Seagate part number ST9546AG identifies the ST9546AG - Seagate 540MB 4500RPM IDE/ATA 120KB Cache 2.5-inch Hard Drive, an enterprise-grade Laptop Hard Drive unit appropriate for data-center, server-room, and workstation deployment. Technical specifications include spindle speed of 4,500 RPM, form factor of 2.5-inch, interface of IDE, cache of 120KB. Typical workloads include VMware ESXi datastores, Veeam / Rubrik / Cohesity backup repositories, RDBMS data files (SQL Server, PostgreSQL, Oracle), and log-tier storage for Splunk and Elastic. Pro Disk Network maintains the ST9546AG 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 ST9546AG is a Seagate laptop hard drive component with spindle speed 4,500 RPM, form factor 2.5-inch, interface IDE. Pro Disk Network sells the ST9546AG for $273.91 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 ST9546AG are shown on this page.
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Quick Answer: Will the ST9546AG work with my RAID controller?
The ST9546AG 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 ST9546AG ship?
Pro Disk Network dispatches the ST9546AG same-day on orders confirmed before 3 pm ET. Multi-pallet projects requiring crating ship within 2 business days. International shipping (Canada, Mexico, EU, APAC) takes 3-7 business days via DHL Express or FedEx International Priority.
The ST9546AG 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.
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 ST9546AG?
The ST9546AG is a Seagate enterprise-grade hard drive with spindle speed 4,500 RPM and form factor 2.5-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 ST9546AG
Pros
Same-day US shipping from our US warehouse
Cons
Not recommended for OLTP databases above 50 TPS
Mechanical drive — expect 5–10W idle power per unit
3.5" form factor only — confirm caddy fit before ordering
Frequently Asked Questions about ST9546AG
Is the ST9546AG a genuine Seagate part?
Yes. Pro Disk Network sources every ST9546AG 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 ST9546AG work with my RAID controller?
The ST9546AG 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 ST9546AG ship?
Pro Disk Network dispatches the ST9546AG same-day on orders confirmed before 3 pm ET. Multi-pallet projects requiring crating ship within 2 business days. International shipping (Canada, Mexico, EU, APAC) takes 3-7 business days via DHL Express or FedEx International Priority.
What is the warranty on the ST9546AG?
New ST9546AG 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 ST9546AG?
Email sales@prodisknetwork.com with the quantity and target ship date for a quote within one business day.
How to Pick the Right Drive Capacity for Your Use Case
If the ST9546AG is going into a RAID array, choose RAID 6 over RAID 5 for any capacity tier built from drives larger than 4 TB. The probability of a second drive failing during rebuild from a 6+ TB rebuild window is high enough that single-parity is no longer responsible. For all-flash arrays, RAID 10 still wins on write-amplification-sensitive workloads (OLTP databases, VDI write-cache).
Drive Health Monitoring: SMART, Workload Rating, and Predictive Failure
Once the ST9546AG is in production, the single most impactful operational practice is SMART monitoring tied to your existing alerting stack. SMART attributes 187 (reported uncorrectable errors), 197 (current pending sector count), and 198 (offline uncorrectable sector count) are the leading indicators of impending drive failure. Alert on non-zero values, not just on absolute thresholds; once these attributes leave zero, the drive has typically 30-90 days of useful life remaining.