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Toshiba Semiconductor and Storage MG04SCA40EA
- Part No.:
- MG04SCA40EA
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- Datasheet:
-
MG04SCA40EA.pdf
- Description:
- TOMCAT-R 4TB
- Quantity:
- Payment:
- Shipping:
Inventory:4,485
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Product details
Overview
MG04SCA40EA from Toshiba is a 4 TB enterprise-class 3.5-inch SAS-3 hard disk drive with 7,200 rpm spindle speed, 128 MiB buffer, and 4Kn native sector format (4,096/4,160/4,224 B logical blocks), designed for 24×7 data center storage systems requiring high capacity per spindle and workload resilience.
For engineers reviewing the MG04SCA40EA datasheet, MG04SCA40EA pinout, MG04SCA40EA application, or MG04SCA40EA equivalent, key selection criteria include SAS-3 dual-port interface compliance, 550 TB/year workload rating, Persistent Write Cache with power-loss protection, 4Kn sector alignment requirements, and RoHS-compliant 3.5-inch mechanical form factor.
Technical Context
This drive implements a dual-port SAS-3.0 interface supporting 12.0 Gbit/s maximum signaling rate with backward compatibility to 6.0/3.0/1.5 Gbit/s. It uses 4Kn (4096-byte native) logical block addressing aligned to physical media, eliminating emulation overhead in modern OS and hypervisor environments.
It integrates Toshiba's Persistent Write Cache (PWC) with Power Loss Protection (PLP) using flash-backed cache retention, ensuring write acknowledgment integrity during sudden power loss. The drive is rated for continuous 24×7 operation with 1,400,000-hour MTTF and 10⁻¹⁶ non-recoverable error rate.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Formatted Capacity | 4 TB (Toshiba decimal definition: 4,000,000,000,000 bytes) |
| Interface | SAS-3.0 dual-port, 12.0 Gbit/s max - enables redundant host connectivity and full bandwidth utilization in enterprise servers |
| Rotation Speed | 7,200 rpm ± 0.1% - balances latency, throughput, and power efficiency for nearline workloads |
| Average Latency | 4.17 ms - determined by rotational speed; critical for random I/O response time |
| Buffer Size | 128 MiB - supports command queuing, write coalescing, and read-ahead caching |
| Sustained Transfer Rate | 205 MiB/s - measured sequential throughput; impacts large-file streaming and backup performance |
| Workload Rating | 550 TB/year - annual data transfer limit defining endurance for enterprise deployment |
| Non-Recoverable Error Rate | 10⁻¹⁶ - error probability per bit read; meets enterprise data integrity requirements |
Pinout & Package
MG04SCA40EA uses a standard 3.5-inch HDD form factor (147 mm × 101.6 mm × 26.1 mm max) with SAS SFF-8482 connector interface. Mechanical dimensions and pinout conform to ANSI INCITS 517–2014 and SAS-3.0 specifications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–4, 7–10, 13–16, 19–22 | SAS Transmit+/− (Port A & B) | Dual-port differential signaling lanes support redundant host attachment and failover |
| 5–6, 11–12, 17–18, 23–24 | SAS Receive+/− (Port A & B) | Independent receive paths enable simultaneous multi-host access without arbitration delay |
| 25–26 | Power (12 V) | Primary motor and actuator supply; requires stable ±5% regulation |
| 27–28 | Power (5 V) | Logic and interface circuitry supply; isolated from 12 V rail for noise immunity |
| 29–32 | Ground | Signal return and chassis reference; multiple pins reduce impedance for EMI control |
| 33–34 | Staggered Spin-Up Control | Enables controlled power ramp-up across drive arrays to limit inrush current |
Key Features
| Feature | Design Value |
|---|---|
| 4Kn Native Sector Format | Eliminates 512e emulation overhead, improves I/O efficiency and reduces misalignment penalties in virtualized/cloud OS stacks |
| Persistent Write Cache with PLP | Uses onboard flash and capacitor-backed power to retain uncommitted writes during unexpected shutdown, preserving data integrity |
