Seagate ST240FP0001 ユーザーズマニュアル
S
EAGATE
600 P
RO
SSD P
RODUCT
M
ANUAL
, R
EV
. A
6
When evaluating performance of SSD devices, it is recommended to measure performance of the device in a method that
resembles the targeted application using real world data and workloads. Test time should also be adequately large to ensure
that sustainable metrics and measures are obtained.
resembles the targeted application using real world data and workloads. Test time should also be adequately large to ensure
that sustainable metrics and measures are obtained.
2.5
P
HYSICAL CHARACTERISTICS
2.5” models
Maximum height
7.00 mm (0.276 in)
Maximum width
70.10 mm (2.760 in)
Maximum length
100.45 mm (3.955 in)
Max weight
100 g (0.220 lb)
2.6
A
CCESS TIME
Access measurements are taken with nominal power at 25°C ambient temperature. All times are measured using drive
diagnostics. The specifications in the table below are defined as follows:
• Page-to-page access time is an average of all possible page-to-page accesses in both directions for a sequentially precon-
diagnostics. The specifications in the table below are defined as follows:
• Page-to-page access time is an average of all possible page-to-page accesses in both directions for a sequentially precon-
ditioned drive.
• Average access time is a true statistical random average of at least 5000 measurements of accesses between program-
mable pages, less overhead, on a randomly preconditioned drive.
*T
YPICAL ACCESS TIMES
(μs)
R
EAD
W
RITE
Average
158
125
Note. These drives are designed to provide the highest possible performance under typical conditions. However, due to
the nature of Flash memory technologies there are many factors that can result in values different than those
stated in this specification.
stated in this specification.
2.7
T
IME TO
R
EADY
480GB
400GB
240GB
200GB
120GB
100GB
Power-on to Ready for non-Media related Commands (sec)
3 (typ)
Power-on to Ready for Media related commands (sec)
14 (max)
Standby to Ready (sec)
3 (max)
Ready to power removal (sec)
3 (max)
Power-on to Ready for non-media related commands is defined as the time that it will take the drive to respond from the
application power until it is ready to accept commands from the host that do not require access to the flash media. In some
cases the drive may accept media access commands during this time, but the commands will not be completed or status
returned to the host until the media can be accessed safely. Commands such as Check Power and Identify are examples of
non-media related commands.
application power until it is ready to accept commands from the host that do not require access to the flash media. In some
cases the drive may accept media access commands during this time, but the commands will not be completed or status
returned to the host until the media can be accessed safely. Commands such as Check Power and Identify are examples of
non-media related commands.
Power-on to Ready for media related commands is defined as the time that it will take the drive to respond from the
application power until it is ready to accept commands from the host that require access to the flash media. Commands
such as FPDMA Read Extended and FPDMA Write Extended are examples of media related commands. This value includes
the time needed to charge the Power Loss Data Protection Circuit to a level that is adequate to protect customer data from
unexpected power loss.
application power until it is ready to accept commands from the host that require access to the flash media. Commands
such as FPDMA Read Extended and FPDMA Write Extended are examples of media related commands. This value includes
the time needed to charge the Power Loss Data Protection Circuit to a level that is adequate to protect customer data from
unexpected power loss.
The maximum time for Power-on to Ready is dependent on if a STANDBY IMMEDIATE was issued prior to power down and
the write workload profile prior to power down.
the write workload profile prior to power down.