- VoIP & Phone Systems
How to Move Your VoIP Phone System to a New Office
11 Feb, 2026







£2570.34 inc. VAT
AI-generated summary
If you’re paying £2,142 ex-VAT for an ASUS 1U rack server, you’d better have a very specific use-case in mind. At this price point, the RS501A-E12 is really aimed at shops that need a compact, dependable platform for standard workloads—think virtualization at modest scale, small private clouds, or database/app front-ends where “it has to just work” matters more than squeezing out maximum performance per watt. ASUS is generally solid on build quality and manageability for this tier, so if your priority is a straightforward 1U chassis that fits cleanly in existing racks and stays serviceable, it’s a reasonable bet.
That said, I’d be cautious if you’re buying purely on spec value. 1U systems are inherently harder to cool and tend to be less forgiving when you’re running sustained, heavy loads—noise, thermals, and fan behaviour become part of the daily reality. Also, at this budget, you should compare it against alternatives from other vendors that often bundle better service terms or more attractive upgrade paths. If you’re unsure, don’t buy in a vacuum: check your expected workload, whether you’ll be using remote management properly, and what the total cost looks like after memory/drive requirements and support. For the right workload and a competent IT team, it’s a “boring in a good way” server; for general-purpose growth or unclear requirements, it can be an expensive lesson.

Lenovo
Lenovo ThinkSystem SR250 7Y51 - Server - rack-mountable - 1U - 1-way - 1 x Xeon E-2246G / up to 4.8 GHz - RAM 16 GB - SATA - hot-swap 2.5" bay(s) - no HDD - Matrox G200 - Gigabit Ethernet - no OS - monitor: none

Lenovo
Lenovo - Power supply - redundant (plug-in module) - 80 PLUS Platinum - 450 Watt - for ThinkAgile VX 1SE Certified Node, ThinkAgile VX1320 Appliance, ThinkSystem SR250

Lenovo
Lenovo ThinkSystem SR250 7Y52 - Server - rack-mountable 1U - 1-way - 1 x Xeon E-2276G / up to 4.9 GHz - RAM 16 GB - SATA - hot-swap 2.5" bay(s) - no HDD - Matrox G200 - Gigabit Ethernet - no OS - monitor: none

Asus
ASUS ESC4000 G4 - Server - rack-mountable 2U - 2-way - no CPU - RAM 0 GB - SATA - hot-swap 3.5" bay(s) - no HDD - AST2500 - Gigabit Ethernet - no OS - monitor: none