| Dual-Port SAS-3 Interface | Provides hardware-level redundancy and load balancing across two independent host controllers without external switch dependency |
| Sanitize Instant Erase (SIE) Option | Enables cryptographic erasure of all user data in seconds-compliant with NIST SP 800-88 Rev. 1 for secure decommissioning |
| RoHS-Compatible Construction | Meets EU Directive 2011/65/EU limits for Pb, Hg, Cd, Cr⁶⁺, PBB, PBDE; no exemptions applied |
Applications
| Enterprise Tier-2 Storage Arrays | Cloud Infrastructure Compute Nodes |
|---|---|
Use Scenario: Deployed in scale-out JBOD enclosures behind SAS expanders in hyperscale object storage clusters. IC Role / Device Role / Timing Role: Primary bulk storage device handling sequential large-object writes and metadata-intensive small-block reads. Use Value: 4 TB density and 550 TB/year rating allow cost-per-TB optimization while sustaining >95% utilization under mixed 70/30 read/write workloads. | Use Scenario: Mounted in 1U/2U rack servers hosting containerized microservices with persistent volume claims. IC Role / Device Role / Timing Role: Local block storage endpoint for Kubernetes PersistentVolumes; leverages 4Kn alignment for efficient overlay filesystem operations. Use Value: Dual-port SAS enables live migration failover; PWC+PLP prevents pod restart data corruption during rack-level power events. |
| Financial Transaction Logging Systems | Media Archive & Backup Targets |
Use Scenario: Used as write-optimized journal drives in high-frequency trading database clusters with synchronous replication. IC Role / Device Role / Timing Role: Low-latency, high-integrity append-only log destination with guaranteed write persistence. Use Value: 4.17 ms average latency and PWC+PLP ensure sub-10ms commit times with zero data loss on AC failure-meeting FINRA audit requirements. | Use Scenario: Integrated into tapeless media ingest pipelines for broadcast-grade video archives with 10+ year retention SLAs. IC Role / Device Role / Timing Role: High-capacity, long-life cold storage tier with deterministic error recovery and SIE-enabled media lifecycle management. Use Value: 10⁻¹⁶ NRE rate and 1.4M-hour MTTF provide >99.999% annual availability; SIE allows rapid re-purposing between production and archive roles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar enterprise SAS HDD applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Seagate EXOS X16 4TB (ST4000NM0035) | 512e sector format (not 4Kn); 256 MiB buffer; 7,200 rpm; SAS-3 dual-port | Requires OS-level 512e emulation layer; higher write amplification in VM environments | Select when legacy OS or application stack lacks native 4Kn support |
| Western Digital Ultrastar DC HC550 4TB (WUH724040ALE6L4) | CMR technology; 256 MiB buffer; 7,200 rpm; SAS-3 dual-port; 4Kn native | Higher sustained throughput (255 MiB/s); identical 4Kn and PLP implementation | Select when prioritizing sequential throughput over Toshiba's lower idle power (6.1 W typ.) |
Compared with Seagate EXOS X16 and WD Ultrastar HC550, the MG04SCA40EA offers native 4Kn alignment with industry-low 6.1 W idle power and Toshiba-specific PWC firmware behavior-making it optimal for energy-constrained, cloud-native deployments where sector alignment and power capping are design constraints.
Availability
MG04SCA40EA is available at Aetrix Electronics and suitable for enterprise storage arrays, cloud infrastructure nodes, financial transaction logging systems, and media archive targets requiring stable component supply, long-term lifecycle support, and certified RoHS compliance.
Supply support for MG04SCA40EA includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Toshiba Corporation (now Kioxia Corporation following 2019 spin-off) is a Japanese semiconductor and storage technology pioneer, known for NAND flash innovation and enterprise-class HDD reliability engineering.
