Seagate IronWolf 3.5-Inch Internal NAS Hard Drive
Perfect for home, SOHO and small business NAS

Features:

Be Tough. Be Ready.

For everything NAS, there’s IronWolf and IronWolf Pro-always on, always working.

Built for multi-user environments and high workload rates, these NAS hard drives are enhanced with AgileArray™ technology for optimal reliability and system scalability.

¹ IronWolf Health features subject to change. Available on 4TB and higher IronWolf drives.
² NAS vendors may vary in compatibility with IronWolf Health Management. Contact your Seagate sales representative for further details.
³ Rescue recovery plan are not available in all countries. Please contact your Seagate sales representative for further details.

Multi-Tier Caching Technology:

How Layering an Application’s Cache Improves Performance

Modern data storage needs go far beyond just computing. From creative professional environments to desktop systems, Seagate provides solutions for almost any application that requires large volumes of storage. As a leader in NAND, hybrid, SMR and conventional magnetic recording technologies, Seagate applies different levels of caching and media optimization to benefit performance and capacity. Multi-Tier Caching (MTC) Technology brings the highest performance and areal density to a multitude of applications. Each Seagate product is uniquely tailored to meet the performance requirements of a specific use case with the right memory, NAND, and media type and size. This paper explains how MTC Technology works to optimize hard drive performance.

MTC Technology: Key Advantages

Capacity requirements can vary greatly from business to business. While the fastest performance can be achieved using Dynamic Random Access Memory (DRAM) cache, the data in the DRAM is not persistent through power cycles and DRAM is very expensive compared to other media. NAND flash data survives through power cycles but it is still very expensive compared to a magnetic storage medium. Magnetic storage media cache offers good performance at a very low cost. On the downside, media cache takes away overall disk drive capacity from PMR or SMR main store media.

MTC Technology solves this dilemma by using these diverse media components in combination to offer different levels of performance and capacity at varying price points. By carefully tuning firmware with appropriate cache types and sizes, the end user can experience excellent overall system performance. Since the disk drive on-board controller manages the data flow, the operating system and application work seamlessly in executing read/write operations.

MTC Technology is the performance solution for the best daily end user experience.

Single-Tier vs. Multi-Tier Caching

Traditional disk drives use single-tier cache to speed up data flow from the host to the magnetic media main store-also known as permanent storage. In this scheme, shown in Figure 2, DRAM serves many purposes. A small DRAM buffers randomly written data and reorders them before writing to the main store. Reducing the number of seeks during a write improves random write performance significantly. During sequential write operations, such as streaming, DRAM helps to minimize fragmented writes by merging writes to disk. DRAM also serves as a read look-ahead cache, which can help certain random read operations. However, due to the limited size of the DRAM, the benefit of the read look-ahead cache is limited.

Figure 2. Traditional HDD Caching Data Flow

MTC technology adds various caching layers to further improve both read and write performances. Depending on Seagate’s implementation, some or all of the caching tiers can be utilized for a specific product. In data shown in Figure 3, NAND flash and Media cache layers are added to provide additional performance boost. In this example, NAND flash is used to store most-often-read data to increase read performance while media cache is used to merge small block writes. Since the NAND flash size is in the order of gigabytes compared to the hundreds of megabytes found on DRAM, cache hit is higher by order of 100 times. For fragmented write operations, media cache boosts performance as DRAM reaches its limit. Media cache can sustain a near-sequential data rate of up to scores of gigabytes to better handle burst workloads. All user data are protected and moved in and out of the main store storage without host intervention, making the MTC Technology completely transparent to the user.

Figure 3. MTC Technology HDD Caching Data Flow

MTC Technology: Understanding the Layers of Performance and Capacity

As each layer of caching has an associated cost per storage unit, it is important to understand the performance metric of each component as well as the practical capacity provided by each component. Figure 4 shows the approximate buffering/storage capacity, performance metric as well as unique performance characteristics of each component. Combination of these components and firmware implementation are used to optimize the performance and capacity requirements for a given application.

