Compaq Q1587A - StorageWorks DAT 160 Internal Tape Drive Krótka Specyfikacja Strona 10
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Proven Reliability
Proven ReliabilityProven 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.
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).
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.
Automated Head
Automated HeadAutomated Head
Automated Head
Cleaning/Intelligent
Cleaning/IntelligentCleaning/Intelligent
Cleaning/Intelligent
cleaning
cleaningcleaning
cleaning
HP DDS derives 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.
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.
Interfaces
InterfacesInterfaces
Interfaces
HP offers a range of interface options with our DAT Tape Drives in order to meet the varying needs of
our customers. HP DAT drives are available with a choice of: the standard SCSI interface where legacy
SCSI connectivity is required, USB 2.0 interface for universal plug and play connectivity and a SAS
interface option for the very latest in server connectivity.
Native SAS – Serial Attached SCSI
Native SAS – Serial Attached SCSINative SAS – Serial Attached SCSI
Native SAS – Serial Attached SCSI
As its name suggests, SAS delivers a new generation of technology based on a development of the
classic SCSI interface. First introduced in May 2002, the SAS interface leverages the proven SCSI
protocol to deliver new levels of scalability, flexibility, and cost-effectiveness for today's system
connectivity, data transport, and data storage.
HP has introduced DAT 160 with a native SAS interface that allows customers to directly connect and
backup SAS configured servers and take advantage of the latest connectivity trends.
Why SAS?
Why SAS?Why SAS?
Why SAS?
For over 20 years, the parallel bus interface has been the mainstream storage interconnect for most
storage systems. While technologies like parallel SCSI meet most performance requirements of today's
enterprise solutions, continued demands for higher speeds, increasingly robust data integrity, smaller
designs and wider standardization have cast doubt on the ability of parallel technologies to economically
keep pace with increasing CPU processing power and disk drive speeds. SAS is the new evolution of
SCSI technology designed to overcome the limitations of the SCSI architecture and delivers a number of
benefits to enterprise systems:
New levels of performance
–
––
–
SAS is capable of moving data at speeds of up to 3Gigabits per second,
with a clear roadmap to 12Gbs in the future. A SAS connection can support four SAS wide lanes or
potentially 4 x 300MB/s per connection.
QuickSpecs
HP StorageWorks Tape Drives
HP StorageWorks Tape DrivesHP StorageWorks Tape Drives
HP StorageWorks Tape Drives
Product Highlights
DA - 11883 Worldwide — Version 26 — November 12, 2007
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