If you're reading this, you've probably got a server that needs a home, and the deadline is measured in hours, not weeks. I've been in that spot more times than I can count—triaging rush orders for HPE deployments where the standard lead time feels like a luxury. Let me walk you through the decisions I've made (and the ones I regret) when picking Rittal enclosures for HPE servers.
First, there's no one-size-fits-all answer. It depends on how much time you have, whether you need a full rack or a wall-mount box, and if you're installing new or retrofitting existing gear. I'll break it into three common scenarios.
Scenario A: You Have a Week (or a Few Days)
This is the 'we should have ordered last month but here we are' situation. You've got 5–7 business days. Most Rittal distributors stock standard models. For HPE ProLiant servers (like the DL360 or DL380), a 42U or 47U server cabinet is the obvious choice.
My go-to: Rittal's TS IT server cabinet series. It's modular, comes with pre-installed mounting rails, and handles HPE's rail kits without fuss. I've done maybe 30 of these deployments. If I remember correctly, the lead time on the TS 8610 (42U) is typically 3–5 days from major US distributors—at least as of late 2024. But check with your rep; stock fluctuates.
Oh, and one thing I should add: if you need the cabinet delivered inside a building tight on space, ask for the 'knock-down' version. It ships flat and assembles on-site. Saved us once when the loading dock couldn't accommodate a full crate.
When the WM Series Makes Sense
For smaller HPE gear—like an EdgeLine server or a network switch—you might consider Rittal's WM enclosures. The WM line has been around forever, and model 3310 is a popular size (approx. 600×400×200 mm). But here's the thing: the WM 3310 is designed for wall mounting, not a full rack. If you're installing a single 1U HPE server, it works. You just need to order the correct mounting plate.
Honestly, I've made the rookie mistake of ordering a WM 3310 for a 2U server. It fit, but barely. The cooling wasn't great because the airflow was blocked. Learned that lesson when the thermal alarm went off on a Friday afternoon—cost me a weekend rework.
Scenario B: You Have 48 Hours (Rush Order)
This is when panic sets in. Standard distribution won't cut it. You need to call Rittal's express service (they have a program called 'Rittal Express' or '24-hour rush' in some regions). Or you find a local distributor that stocks high-turnover models.
Best bet for HPE: The Rittal 'Serverschrank' — basically the German term for 'server cabinet'. In the US, look for the VX IT series or the CM (compact) series. The CM 6018 is a 18U cabinet that ships quickly because it's compact. I've used it for HPE MicroServer Gen10+ deployments. Just be aware: the CM series isn't as deep as the TS, so if your HPE server is longer than 800mm, it won't fit. Measure before you order—
Wait, I should correct that. The CM series depth goes up to 600mm. For HPE DL380 (standard depth ~730mm), you need at least 800mm depth. So the CM won't work. That's the kind of gotcha that burns time you don't have.
My rule of thumb: If the order is under 48 hours, stick with the TS IT or AX series. They're widely stocked. If your distributor doesn't have one, ask if they can do a 'quick-ship' from Rittal's nearest warehouse. In March 2024, I needed a 42U cabinet for a HPE cluster on a Thursday, with a Friday installation deadline. Normal turnaround was 5 days. We paid a 40% rush premium (around $800 extra on a $2,000 base), but the cabinet arrived next morning. The alternative was a $15,000 penalty clause with the client.
So, is rush always worth it? Only if the penalty is bigger than the premium.
Scenario C: You're On-Site and Something's Wrong
This is the nightmare: you've got the Rittal enclosure, you've racked the HPE server, but something isn't working. Maybe the PSU won't power on, or you suspect a capacitor issue in the enclosure's fan unit. If you have a multimeter handy, here's a quick field test that's saved me at least three weekends.
How to test a capacitor with a multimeter (for the fans in Rittal's climate control units, not the server itself).
- Disconnect power to the enclosure fan or cooling unit.
- Set your multimeter to capacitance mode (the symbol is usually a '–|(–' or 'C').
- Touch the probes to the capacitor terminals. Polarity matters for electrolytic caps—red to positive, black to negative.
- Read the value. Compare it to the rating printed on the cap (e.g., 47µF). If it's more than 10% off, the capacitor is degraded.
I know this isn't a standard Rittal product guide, but when you're in a hurry, troubleshooting a faulty capacitor on site can save you hours of waiting for a replacement unit. I've done it twice—once for a Rittal TopTherm AC unit that wouldn't start. The capacitor was dead. Replaced it with one from a local electronics shop ($3.50). The fan started right away.
However, I should mention I don't have hard data on how often capacitor failures happen in Rittal units. Based on my experience with about 200 installations, maybe 2–3% of units show capacitor drift within the first year. If you're dealing with a different brand, your results may vary.
How to Know Which Scenario You're In
Ask yourself three questions:
- How much time do you really have? Include shipping, unpacking, install. If the answer is less than 5 business days, skip Scenario A.
- What HPE server model is it? A MicroServer fits in a small WM enclosure. A full rack server needs at least 800mm depth. Check the HPE QuickSpecs for dimensions.
- Is the site ready? If power and cooling are already in place, you just need the cabinet. If not, you might have bigger problems.
One final thought: Rittal is a solid choice for HPE deployments, but it's not the only choice. If your timeline is impossibly tight, sometimes a used or generic cabinet from a local supplier will do the job temporarily. I've had to do that exactly once—we ordered a Rittal but the client's project manager changed the server depth at the last minute. The generic cabinet was delivered in 4 hours and cost $400 less. It worked for 3 months until the correct Rittal arrived.
So don't be afraid to admit when Rittal isn't the fastest option. That honesty might keep your client happy while you wait for the real solution.