Figure 4. Capacity + Performance + Unique Characteristics + Firmware = High-Functioning Storage

Terms and Definitions

• MTC Technology (Multi-Tier Caching Technology) - Seagate’s trademarked caching scheme which utilizes multiple memory schemes and firmware to optimize data flow to enhance both read and write performance.
• PMR - Perpendicular magnetic recording
• SMR - Shingled magnetic recording
• MC (Media Cache) - A temporary non-user addressable storage on magnetic media used to buffer incoming or outgoing data.
• MS (Main Store) - A permanent user addressable storage on magnetic storage. Data can be either storage on PMR or SMR media.
• DRAM (Dynamic Random Access Memory) - Volatile memory used to temporarily store data for computing purpose.
• NAND Flash - Non-volatile solid state memory used to store bulk data.

MTC Technology Media Cache & Main Store Usage Cases

The usage of media cache and main store based on each application is illustrated in Table 1. Each application has typical data storage usage noted by file size and its inherent workload characteristics by sequential write, sequential read, random write and random read. These file sizes and workload characteristics drive cache size and type requirements. For example, compute environment deals with small files that are written and read randomly on the HDD. This workload is characterized by high likelihood of random write and random read. Media cache and other caching usages can be high, while the main store data storage requirement is fairly low. By contrast, single-drive surveillance applications deal with large files that are highly sequential read and write. This workload doesn’t require much media cache to boost performance. It does, however, require lots of main store data storage capacity.

Conclusion

Seagate is committed to delivering storage solutions with the highest performance and capacity available. Unique to the Seagate brand, MTC Technology breaks barriers by leveraging media cache, NAND and DRAM in a variety of hard drives for high-performance workloads. BarraCuda Pro, the essential HDD for creative professionals and high-performance desktops, is an excellent example of a drive that hits a high sequential data rate thanks to MTC Technology. Due to the adaptability and affordability of a MTC Technology approach, individuals and small and medium businesses alike can hone in on the full capabilities of their storage drive-ultimately leading to faster and more efficient workflows.

IronWolf Health:

Keep Your Data In Good Shape

For all around well-being, you need prevention, intervention, and recovery.

IronWolf Health Management provides all these aspects of care for supported IronWolf and IronWolf Pro hard drives. Thanks to IHM, which operates in popular NAS operating systems, you can prevent external disturbances from affecting the NAS or drive health, proactively intervene and backup your data when the system notifies, and available industry leading rescue and recovery services should a catastrophic event occur.

Actively Protecting Your NAS

IronWolf Health Management (IHM) is designed to operate on enabled NAS systems, populated with supported Ironwolf SSD, Ironwolf HDDs, and Ironwolf Pro HDDs. IHM helps to improve the overall system reliability by showing prevention, intervention, and recovery options.

Schedule. Review. Track.¹

IHM is integrated within the NAS OS in which it allows you to schedule and review each result of the scan when you want to. The NAS OS will keep a log in which it will help track any trends and keep you well aware of how healthy your drive is based on the results of IHM.

Keep an Eye on Your Workload²

IronWolf Health Management allows you to keep an eye on your workload on compatible NAS. With workload charting you are able to see the data traffic with your NAS on a day by day basis, allowing further piece of mind knowing that IronWolf and IronWolf Pro is built tough to handle 24x7 always on use.

Error Codes and Suggestions

IronWolf Health provides a list of error codes and a suggestion on what you need to do to fix the issues. The chart below helps provides suggestions for each code.

Output Code	Test Result	Suggested Actions to Fix the Issue
100	Notification	Abnormally high operating temperature has been detected. Please ensure rear ventilation ports are not blocked, and try to lower the ambient temperature.
101	Notification	Connection issue on your NAS and hard drive interface has been detected. Please make sure the hard drive is properly installed in the chassis or drive tray, and that the tray is properly installed in your NAS. If issue persists, please contact the NAS Support Team.
102	Notification	Excessive physical shock to the hard drive has been detected. Please ensure your hard drive and NAS are placed on a stable surface. If issue persists, please contact the NAS Support Team.
105	Notification	Excessive vibration has been detected. Please ensure your NAS is placed on a stable surface. If issue persists, please contact the NAS Support Team.
106	Notification	Excessive host resets have been detected. Please ensure the hard drive is properly installed in the chassis or drive tray, and perform a power cycle. If issue persists, please contact the NAS Support Team.
>=200	Warning	IHM has spotted some errors and a full SMART scan has been automatically triggered for your convenience. If the scan fails, please contact Seagate Customer Care.

