MemoRight 2.5" 128GB SATA SLC GT SSD MR25.2-128S User Manual
Product codes
MR25.2-128S
MemoRight NAND Flash-based Solid State Drive
MemoRight Confidential
Page 14
3/6/2009
8 KBytes
45.97
5,884
64KBytes
97.19
1,555
128 KBytes
101.34
811
0.5KBytes
8.42
17,238
4 KBytes
52.09
13,336
8 KBytes
75.35
9,645
64KBytes
104.04
1,665
Consecutive
write(typical)
128 KBytes
104.01
832
0.5KBytes
4.72
9,675
4 KBytes
20.80
5,325
8 KBytes
33.10
4,236
64KBytes
83.73
1,340
Random
read(typical)
128 KBytes
93.40
747
0.5KBytes
0.30
605
4 KBytes
1.33
341
8 KBytes
1.78
228
64KBytes
9.77
156
Random
write(typical)
128 KBytes
17.60
141
3.9 Start/stop
time
Table 9:Start/stop time
Time to ready
Typical(sec)
Max(sec)
Power-on to ready
1
10
Warm-up time
5
10
Standby to ready
0.1
0.1
Power-off to power-on
1
/
Power-off to cache flush
done
0.1
1
The MemoRight’s NSSD have an on-drive backup power system. It saves energy when the power
supply is applied to drive. When power-off occurring, the saved energy will be released to keep the
drive working for a while. The saved energy ensures the data in the cache can be flushed to the
nonvolatile flash media,
supply is applied to drive. When power-off occurring, the saved energy will be released to keep the
drive working for a while. The saved energy ensures the data in the cache can be flushed to the
nonvolatile flash media,
which
prevents the data loss to happen.
It will take about 5 seconds to save enough energy for discharge at lease 1 second. The write cache
will be disabled automatically before the backup power system saved enough energy.
will be disabled automatically before the backup power system saved enough energy.
The cycle number of the backup power system is at lease 300,000 to ensure covering the lifespan of
the drive.
the drive.
3.10 Write endurance
The write endurance is
mostly
depending on the write model since each write to flash will cause an
erase operation of the data block. Consecutive write will be better than random write, and large date
block will be better than small data block.
block will be better than small data block.
Table 10:Write endurance
Request size
TBytes/GBytes
IO/GBytes
2 KBytes
>100
>5×10
10
16 KBytes
>100
>6.3×10
9
Consecutive write
128 KBytes
>100
>7.8×10
8
Random
2 KBytes
>1.6
>8×10
8