Sourced for enterprise IT teams, the Seagate ST3120026AS (ST3120026AS - Seagate BarraCuda 120GB 7200RPM SATA 8MB Cache SATA 3.5-inch Hard Drive) is a Desktop Hard Drive component appropriate for new-build, expansion, or warranty-replacement procurement. Technical specifications include spindle speed of 7,200 RPM, form factor of 3.5-inch, interface of SATA, cache of 8MB. Appropriate for OS boot tier (Windows Server, RHEL, Ubuntu Server, ESXi), application data tier, database log volumes, and tier-2 capacity in mixed-storage clusters. Pro Disk Network maintains the ST3120026AS in our enterprise inventory and verifies each unit against manufacturer datasheet specifications prior to listing. New stock ships factory-sealed where available; refurbished units are tested under load before dispatch and ship with a 90-day Pro Disk Network functional warranty. Same-day dispatch on in-stock orders placed before 3pm ET; free standard ground shipping on US orders over $150.
The ST3120026AS is a Seagate desktop hard drive component with spindle speed 7,200 RPM, form factor 3.5-inch, interface SATA. Pro Disk Network sells the ST3120026AS for $84.00 with same-day US shipping and a 30-day return guarantee.
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Reviewed by:Pro Disk Network Engineering Team — . Specifications, compatibility, and pricing for the ST3120026AS are shown on this page.
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Same-Day US Shipping — orders before 3pm ET ship today via UPS
30-Day Returns — pre-paid label on DOA and defective items
Quick Answer: Will the ST3120026AS work with my RAID controller?
The ST3120026AS operates with any standard SAS/SATA/NVMe-compatible RAID controller (Dell PERC, HPE Smart Array, LSI/Broadcom MegaRAID, Adaptec, IBM ServeRAID, Lenovo ThinkSystem RAID). Mixing this drive in the same RAID volume with drives of different speed/capacity is supported but never recommended.
How fast does the ST3120026AS ship?
ST3120026AS orders placed before 3 pm ET ship the same business day from US warehouses. Delivery is next business day to most metro ZIPs via FedEx/UPS overnight; ground delivery covers remaining US in 1-4 business days.
The ST3120026AS is deployed by US enterprises, MSPs, government, and education customers across multiple infrastructure scenarios. Below are the most common deployment patterns Pro Disk Network sees in real-world orders.
Veeam Backup Repository — Cost-optimised backup target for Veeam B&R, Rubrik, or Cohesity primary backup tier. RAID 6 over 8–24 drives delivers 100+ TB usable per server.
Splunk Warm/Cold Tier — Appropriate for Splunk warm/cold/frozen indexes where ingest write rates are below 200 MB/s per node. Avoid for hot-tier indexes — use NVMe instead.
File Server / SMB Shares — General-purpose Windows Server / Samba shares for departmental file storage. RAID 5 for capacity, RAID 10 for IOPS-sensitive workloads.
Object Storage (Ceph / MinIO) — JBOD presentation behind Ceph OSDs or MinIO erasure-coded pools. Mix with NVMe metadata drives for production object stores.
What is the ST3120026AS?
The ST3120026AS is a Seagate enterprise-grade hard drive with spindle speed 7,200 RPM and form factor 3.5-inch, manufactured by Seagate. Pro Disk Network ships this part new and certified-refurbished from our US warehouse with same-day dispatch on orders placed before 3 PM ET, backed by a 30-day return guarantee.
Pros & Cons of ST3120026AS
Pros
Same-day US shipping from our US warehouse
Cons
Refurbished tier reseals — original retail box not included
Single-drive purchases ship in static-shield bags, not retail packaging
Lead time on 24+ drive orders may extend 2–4 business days
Frequently Asked Questions about ST3120026AS
Is the ST3120026AS a genuine Seagate part?
Yes. Pro Disk Network sources every ST3120026AS as factory-original Seagate inventory. New units arrive sealed in OEM packaging; refurbished units are pulled from decommissioned Seagate servers, surface-tested, and re-warranted by Pro Disk Network for 90 days.
Will the ST3120026AS work with my RAID controller?
The ST3120026AS operates with any standard SAS/SATA/NVMe-compatible RAID controller (Dell PERC, HPE Smart Array, LSI/Broadcom MegaRAID, Adaptec, IBM ServeRAID, Lenovo ThinkSystem RAID). Mixing this drive in the same RAID volume with drives of different speed/capacity is supported but never recommended.
How fast does the ST3120026AS ship?
ST3120026AS orders placed before 3 pm ET ship the same business day from US warehouses. Delivery is next business day to most metro ZIPs via FedEx/UPS overnight; ground delivery covers remaining US in 1-4 business days.
What is the warranty on the ST3120026AS?
New ST3120026AS units carry the full Seagate manufacturer warranty (typically 1 to 5 years depending on product line). Refurbished and bulk-OEM units include a Pro Disk Network advance-replacement warranty (90 days refurbished). DOA replacement is free within 30 days of receipt.
Do you offer bulk pricing for the ST3120026AS?
Email sales@prodisknetwork.com with the quantity and target ship date for a quote within one business day.
Pro Disk Network Buyer’s Guide: Desktop Hard Drive
How to Pick the Right Drive Capacity for Your Use Case
For VMware vSAN deployments, the ST3120026AS is best deployed in the capacity tier with NVMe cache drives in front. Size the cache layer at 10% of usable capacity for write-intensive workloads and 5% for read-leaning workloads. For Veeam backup repositories, plan around 1.5× the size of your protected estate to allow for incremental forever chains plus synthetic fulls. Splunk warm tier sizing should follow the daily ingest rate × retention days × 1.6 compression overhead.
Drive Health Monitoring: SMART, Workload Rating, and Predictive Failure
For VMware ESXi 8 hosts, enable vSphere's predictive-failure analysis on the ST3120026AS via the host's storage device list. The host queries SMART on a regular cadence and surfaces yellow/red warnings in vCenter before the drive fails outright. On Linux, use smartctl piped to your monitoring system; on Windows Server, Storage Spaces exposes health state directly in Server Manager.