¹ IronWolf Health Management features may vary from one NAS vendor to another. For further information, please refer to the vendor IHM manual
² Workload charting is only available on compatible NAS. Please check NAS vendor for further details.

Specifications:

Specifications	16TB	14TB	12TB	10TB	8TB
Standard Model Number	ST16000VN001	ST14000VN0008	ST12000VN0008	ST10000VN0008	ST8000VN0022 ST8000VN004
Interface	SATA 6Gb/s	SATA 6Gb/s	SATA 6Gb/s	SATA 6Gb/s	SATA 6Gb/s
Features and Performance
Drive Bays Supported	1-8 Bays	1-8 Bays	1-8 Bays	1-8 Bays	1-8 Bays
Multi-User Technology	180TB/year	180TB/year	180TB/year	180TB/year	180TB/year
Rotational Vibration (RV) Sensor	Yes	Yes	Yes	Yes	Yes
Dual-Plane Balance	Yes	Yes	Yes	Yes	Yes
Error Recovery Control	Yes	Yes	Yes	Yes	Yes
Max. Sustained Transfer Rate OD (MB/s)	210MB/s	210MB/s	210MB/s	210MB/s	210MB/s
Spindle Speed (RPM)	7200	7200	7200	7200	7200
Cache (MB)	256	256	256	256	256
Reliability
Load/Unload Cycles1	600,000	600,000	600,000	600,000	600,000
Nonrecoverable Read Errors Rate, Max	1 per 10E15	1 per 10E15	1 per 10E15	1 per 10E15	1 per 10E15
Power-On Hours	8760	8760	8760	8760	8760
Workload Rate Limit (WRL)	180	180	180	180	180
Mean Time Between Failures (MTBF, hours)	1,000,000	1,000,000	1,000,000	1,000,000	1,000,000
Limited Warranty (years)	3	3	3	3	3
Power Management
Startup Current, Typical (12V, A)	1.8	1.8	1.8	1.8	1.8
Average Operating Power (W)	7.3W	7.3W	7.3W	7.3W	8.8W
Idle Average (W)	5.3W	5.3W	5.0W	5.0W	7.6W
Standby Mode/Sleep Mode, Typical (W)	0.8/0.8	0.8/0.8	0.8/0.8	0.8/0.8	0.6/0.6
Voltage Tolerance, Inc. Noise (5V)	±5%	±5%	±5%	±5%	±5%
Voltage Tolerance, Inc. Noise (12V)	±10%	±10%	±10%	±10%	±10%
Environmental/Temperature
Operating (ambient, min °C)	5°C	5°C	5°C	5°C	5°C
Operating (drive case, max °C)2	70°C	70°C	70°C	70°C	70°C
Nonoperating (ambient, min °C)	-40°C	-40°C	-40°C	-40°C	-40°C
Nonoperating (ambient, max °C)	70°C	70°C	70°C	70°C	70°C
Halogen Free	Yes	Yes	Yes	Yes	Yes
Environmental/Shock
Shock, Operating/Nonoperating: 2ms (max)	50Gs/200Gs	50Gs/200Gs	70Gs/250Gs	70Gs/250Gs	70Gs/250Gs
Environmental/Acoustics
Idle (typical)3	2.8bels	2.8bels	1.8bels	1.8bels	2.8bels (ST8000VN004) 2.7bels (ST8000VN0022)
Seek (typical)	3.0bels	3.0bels	2.8bels	2.8bels	3.2bels (ST8000VN004) 2.8bels (ST8000VN0022)
Physical
Height (mm/in)	26.11mm/1.028in	26.11mm/1.028in	26.11mm/1.028in	26.11mm/1.028in	26.11mm/1.028in
Width (mm/in, max)	101.85mm/4.01in	101.85mm/4.01in	101.85mm/4.01in	101.85mm/4.01in	101.85mm/4.01in
Depth (mm/in, max)	146.99mm/5.787in	146.99mm/5.787in	146.99mm/5.787in	146.99mm/5.787in	146.99mm/5.787in
Weight (g/lb, typical)	670g/1.477lb	670g/1.477lb	690g/1.521lb	690g/1.521lb	722g/1.59lb
Carton Unit Quantity	20	20	20	20	20
Cartons per Pallet/Cartons per Layer	40 / 8	40 / 8	40 / 8	40 / 8	40 / 8
