEnvironmental Limits Image is for reference only, may not represent actual driveShock Shock and vibrationRecommended mounting Corrosive environment Air cleanlinessVibration Acoustics1TB Mechanical SpecificationsSecurity Level PurposeValidation Program Seagate Enterprise SEDRandom Number Generator RNG Controlled AccessAbout SELF-ENCRYPTING Drives Data EncryptionData Bands Authenticated Firmware DownloadPower Requirements Supported CommandsDrive Error Recovery Procedures Defect and Error ManagementDrive Internal DEFECTS/ERRORS Background Media Scan SAS System ErrorsProtection Information PI Media PRE-SCANDeferred AUTO-REALLOCATION Idle Read After WriteIdentifying a Protection Information drive Setting and determining the current Type LevelCooling InstallationDrive Orientation X = F 15lb = 67N Drive MountingGrounding Task management responses SAS FeaturesInterface Requirements Task management functionsScsi Commands Supported Supported commands Supported commands Supported commands Constellation ES.3 inquiry data Inquiry dataMode Sense data Block Descriptor CHG 9C 0A 9D 0F FF FF FF FF FF FF FF FF DEF 12 1400 FF FF 00 00 FF FF FF FF 80 20 00 00 00 00 00 Miscellaneous features Miscellaneous Operating Features and ConditionsSAS physical interface Datum B Section C C Section a a Pin descriptions Physical characteristicsConnector requirements Electrical descriptionReady LED Out PowerSignal Characteristics SAS transmitters and receiversAdditional Information Differential signalsSAS-2 Specification Compliance Index Page KCC See also cooling Page Seagate Technology LLC
Related manuals
Manual 52 pages 18.94 Kb

ST1000NM0033 specifications

The Seagate ST1000NM0033 is a high-performance hard disk drive (HDD) designed specifically for enterprise applications. With a storage capacity of 1TB, it offers a balance of performance, reliability, and efficiency, making it suitable for data centers, cloud storage, and server environments. Built with Seagate's robust engineering, the ST1000NM0033 is ideal for handling heavy workloads and intensive data processes.

One of the standout features of this HDD is its rotational speed of 7200 RPM. This speed allows for quick data access and fast read/write operations, which is essential for data-intensive applications. The drive is equipped with 64MB of cache, further enhancing its efficiency by speeding up data retrieval for frequently accessed files.

Another key characteristic of the ST1000NM0033 is its SATA interface, which typically facilitates high-bandwidth data transfer rates. With a sustained data transfer rate of up to 160 MB/s, it ensures that large files, such as videos and databases, can be transferred swiftly, minimizing downtime and improving overall system performance.

The drive's durability is backed by Seagate’s Advanced Format technology, which enhances the format compatibility, storage efficiency, and reliability of the drive through improved error correction. With a mean time between failures (MTBF) rating of 1 million hours, users can trust the STA0033 to provide exceptional longevity and stability, critical in enterprise environments where data integrity is paramount.

Furthermore, the ST1000NM0033 supports various workload types due to its design optimized for multi-user environments. The drive can handle up to 180TB/year workload rate, making it capable of supporting applications with high data demand.

Environmentally, Seagate ensures that this model is energy efficient, contributing to reduced power consumption in enterprise settings. The drive operates effectively within a specified temperature range, ensuring that it remains operational under different environmental conditions.

In summary, the Seagate ST1000NM0033 is an excellent choice for businesses seeking a reliable, high-capacity HDD with robust performance features. Its combination of speed, efficiency, durability, and capacity positions it as a strong contender in the enterprise storage solutions market. With its extensive feature set, it continues to cater to the demanding needs of modern data centers and enterprise applications.
Top Page Image Contents