Does this drive feature CMR or SMR method?

First, you should use CMR on NAS because data can be freely rewritten over an existing track as it has no effect on neighboring tracks, allowing them to handle more random write operations. Second, according to Seagate and other sources, all IronWolf drives, including the ST12000VN0007, utilize CMR for consistent and optimal NAS performance.

doe it still has a seagate warranty?

It looks like it only has a 90 day warranty from Newegg

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Seagate IronWolf NAS 12TB 7200RPM 256MB Cache SATA 6.0Gb/s 3.5-Inch Internal NAS Hard Drive (ST12000VN0007)

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Range of capacities up to 12TB.
Workload rate of 180TB/year.
Optimized for NAS with AgileArray, enables dual-plane balancing and RAID optimization in multi-bay environments.
Actively protect your NAS with IronWolf Health Management.
Rotational Vibration (RV) sensors.
Always-on, always-accessible 24x7 performance.
1M hours MTBF,90 days warranty from Newegg only

🔥Don't forget your OS, we have Windows 11 OEM, Download and USB versions available

Overview

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The Power of Agility for Home, SOHO and SMB NAS Enclosures

IronWolf is designed for everything NAS. Get used to tough, ready and scalable 24×7 performance that can handle multi-drive environments across a wide range of capacities.

Model
Brand	Seagate
Series	IronWolf
Part Number	ST12000VN0007
Packaging	Bare Drive

Performance
Interface	SATA
Capacity	12TB
RPM	7200 RPM
Cache	256MB
Average Latency	4.16ms

Features
Features	Optimized for NAS with AgileArray. AgileArray enables dual-plane balancing and RAID optimization in multi-bay environments, with the most advanced power management possible. Actively protect your NAS with IronWolf Health Management focusing on prevention, intervention and recovery.1 High performance means no lag time or downtime for users during workload traffic for the NAS. Seagate leads the competition with the highest-performing NAS drive portfolio.2 Rotational Vibration (RV) sensors. First in its class of drives to include RV sensors to maintain high performance in multi-drive NAS enclosures.3 Range of capacities up to 12TB. More capacity options means more choices that will fit within the budget. Seagate provides a scalable solution for any NAS use-case scenario. Do more in multi-user environments. IronWolf provides a workload rate of 180TB/year. Multiple users can confidently upload and download data to the NAS server, knowing IronWolf can handle the workload, whether you are a creative professional or a small business. Designed for always-on, always-accessible 24x7 performance. Access data on your NAS any time, remotely or on site. 1M hours MTBF represents an improved total cost of ownership (TCO) over desktop drives with reduced maintenance costs. 1 Contact your Seagate sales representative for further information. 2 Performance may vary depending on user's hardware configuration and operating system. 3 Included on 4, 6, 8, 10 and 12TB models.
Usage	For NAS systems

Dimensions
Form Factor	3.5"
Height (maximum)	26.11mm
Width (maximum)	101.85mm
Length (maximum)	146.99mm

Additional Information
First Listed on Newegg	July 08, 2019

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Limited Warranty period (parts): 90 days
Limited Warranty period (labor): 90 days
Read full details

Return Policies

Return for refund within: 30 days

Return for replacement within: 30 days

This item is covered by Newegg.com's 30-Day Return Policy.
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Seagate IronWolf NAS 12TB 7200RPM 256MB Cache SATA 6.0Gb/s 3.5-Inch Internal NAS Hard Drive (ST12000VN0007)

Refurbished

Learn more about the Detailed Specifications

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info

Item#: 1Z4-002P-01A50

Seagate IronWolf NAS 12TB 7200RPM 256MB Cache SATA 6.0Gb/s 3.5-Inch Internal NAS Hard Drive (ST12000VN0007)

Refurbished

Learn more about the Detailed Specifications

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info