Over Provision
OP is when a certain percentage of an SSD’s free space has been allocated to help maximize the lifetime, endurance, and overall performance of the drive itself. It does so by providing a permanent “swap space” for the drive’s controller to manage all the data traffic and storage for the drive.
Apart from being used to store SoC Controller firmware, optimized GC, and WL, OP is a space designated as Spare Block. After certain usage duration of SSD, these Spare Blocks result in Bad Block. The reserved Block in OP space can be swapped with LBB to alleviate the wear and loss during the NAND Flash life cycle, as well as maintain performance level of the SSD.
Typically, 7% of the SSDs capacity is reserved for OP. For a 3D TLC SSD, non-dense-write-in workload such that of a consumer PC, 7% OP space should be sufficient. Unless quality is of concern which results in more LBB, more OP space is required.
For enterprise applications that demands higher write-in applications and P/E frequency, SSSTC designs for larger OP space. This accommodates the temporary working space for GC while optimizing WL, to reduce NAND Flash P/E frequency, hence prolonging SSD usage.
SATA SSD
40GB / 80GB / 160GB / 256GB / 320GB / 640GB
NAND Flash: 3D pSLC(TLC)
Interface: SATA 3 (6Gb/s)
Sequential Read: UP to 550 MB/s
Sequential Write: UP to 510 MB/s
SATA SSD
120GB / 128GB / 256GB / 480GB / 512GB / 960GB / 1024GB / 2048GB
NAND Flash: 3D TLC NAND Flash
Interface: SATA 3 (6Gb/s)
Sequential Read: UP to 550 MB/s
Sequential Write: UP to 510 MB/s
NVMe™ SSD
80GB / 160GB / 320GB
NAND Flash: 3D pSLC(TLC)
Interface: PCIe® Gen4 x4
Sequential Read: UP to 3700 MB/s
Sequential Write: UP to 2600 MB/s
NVMe™ SSD
40GB / 80GB / 160GB / 320GB / 640GB /1280GB
NAND Flash: 3D TLC NAND Flash
Interface: PCIe® Gen3 x4
Sequential Read: 3,100 MB/s
Sequential Write: 1,500 MB/s
NVMe™ SSD
40GB / 80GB / 160GB / 320GB / 640GB /1280GB
NAND Flash: 3D TLC NAND Flash
Interface: PCIe® Gen3 x4
Sequential Read: 3,100 MB/s
Sequential Write: 1,500 MB/s
NVMe™ SSD
80GB / 160GB / 320GB
NAND Flash: 3D TLC NAND Flash
Interface: PCIe® Gen4 x4
Sequential Read: UP to 3,500 MB/s
Sequential Write: UP to 2,100 MB/s
NVMe™ SSD
128GB / 256GB / 512GB / 1024GB / 2048GB /4096GB
NAND Flash: 3D TLC NAND Flash
Interface: PCIe® Gen3 x4
Sequential Read: 3,100 MB/s
Sequential Write: 1,500 MB/s
NVMe™ SSD
128GB / 256GB / 512GB / 1024GB / 2048GB /4096GB
NAND Flash: 3D TLC NAND Flash
Interface: PCIe® Gen3 x4
Sequential Read: 3,100 MB/s
Sequential Write: 1,500 MB/s
NVMe™ SSD
256GB / 512GB / 1024GB / 2048GB
NAND Flash: 3D TLC NAND Flash
Interface: PCIe® Gen4 x4
Sequential Read: UP to 6,800 MB/s
Sequential Write: UP to 4,800 MB/s
NVMe™ SSD
240GB / 256GB /480GB/ 512GB / 960GB/ 1024GB
NAND Flash: 3D TLC NAND Flash
Interface: PCIe® Gen4 x4
Sequential Read: UP to 3,700 MB/s
Sequential Write: UP to 2,600 MB/s
NVMe™ SSD
256GB / 512GB / 1024GB
NAND Flash: 3D TLC NAND Flash
Interface: PCIe® Gen4 x4
Sequential Read: UP to 3,700 MB/s
Sequential Write: UP to 2,600 MB/s
NVMe™ SSD
128GB / 256GB / 512GB
NAND Flash: 3D TLC NAND Flash
Interface: PCIe® Gen3 x4
Sequential Read: UP to 2,000 MB/s
Sequential Write: UP to 1,100 MB/s
NVMe™ SSD
128GB / 256GB / 512GB/ 1024GB
NAND Flash: 3D TLC NAND Flash
Interface: PCIe® Gen3 x4
Sequential Read: UP to 2,000 MB/s
Sequential Write: UP to 1,100 MB/s
NVMe™ SSD
128GB / 256GB / 512GB
NAND Flash: 3D TLC NAND Flash
Interface: PCIe® Gen3 x4
Sequential Read: UP to 3,700 MB/s
Sequential Write: UP to 2,600 MB/s
SATA SSD
128GB / 256GB / 512GB / 1024GB
NAND Flash: 3D TLC NAND Flash
Interface: SATA 3 (6Gb/s)
Sequential Read: UP to 550 MB/s
Sequential Write: UP to 510 MB/s
NVMe™ SSD
128GB / 256GB / 512GB
NAND Flash: 3D TLC NAND Flash
Interface: PCIe® Gen3 x4
Sequential Read: UP to 2,000 MB/s
Sequential Write: UP to 1,100 MB/s
SATA
128GB / 256GB / 512GB / 1024GB
NAND Flash: 3D TLC NAND Flash
Interface: SATA 3 (6Gb/s)
Sequential Read: UP to 550 MB/s
Sequential Write: UP to 510 MB/s
SATA SSD
240GB / 480GB / 960GB / 1920GB / 3840GB
NAND Flash: 3D TLC NAND Flash
Interface: SATA 3 (6Gb/s)
Sequential Read: UP to 520 MB/s
Sequential Write: UP to 520 MB/s
SATA SSD
240GB / 480GB
NAND Flash: 3D TLC NAND Flash
Interface: SATA 3 (6Gb/s)
Sequential Read: UP to 520 MB/s
Sequential Write: UP to 520 MB/s
SATA SSD
240GB / 480GB / 960GB / 1920GB
NAND Flash: 3D TLC NAND Flash
Interface: SATA 3 (6Gb/s)
Sequential Read: UP to 550 MB/s
Sequential Write: UP to 450 MB/s
SATA SSD
128GB / 256GB / 512GB / 1024GB / 2048GB
NAND Flash: 3D TLC NAND Flash
Interface: SATA 3 (6Gb/s)
Sequential Read: UP to 550 MB/s
Sequential Write: UP to 510 MB/s
SATA SSD
128G / 256GB / 512GB / 1024GB / 2048GB
NAND Flash: 3D TLC NAND Flash
Interface: SATA 3 (6Gb/s)
Sequential Read: UP to 550 MB/s
Sequential Write: UP to 510 MB/s
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