Specifications	6TB	4TB	3TB	2TB	1TB
Standard Model Number	ST6000VN0033	ST4000VN008	ST3000VN007	ST2000VN004	ST1000VN002
Interface	SATA 6Gb/s	SATA 6Gb/s	SATA 6Gb/s	SATA 6Gb/s	SATA 6Gb/s
Features and Performance
Drive Bays Supported	1-8 Bays	1-8 Bays	1-8 Bays	1-8 Bays	1-8 Bays
Multi-User Technology	180TB/year	180TB/year	180TB/year	180TB/year	180TB/year
Rotational Vibration (RV) Sensor	Yes	Yes	No	No	No
Dual-Plane Balance	Yes	Yes	Yes	Yes	Yes
Error Recovery Control	Yes	Yes	Yes	Yes	Yes
Max. Sustained Transfer Rate OD (MB/s)	210MB/s	180MB/s	180MB/s	180MB/s	210MB/s
Spindle Speed (RPM)	7200	5900	5900	5900	5900
Cache (MB)	256	64	64	64	64
Reliability
Load/Unload Cycles1	600,000	600,000	600,000	600,000	-
Nonrecoverable Read Errors Rate, Max	1 per 10E15	1 per 10E14	1 per 10E14	1 per 10E14	1 per 10E14
Power-On Hours	8760	8760	8760	8760	8760
Workload Rate Limit (WRL)	180	180	180	180	180
Mean Time Between Failures (MTBF, hours)	1,000,000	1,000,000	1,000,000	1,000,000	1,000,000
Limited Warranty (years)	3	3	3	3	3
Power Management
Startup Current, Typical (12V, A)	1.8	1.8	2.0	2.0	1.2
Average Operating Power (W)	8.1W	4.8W	4.8W	4.3W	3.76W
Idle Average (W)	7.2W	3.95W	4.8W	3.56W	2.5W
Standby Mode/Sleep Mode, Typical (W)	0.6/0.6	0.5/0.5	0.5/0.5	0.5/0.5	0.5/0.5
Voltage Tolerance, Inc. Noise (5V)	±5%	±5%	±5%	±5%	±5%
Voltage Tolerance, Inc. Noise (12V)	±10%	±10%	±10%	±10%	±10%
Environmental/Temperature
Operating (ambient, min °C)	5°C	5°C	5°C	5°C	5°C
Operating (drive case, max °C)2	70°C	70°C	70°C	70°C	70°C
Nonoperating (ambient, min °C)	-40°C	-40°C	-40°C	-40°C	-40°C
Nonoperating (ambient, max °C)	70°C	70°C	70°C	70°C	70°C
Halogen Free	Yes	Yes	Yes	Yes	Yes
Environmental/Shock
Shock, Operating/Nonoperating: 2ms (max)	70Gs/250Gs	80Gs/300Gs	80Gs/300Gs	80Gs/300Gs	80Gs/300Gs
Environmental/Acoustics
Idle (typical)3	2.7bels	2.7bels	2.3bels	2.3bels	2.1bels
Seek (typical)	2.8bels	2.8bels	2.5bels	2.5bels	2.3bels
Physical
Height (mm/in)	26.11mm/1.028in	26.11mm/1.028in	26.11mm/1.028in	26.11mm/1.028in	20.20mm/0.795in
Width (mm/in, max)	101.85mm/4.01in	101.85mm/4.01in	101.85mm/4.01in	101.85mm/4.01in	101.85mm/4.01in
Depth (mm/in, max)	146.99mm/5.787in	146.99mm/5.787in	146.99mm/5.787in	146.99mm/5.787in	146.99mm/5.787in
Weight (g/lb, typical)	705g/1.55lb	610g/1.345lb	610g/1.345lb	535g/1.18lb	415g/0.915lb
Carton Unit Quantity	20	20	20	20	25
Cartons per Pallet/Cartons per Layer	40 / 8	40 / 8	40 / 8	40 / 8	40 / 8

¹ Load/unload tested to 600,000 cycles.
² Seagate does not recommend operating at sustained case temperatures above 60°C. Operating at higher temperatures will reduce useful life of the product.
³ Idle measured in Idle 1 state.

Views:

---

---

---

---

14TB - 16TB Hard Drive

Documentation:

Download the Seagate IronWolf 3.5-Inch NAS HDD Datasheet (.PDF)