The MG04SCAxxEx series was developed specifically for mid-line enterprise storage-balancing 4Kn efficiency, SAS-3 dual-port resilience, and 550 TB/year workload endurance in dense 3.5-inch form factor deployments.
FAQ
What is the native sector size supported by MG04SCA40EA?
The MG04SCA40EA supports 4Kn native sector format with logical block sizes of 4,096, 4,160, or 4,224 bytes-no 512-byte emulation. This eliminates misalignment penalties in modern Linux kernels, VMware vSphere, and Windows Server 2016+, enabling optimal I/O efficiency for virtualized and cloud workloads. The MG04SCA40EA does not support 512e mode.
Does MG04SCA40EA include power-loss protection?
Yes, MG04SCA40EA implements Toshiba Persistent Write Cache (PWC) with Power Loss Protection (PLP), using onboard capacitors and flash memory to retain uncommitted write data during sudden power interruption. This ensures that host-acknowledged writes are preserved and committed to media after recovery. The MG04SCA40EA's PLP behavior is validated per JEDEC JESD218A standards.
What is the maximum annual workload rating for MG04SCA40EA?
The MG04SCA40EA is rated for 550 TB of total data transferred per year-a key endurance metric for enterprise nearline HDDs. This workload rating reflects real-world mixed-read/write patterns under 24×7 operation and directly informs RAID group sizing, rebuild time estimates, and replacement cycle planning. Exceeding this rating may impact long-term reliability.
Is MG04SCA40EA compatible with SAS-2 or SAS-1 host controllers?
Yes, MG04SCA40EA supports backward compatibility with SAS-2 (6.0 Gbit/s) and SAS-1 (3.0 Gbit/s) host controllers via automatic speed negotiation. However, its dual-port SAS-3 interface will operate at reduced bandwidth in legacy mode, and features like enhanced error recovery and expanded command sets may be limited. Full functionality-including 12.0 Gbit/s throughput and advanced PLP reporting-is only available on SAS-3 hosts.
What environmental conditions are specified for MG04SCA40EA operation?
MG04SCA40EA is qualified for continuous operation at 5 °C to 55 °C ambient temperature and 5–90% relative humidity (non-condensing). It withstands operating shock up to 686 m/s² (70 G) and vibration of 7.35 m/s² (0.75 G) across 5–300 Hz. These specs align with ASHRAE TC 90.4 data center environmental guidelines, confirming suitability for standard enterprise server rooms.
MG04SCA40EA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- MG04SCAxxEx
- Packaging:
- Bulk
- Product Status:
- Active
- Memory Size:
- 4TB
- Memory Type:
- Magnetic Disk (HDD)
- Form Factor:
- 3.5"
- Speed - Read:
- -
- Speed - Write:
- -
- Voltage - Supply:
- 5V, 12V
- Type:
- SAS
- Current - Max:
- -
- Operating Temperature:
- 5°C ~ 55°C
- Weight:
- -
- Size / Dimension:
- 147.00mm x 101.60mm x 26.10mm
MG04SCA40EA FAQ
1.How can I place an order for MG04SCA40EA through Aetrix?
Please submit a Request for Quotation (RFQ) for MG04SCA40EA on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MG04SCA40EA reliable?
The price and inventory of MG04SCA40EA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MG04SCA40EA is usually 5 days.
3.What payment methods are accepted for MG04SCA40EA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MG04SCA40EA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MG04SCA40EA?
MG04SCA40EA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MG04SCA40EA order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MG04SCA40EA?
For technical support, including MG04SCA40EA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MG04SCA40EA requirements.
6.How does Aetrix verify that MG04SCA40EA is sourced from the original manufacturer or authorized distributors?
All MG04SCA40EA products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MG04SCA40EA meets industry standards.
7.What is the process for return or replacement of MG04SCA40EA?
All MG04SCA40EA units undergo pre-shipment inspection (PSI). If there is an issue with MG04SCA40EA, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MG04SCA40EA part is unused and in its original packaging.
Return procedure for MG04SCA40EA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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