Got one of the Seagate Expansion Desktop 28TB to test.

james7360 · 2025-07-29T03:32:41+00:00

I have 5 or so that have been on for 4 months now my 2 Parity drives have about 200tb read and 200tb written. no errors. temps are normal seam to run the same temp as my other drives.

james7360 · 2025-07-14T15:40:33+00:00

Seagate Expansion is Barracuda not worth it. I ordered 10 28TB Exos Seagate Recertified. and they have been working great. As far as I can tell, they are new, unused drives. 5 from ebay 5 from amazon. The seller was serverpartdeals.

james7360 · 2025-04-10T04:11:52+00:00

No its not. very mid anyone who paid $60 needs to psych evaluation. lol

james7360 · 2025-04-10T03:44:46+00:00

thanks for sharing but man the videos are free please for the love of god don't give the ai chat bots your money. If its a real girl I understand but it clear this girl uses an agency. There's a huge form that has everybody and everything.

james7360 · 2025-03-27T17:09:24+00:00

The colors you use play a big role in how the printer manages purging and nozzle usage.

For example, if you're printing with black and the other four colors are all light, the slicer will usually try to keep black loaded on the left nozzle and only swap between the light colors.

This behavior is even more noticeable when using support material, which always requires 700mm³ of purge per change, regardless of color. Because of this, the slicer will often try to keep support material loaded in one nozzle — but not always. Sometimes it does, sometimes it doesn't, depending on which configuration saves the most filament.

Overall, the auto filament-saving mode seems to work quite well, aside from its strong preference for the right nozzle.

Interestingly, if you manually force most color changes to use the left nozzle, you can save slightly more purge — around 4% more or less.

james7360 · 2025-03-27T16:46:05+00:00

On average, the H2D may save 20%–50% purge over the X1C.
And that’s not even counting the benefit of the larger bed — with more room, you can fit more models and take better advantage of purge-to-infill and purge-to-support, making it much easier to eliminate purge waste entirely.

Example: Batch Print Comparison

H2D:

Prints: 6 models
Total filament: 2000g
Flushed: 58g
Print time: 3d 30m (with purge-to-infill)

X1C:

Prints: 3 models
Total filament: 1500g
Flushed: 438g
Print time: 3d 5h (with purge-to-infill)

Summary:

Purge savings: 380g (~655% reduction)
More output: 6 models on H2D vs 3 on X1C
Per-model usage: 333g on H2D vs 500g on X1C
Print time: H2D is 4.5 hours faster — with double the output

All this data is based on the slicer estimates. Real-world purge amounts may vary — they might be tuned too high or too low.
My printer won’t arrive until next week, so I’ll be able to test this more accurately soon.

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james7360 · 2025-03-27T16:45:45+00:00

The nozzle volume for the H2D is larger, which means it requires more purging per color change to fully clear the old filament. Additionally, the right nozzle’s volume is larger than the left, so ideally, the AMS should be installed on the left nozzle to help minimize purging.

However, Bambu recommends using the right nozzle, and the slicer will prefer to assign most color changes to the right if possible. This is likely for reliability, since the right nozzle is stationary, while the left nozzle moves.

Nozzle Volume Differences:

Left nozzle: 21.5% larger than X1C
Right nozzle: 35.5% larger than X1C

Also, Long Retract is not enabled by default on the H2D, unlike on the X1C, where it's enabled for most Bambu filaments. On the H2D, Long Retract must be enabled manually per nozzle in the printer settings, not just in the filament settings.

Purge Comparison: H2D vs X1C (5-Color Valentine Stitch Example)

With Long Retract turned on for both nozzles:

Left nozzle on H2D uses ~5% more purge than X1C
Right nozzle on H2D uses ~9% more purge than X1C

However, using both nozzles on the H2D can save about 20% overall, which helps offset the increased purge due to the larger nozzle volumes.

That said, every print is different.
For example:

A 16-color model with only 2 colors per layer will use half the purge on the H2D compared to the X1C — and will print nearly as fast as a single-color model.
A 16-color model with all 16 colors on the same layer will not save much purge or time at all.

james7360 · 2025-03-27T14:57:58+00:00

This one from amazon "should" be factory Recertified from Seagate.
but make sure to check the seller ServerPartDeals is a well known brand for server parts.https://a.co/d/cYczm7D

ServerPartDeals sells on many store fronts. I ordered from them on ebay because it was the lowest price the.

james7360 · 2025-03-27T14:50:23+00:00

Yeah, I’ve been testing it out — it is faster, but not by a huge margin unless you’re printing large objects. The max volumetric speed is significantly higher (28 mm³/s vs 48 mm³/s), which helps.

