Technical Specifications - Lenovo 7SD7A05779 Product Manual

A solid-state device does not fail upon reaching the specified TBW, but at some point after surpassing the
TBW value (and based on manufacturing variance margins), the drive reaches the end-of-life point, at
which time the drive goes into read-only mode. Because of such behavior, careful planning must be done
to use SSDs in the application environments to ensure that the TBW of the drive is not exceeded before
the required life expectancy.
For example, the 1.0 TB P4500 drive has an endurance of 1,380 TB of total bytes written (TBW). This
means that for full operation over five years, write workload must be limited to no more than 756 GB of
writes per day, which is equivalent to 0.75 full drive writes per day (DWPD). For the device to last three
years, the drive write workload must be limited to no more than 1,260 GB of writes per day, which is
equivalent to 1.3 full drive writes per day.

Technical specifications

The following table present technical specifications for the Intel P4500 drives.
Table 2. Technical specifications
Feature
Form factor
Interface
Capacity
Endurance
(total bytes written)
Endurance (drive writes
per day over 5 years)
Data reliability
MTBF, hours
IOPS read (4 KB blocks)
IOPS write (4 KB blocks)
Sequential read rate
Sequential write rate
Read access latency sequential*
Read access latency random*
Write access latency sequential*
Write access latency random*
Shock, operating
Vibration, max, operating
Average power (Active Read / Active
Write)
* Latency measured using 4 KB transfer size with queue depth = 1 on a sequential workload using
Windows Server 2012 R2 drivers. Power mode set at 25W.
Intel P4500 Entry NVMe PCIe 3.0 x4 SSDs
1.0 TB drive 2.0 TB drive
2.5-inch hot-swap 2.5-inch hot-swap
PCIe 3.0 x4 PCIe 3.0 x4
1.0 TB 2.0 TB
1.38 PB 1.89 PB
0.75 DWPD 0.5 DWPD
17
< 1 in 10 bits read < 1 in 10 bits read
2,000,000 2,000,000
279,500 490,000
30,500 38,000
3.2 GBps 3.2 GBps
0.6 GBps 1.05 GBps
10 µs 10 µs
85 µs 85 µs
13 µs 13 µs
20 µs 20 µs
1,000 G (Max) at 0.5 1,000 G (Max) at 0.5
ms ms
2.17 G (5-700 Hz) 2.17 GRMS (5-700 Hz) 2.17 GRMS (5-700 Hz)
RMS
9.6 / 11 W 9.5 / 13.8 W
4.0 TB drive
2.5-inch hot-swap
PCIe 3.0 x4
4.0 TB
4.84 PB
0.65 DWPD
17 17
< 1 in 10 bits read
2,000,000
645,000
62,500
3.2 GBps
1.8 GBps
10 µs
115 µs
13 µs
20 µs
1,000 G (Max) at 0.5
ms
10.7 / 20.5 W
3