Lenovo 7XB7A05923 Slim DVD Burner DB65 7XB7A05923

Non-Volatile Memory Express (NVMe) is new PCIe 3.0 high performance SSD technology that provides high I/O throughput and low latency. NVMe interfaces remove SAS/SATA bottlenecks and unleash all of the capabilities of contemporary NAND flash memory. Each NVMe PCI SSD has direct PCIe 3.0 x4 connection, which provides at least 2x more bandwidth and 2x less latency than SATA/SAS-based SSD solutions. NVMe drives are also optimized for heavy multi-threaded workloads by using internal parallelism and many other improvements, such as enlarged I/O queues.

The Lenovo PX04PMB NVMe Performance PCIe SSD have the following features:
2.5-inch drive bay (U.2) form factor
Based on the Toshiba PX04P drives, PX04PMBxxx
19nm MLC NAND (128 Gb/die)
10 drive-write-per-day (DWPD) SSD for write-intensive workloads
Direct PCIe 3.0 x4 connection for each NVMe drive, resulting in up to 4 GBps overall throughput.
Full Power-Loss-Protection and End-to-End Data Protection
Low power consumption (maximum 18.5 W)

Enterprise Mainstream SSDs and Enterprise Performance SSDs have similar read and write IOPS performance, but the key difference between them is their endurance (or lifetime) (that is, how long they can perform write operations because SSDs have a finite number of program/erase (P/E) cycles). Enterprise Performance SSDs have higher endurance compared to Enterprise Mainstream SSDs. SSD write endurance is typically measured by the number of program/erase (P/E) cycles that the drive incurs over its lifetime, listed as the total bytes of written data (TBW) in the device specification.

The TBW value assigned to a solid-state device is the total bytes of written data (based on the number of P/E cycles) that a drive can be guaranteed to complete (% of remaining P/E cycles = % of remaining TBW). Reaching this limit does not cause the drive to immediately fail. It simply denotes the maximum number of writes that can be guaranteed. A solid-state device will not fail upon reaching the specified TBW. At some point based on manufacturing variance margin, after surpassing the TBW value, the drive will reach the end-of-life point, at which the drive will go into a read-only mode.

Even though Enterprise Performance SSDs have high endurance, careful planning must still be done to ensure that the total amount of data expected to be written to the drive over its life will not exceed the stated total bytes written (TBW) property of the drive.

For example, the 1.6TB drive has an endurance of 29,200 TB of total bytes written (TBW). This means that for full operation over five years, write workload must be limited to no more than 16TB GB of writes per day, which is equivalent to 10.0 full drive writes per day (DWPD). For the device to last three years, the drive write workload must be limited to no more than 26,667 GB of writes per day, which is equivalent to 16.7 full drive writes per day.

Features



Component for



Server/workstation


Hot-swap



Yes


Interface



PCI Express 3.0


Maximum read (4KB)



660000 IOPS


Maximum write (4KB)



185000 IOPS


Mean time between failures (MTBF)



2000000 Hour


Memory type



MLC


NVMe



Yes


Read latency



100 �s


Sequential read speed (ATTO)



3100 MB/s


Sequential write speed (ATTO)



2350 MB/s


SSD capacity



800 GB


SSD form factor



2.5"


Write latency



30 �s


Logistics data



Harmonized System (HS) code



84717070


Operational conditions



Maximum non-operating altitude



12192 m


Maximum operating altitude



5486 m


Operating relative humidity (H-H)



5 - 95 %


Operating shock



100 G


Operating temperature (T-T)



0 - 40 �C


Operating vibration



2.17 G


Storage relative humidity (H-H)



5 - 95 %


Storage temperature (T-T)



-40 - 70 �C


Other features



Cooling type



Heatsink


Product colour



Black


Package dimensions



Depth (package,cm)



17.4 cm


Gross Weight (Package, kg)



0.25 kg


Height (package,cm)



6.3 cm


Width (package,cm)



13.3 cm


Power



Power consumption (max)



18.5 Watt


Product dimensions



Net Weight (Product, kg)



0.2 kg


Product Depth



10 cm


Product Height



1.5 cm


Product Width



7 cm


Vendor information



Brand Name


Lenovo


Warranty



1 Year(s)