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Memblaze PBlaze7 7940 31 TB

31 TB
Capacity
Bravera
Controller
TLC
Flash
PCIe 5.0 x4
Interface
U.2
Form Factor
Front
SSD Controller
Controller
NAND Die
NAND Die
The Memblaze PBlaze7 7940 is a solid-state drive in the U.2 form factor, launched in August 2024. It is available in capacities ranging from 3.8 TB to 31 TB. This page reports specifications for the 31 TB variant. With the rest of the system, the Memblaze PBlaze7 7940 interfaces using a PCI-Express 5.0 x4 connection. The SSD controller is the MV-SS1333 from Marvell, a DRAM cache chip is available. Memblaze has installed 232-layer TLC NAND flash on the PBlaze7 7940, the flash chips are made by Micron. Thanks to support for the fast PCI-Express 5.0 interface, performance is excellent. The PBlaze7 7940 is rated for sequential read speeds of up to 12,000 MB/s and 9,500 MB/s write; random IO reaches 2650K IOPS for read and 400K for writes.
The SSD's price at launch is unknown. The warranty length is set to five years, which is an excellent warranty period. Memblaze guarantees an endurance rating of 56064 TBW, a high value.

Solid-State-Drive

Capacity: 31 TB (30720 GB)
Variants: 3.8 TB 7.5 TB 15 TB 31 TB
Overprovisioning: 4157.8 GB / 14.5 %
Production: Active
Released: Aug 2024
Part Number: Unknown
Market: Enterprise

Physical

Form Factor: U.2
Interface: PCIe 5.0 x4
Protocol: NVMe 2.0
Power Draw: Unknown (Idle)
Unknown (Avg)
25.0 W (Max)

Controller

Manufacturer: Marvell
Name: MV-SS1333
Architecture: ARM 32-bit Cortex-R8 + Cortex-M7 + Cortex-M3
Core Count: 11-Core
Foundry: TSMC FinFET
Process: 12 nm
Flash Channels: 16 @ 1,600 MT/s
Chip Enables: 8
Controller Features: DRAM (enabled)

NAND Flash

Manufacturer: Micron
Name: B58R FortisMax
Type: TLC
Technology: 232-layer
Speed: 2400 MT/s
Capacity: Unknown
ONFI: 5.0
Topology: Replacement Gate
Die Size: 70 mm²
(14.6 Gbit/mm²)
Planes per Die: 6
Decks per Die: 2
Word Lines: 253 per NAND String
91.7% Vertical Efficiency
Block Erase Time (tBERS): 15 ms
Page Size: 16 KB
Block Size: 2784 Pages
Plane Size: 3402 Blocks

DRAM Cache

Type: DDR4
Capacity: Unknown

Performance

Sequential Read: 12,000 MB/s
Sequential Write: 9,500 MB/s
Random Read: 2,650,000 IOPS
Random Write: 400,000 IOPS
Endurance: 56064 TBW
Warranty: 5 Years
MTBF: 2.0 Million Hours
Drive Writes Per Day (DWPD): 1.0
Write Cache: N/A

Features

TRIM: Yes
SMART: Yes
Power Loss Protection: Yes
Encryption:
  • AES-256
  • TCG Opal
RGB Lighting: No
PS5 Compatible: No

Notes

Controller:

The Bravera SC5 SSD controllers feature 72-bit DDR interface
with the option of using either DDR4 or LPDDR4X and has 10
embedded processor cores: Arm® Cortex®-R8 cores plus
additional Cortex-M7 cores for providing further flexibility. In
addition, a Cortex-M3 processor core with integrated
instruction/data SRAM and crypto engines (AES, SHA, RSA, ECC)
in a secure boundary handles the security (TCG) standards for
all secure drive control and key management.

NAND Die:

Higher Endurance Rating than regular FortisFlash
2-Deck design with 116 word line per deck
Programming Throughput - not confirmed, calculated by estimated tPROG
tPROG - Estimated, not confirmed
Nov 14th, 2024 16:29 EST change timezone

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