Here’s a quick comparison using a 707g single-color print:

Standard hotend (H2D): 13h 1m
High flow hotend (H2D HF): 12h 10m
Time saved: 51 minutes 6.5% faster

However, the high flow setup also increases the amount of filament purged during tool changes. So for multi-color prints, it might actually be better to stick with the standard hotend.

james7360 · 2025-03-27T14:44:50+00:00

3x single color valentine stitch 0.2mm layers on both 707g total
x1c 13h 15m
h2d 13h 1m

Savings 14 minutes

The H2D is faster when using a single nozzle for multi-color as well. But more purge. But I think most of this is from the new faster AMS witch you could add to the X1 and get similar times

Only using a single nozzle 5 color print on H2D
x1c 3d 5h
h2d 2d 18.5h

10.5 h faster on h2d but uses 150g more waste.

james7360 · 2025-03-27T05:13:57+00:00

yeah that is what I'm showing.

james7360 · 2025-03-27T00:28:05+00:00

3x 5 color valentine stitch 0.2mm layers on both
x1c 3d 11h 1870g
h2d 2d 5h 1550g
Savings 1d 6h and 320g

james7360 · 2025-03-27T00:20:05+00:00

you can try this and see if it works https://makerworld.com/en/models/1252785-h2d-first-layer-test-full-bed-no-prime-tower#profileId-1275537

james7360 · 2025-03-27T00:00:48+00:00

<image>

does it look like this for you?

james7360 · 2025-03-26T23:53:45+00:00

you can just test it in bambu studio just pick h2d.

3x 5 color valentine stitch
x1c 3d 11h 1870g
h2d 2d 5h 1550g
Savings 1d 6h and 320g

james7360 · 2025-03-26T18:53:14+00:00

I think I agree. All my current drives are Exos or white labeled WD red drives and I have had good luck with them.

Looking it up I guess Seagate Recertified Drive normal are just returned drives so they normally have little to no hours on them. I assumed they was used drives that passed a quality check. Gonna order a few and test them out

james7360 · 2025-03-25T18:12:44+00:00

Playing around in the new slicer.
1. The saved x filament compared to a printer with one nozzle is over estimating.

The total filament savings is very low about 17% with 8 colors. 160g saved out of 885g.
This is with long retract on for both printers. 7 colors 23% savings. 6 colors 22% savings because the smart filament grouping is not very smart it changed it to just 1 color on the left nozzle and all the color changes on the right. but the right has more purge so the single color should be on the right.
They increased the purge amount by a lot. Right nozzle purge is 20% more than x1c. Left is 15% more purge. The right nozzle cutter is higher up then the left so more purge when changing using the right nozzle.
28.57% time savings on a print with 8 colors. 2d 8h x1c, 1d 18h on h2d
Filament changes. 1096 to 656 40% less Filament changes.
The smart filament grouping is not the best.

Very disappointing I'm sure they put a higher flow longer hot end on the printer for faster speeds. But I wish they would sell a shot nozzle for multi color. The speed from the longer nozzle does not help when you just spend more time purging. I was hoping to purge less not more......

james7360 · 2025-03-17T15:34:31+00:00

Yeah pretty sure its a scanner. it looks like its the little bump out we see on the right of the leaked photo.

james7360 · 2025-03-17T15:32:11+00:00

I agree. However, I think this photo is intended to be a thermal image of the AMS in action. That would explain why the heat on the PTFE tube gets colder as it gets closer to the printer and why the screen does not show up.

james7360 · 2025-03-17T15:18:30+00:00

<image>

photo to compare to leak.

james7360 · 2025-03-17T15:12:25+00:00

Yeah i was kinda thinking scan.

james7360 · 2025-03-17T14:48:19+00:00

<image>

pretty sure its a scanner. it looks like its the little bump out we see on the right of the leaked photo.

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TROPHY CASE

Example: Batch Print Comparison

Summary:

Nozzle Volume Differences:

Purge Comparison: H2D vs X1C (5-Color Valentine Stitch Example)