A drive that is wrong for the workload costs more than just money. It slows performance, shortens lifespan and creates compatibility issues that surface at the worst possible time. At Zaco Computers UK Limited we supply new and refurbished enterprise-grade HDDs and SSDs across a wide range of capacities and interfaces, including SAS, SATA and NVMe, to support servers, storage arrays and NAS systems
We use the same underlying drive manufacturers and models as the major OEMs, ensuring full compatibility with HPE ProLiant, Dell PowerEdge, Lenovo ThinkSystem and IBM servers.
Every drive we supply is rigorously tested and certified before dispatch, with a warranty included and 24/7 free remote support available across the United Kingdom.
SSD vs HDD: Key Differences Between Solid State Drives and Hard Disk Drives
Choosing between an HDD and an SSD comes down to your workload, budget and capacity requirements. Both have a clear role in enterprise environments. Understanding the differences helps you get the right drive in the right slot, rather than overspending on performance you do not need or under-specifying where it counts.
| Specification | HDD | SSD |
|---|---|---|
| Best Use | High capacity storage, archive, backup | High IOPS, low latency, boot drives |
| Speed | 80 to 160 MB/s typical | 200 MB/s to 7,000 MB/s (NVMe) |
| Capacity | Up to 20 TB per drive | Up to 30.72 TB (NVMe) |
| Durability | Moving parts, more vulnerable to shock | No moving parts, more resilient |
| Power | Higher draw | Lower draw |
| Noise | Audible during operation | Silent |
| Cost per GB | Lower, best for bulk storage | Higher, justified by performance |
| Form Factors | 2.5β³, 3.5 inch | 2.5β³, 3.5β³, M.2, U.2, PCIe |
| Interfaces | SATA, SAS | SATA, SAS, M.2, PCIe NVMe |
| NVMe | Not applicable | PCIe 3.0 / 4.0 / 5.0, lowest latency |
New and Refurbished Hard Drives & Solid State Drives Available in the UK
Every server and workload has different storage demands. Some need raw capacity at low cost per terabyte. Others need the highest possible IOPS with the lowest latency. Below are the three enterprise drive types we stock and supply across the UK, each suited to different environments and budgets.
Enterprise SAS HDDs deliver dual-port redundancy, sustained throughput and a design life suited to 24/7 server and storage array operation. Available in 2.5β³ SFF and 3.5β³ LFF at 7.2K, 10K and 15K RPM, from 300 GB to 20 TB.
Interface
SAS 12Gb/s, SAS 6Gb/s
Form Factors
2.5β³ SFF Β· 3.5β³ LFF
Spindle Speeds
7,200 rpm (nearline), 10K, 15K rpm
Capacity Range
300 GB to 20 TB
SATA SSDs fit the same 2.5β³ and 3.5β³ bays as conventional HDDs with no hardware changes required. We offer two endurance levels per capacity: read-intensive (~1 DWPD) and mixed-use (~3 DWPD), fully compatible with Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem and IBM servers.
Interface
SATA 6Gb/s
Form Factors
2.5β³ SFF Β· 3.5β³ LFF
Read Speed
Up to 560 MB/s
Capacities
240 GB Β· 480 GB Β· 960 GB Β· 1.92 TB Β· 3.84 TB Β· 7.68 TB
NVMe drives communicate directly over PCIe, bypassing legacy storage protocols for exceptional throughput and sub-millisecond latency. Suited to databases, virtualisation and AI workloads. Compatible with Dell PowerEdge (14G+), HPE ProLiant Gen10+ and Lenovo ThinkSystem.
Interface
PCIe 4.0 / 5.0 NVMe
Form Factors
U.2 (2.5β³) Β· M.2 Β· EDSFF
Read Speed
Up to 7,000 MB/s
Capacity Range
400 GB to 30.72 TB
SAS, SATA or NVMe: Which Interface Do You Need?
Use the guide below to match the interface to your workload and server. Not sure? Call us and we will confirm compatibility before you order.
| Specification | SAS Serial Attached SCSI | SATA Serial ATA | NVMe Non-Volatile Memory Express |
|---|---|---|---|
| Best For | Storage arrays, SANs, high-availability servers where dual-path redundancy is required | Boot volumes, secondary storage, cost-optimised builds and direct-attached storage | Databases, OLTP, virtualisation hosts, AI inference, real-time analytics |
| Transfer Speed | Up to 12Gb/s per port; dual-port provides up to 24Gb/s aggregate | Up to 6Gb/s (SATA III) | Up to 7,000 MB/s sequential; sub-100 Β΅s latency on random I/O |
| Drive Types | HDDs (7.2K, 10K, 15K rpm) and SAS SSDs | HDDs and SSDs | SSDs only (U.2, M.2, EDSFF form factors) |
| Dual-Port | Yes, multipath I/O eliminates single points of failure | Single-port only, not suitable for dual-path configurations | Sub-millisecond, up to 10Γ lower than SAS SSD on random workloads |
| Compatible Servers | Dell PowerEdge, HPE ProLiant, Lenovo ThinkSystem, IBM | Virtually all servers and workstations with a SATA backplane or controller | Dell PowerEdge (14G onwards), HPE ProLiant Gen10 onwards, Lenovo ThinkSystem |
| Best choice for high-availability servers and storage arrays where redundant data paths are required. | Ideal for OS boot volumes, secondary storage and cost-sensitive builds where dual-path redundancy is not required. | Choose NVMe when your workload is I/O-bound. Databases, virtualisation and AI inference benefit most. |
Why Do UK Businesses Buy HDD & SSDs From Zaco?
At Zaco Computers UK Limited, a trusted IT solutions company in the UK, we specialise in high-quality new and refurbished enterprise IT hardware from trusted brands like HPE, Dell, Lenovo, and IBM. Every hard drive and SSD we supply undergoes rigorous qualification testing and certified data erasure by our expert technical team, guaranteeing compatibility and reliable performance across a wide range of server platforms and operating systems, old and new.
We also offer:
β Server-matched supply β interface, firmware and form factor confirmed against your server model before every order
β Warranty included on every unit
β 24/7 free remote support for compatibility queries
β UK-stocked and dispatched from London within minimal time.
Frequently Asked Questions About HDD & Solid State Drives
Answers to the questions we receive most frequently from IT procurement leads and infrastructure managers. Contact us if your query is not addressed below.
Get a Same-Day Quote on Hard Drives and SSDs
Tell us your server model, drive type and required quantity. Call us on +44 20 3435 8060 or email us at info@zacocomputer.com, and our expert team will provide a fully compatible recommendation and quote within hours.