HP StorageWorks DAT 160 SCSI Internal Tape Drive/Top Value AG907AT 用户手册
产品代码
AG907AT
Proven Reliability
Proven Reliability
Proven Reliability
Proven Reliability
HP DAT drives have proven to be exceptionally reliable. The drives have demonstrated exceptional
performance with customers over many years and across different generations and this has under pinned
their popularity.
performance with customers over many years and across different generations and this has under pinned
their popularity.
The drives are designed with reliability in mind and with the security of customer's data as a priority.
Hardware reliability is typically measured as MTBF (Mean Time Between Failures) associated with duty
cycles which suggests the amount the drive is typically used e.g. 100% duty cycle means the drive is used
for 24 hours per day. As a result of field data, the specification for HP DDS products is stated as
125,000 hours at 100% duty cycle, or 1 million hours at a more typical 12% duty cycle (drive used on
average for 3 hours per day).
Hardware reliability is typically measured as MTBF (Mean Time Between Failures) associated with duty
cycles which suggests the amount the drive is typically used e.g. 100% duty cycle means the drive is used
for 24 hours per day. As a result of field data, the specification for HP DDS products is stated as
125,000 hours at 100% duty cycle, or 1 million hours at a more typical 12% duty cycle (drive used on
average for 3 hours per day).
Unlike other manufactures DAT drives, this specification is not generated in the laboratory with limited
numbers of prototype drives and assumptions on customer use; it is generated from real customer data
for the products concerned.
numbers of prototype drives and assumptions on customer use; it is generated from real customer data
for the products concerned.
Automated Head
Automated Head
Automated Head
Automated Head
Cleaning/Intelligent
Cleaning/Intelligent
Cleaning/Intelligent
Cleaning/Intelligent
Cleaning/Intelligent
cleaning
cleaning
cleaning
cleaning
cleaning
HP DDS drives benefit from an automatic head cleaning "sweeper" that can be used during the write or
read recovery procedure to dislodge debris from the tape path and recording heads and drive. This
feature reduces the need to use a DDS cleaning cartridge for manual cleaning.
read recovery procedure to dislodge debris from the tape path and recording heads and drive. This
feature reduces the need to use a DDS cleaning cartridge for manual cleaning.
Intelligent cleaning determines the cleaning provided by a cleaning cartridge when loaded by monitoring
the drive performance when in use. If the drive is performing well, a routine maintenance clean is
performed. If the drive has degraded performance the cleaning is automatically made more robust to
recover the drive to optimum performance.
the drive performance when in use. If the drive is performing well, a routine maintenance clean is
performed. If the drive has degraded performance the cleaning is automatically made more robust to
recover the drive to optimum performance.
Interfaces
Interfaces
Interfaces
Interfaces
HP DAT drives are currently available with a choice of interfaces: the standard SCSI interface where
legacy SCSI connectivity is required and USB 2.0 interface for universal plug and play connectivity. In the
near future, as SAS interface for the DAT 160 is planned.
legacy SCSI connectivity is required and USB 2.0 interface for universal plug and play connectivity. In the
near future, as SAS interface for the DAT 160 is planned.
The USB (Universal Systems Bus) interface was conceived out of a need to simplify computer peripheral
device connection. It has been so successful that the majority of computer systems and servers shipped
today offer multiple native USB 2.0 ports.
device connection. It has been so successful that the majority of computer systems and servers shipped
today offer multiple native USB 2.0 ports.
HP is the first company to develop a native USB DDS/DAT tape drive. Where other "USB tape drives" rely
on a USB converter, HP's USB interface is fully integrated with the drive and uses the SCSI command set
within the USB payload. The benefit of this implementation is that it gives the drive full SCSI functionality
and the flexibility of USB without the additional cost of a converter.
on a USB converter, HP's USB interface is fully integrated with the drive and uses the SCSI command set
within the USB payload. The benefit of this implementation is that it gives the drive full SCSI functionality
and the flexibility of USB without the additional cost of a converter.
By offering native USB 2.0 DAT drives, HP aims to provide customers with a number of benefits:
Greater usability
Plug-and-play connectivity- the system automatically detects and configures the tape drive.
The DAT drive is installed and ready to backup in less than 60 seconds.
Microsoft fully supports USB devices natively in their operating systems providing robust,
secure configuration and installation wizards.
Cables are easily identifiable, easy to attach without the need for thumb-screw and robust
enough to ensure reliable retention.
The DAT drive is installed and ready to backup in less than 60 seconds.
Microsoft fully supports USB devices natively in their operating systems providing robust,
secure configuration and installation wizards.
Cables are easily identifiable, easy to attach without the need for thumb-screw and robust
enough to ensure reliable retention.
Resource abundance
Native USB ports are universally available in systems and servers
Multiple ports ensure that port resources are widely available, reducing the conflict between
devices over scarce connectors.
Port expansion is easy, USB hubs can be installed to add additional ports supporting up to
127 devices on a system
Multiple ports ensure that port resources are widely available, reducing the conflict between
devices over scarce connectors.
Port expansion is easy, USB hubs can be installed to add additional ports supporting up to
127 devices on a system
Low cost, reliable connectivity
QuickSpecs
HP StorageWorks Tape Drives
HP StorageWorks Tape Drives
HP StorageWorks Tape Drives
HP StorageWorks Tape Drives
Product Highlights
DA - 11883 Worldwide — Version 25 — August 6, 2007
Page 9