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more typos + clarification

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AtelierSnek 2022-10-31 19:49:17 +11:00
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@ -59,7 +59,7 @@ This would normally be something to consider carefully, but a good friend was ge
that came with the case. that came with the case.
### The PSU ### The PSU
We have a spare 850W 80+ Gold PSU lying around the house from an old PC, so we'll just repurpose that here. We have a spare 750W Silverstone 80+ Platinum PSU lying around the house from an old PC, so we'll just repurpose that here.
### The Storage ### The Storage
It's probably strange to start with the storage, but we'll need to know how much storage we have to spec out It's probably strange to start with the storage, but we'll need to know how much storage we have to spec out
@ -123,21 +123,25 @@ prohibitively expensive to put it lightly.
Again, balancing cost and performance, 2 ✕ 500GB Seagate FireCuda 530s does the job well. Relatively high endurance, Again, balancing cost and performance, 2 ✕ 500GB Seagate FireCuda 530s does the job well. Relatively high endurance,
good random IO performance, and not too expensive. Two of these sets us back 600 AUD. good random IO performance, and not too expensive. Two of these sets us back 600 AUD.
#### Final Storage Configuration
Our final storage array consists of 12 ✕ 16 TB Seagate Exos Drives, and 2 ✕ 500GB Seagate FireCuda 530s.
With 8 data slices, 3 parity slices, and 1 hot spare slice, we should end up with approximately 110 TB of usable space.
### The CPU ### The CPU
We're going to make an executive decision and go with an AMD EPYC CPU, because we've always wanted to use one. We're going to make an executive decision and go with an AMD EPYC CPU, because we've always wanted to use one.
That said, we have a few options: That said, we have a few options:
| Model | Generation | RRP (USD) | Cores (threads) | Clock (GHz) | L3 Cache (MB) | TDP (W) | | Model | Generation | RRP (USD) | Cores (threads) | Clock (GHz) | L3 Cache (MB) | TDP (W) |
| ----- |:----------:|:---------:|:---------------:|:-----------:|:-------------:|:-------:| | -------- |:----------:|:---------:|:---------------:|:-------------:|:-------------:|:-------:|
| 7272 | Rome | 625 | 12 (24) | 2.9 - 3.2 | 64 | 120 | | 7272 | Rome | 625 | 12 (24) | 2.9 - 3.2 | 64 | 120 |
| 7302 | Rome | 978 | 16 (32) | 3.0 - 3.3 | 128 | 155 | | 7302 | Rome | 978 | 16 (32) | 3.0 - 3.3 | 128 | 155 |
| 7352 | Rome | 1350 | 24 (48) | 2.3 - 3.2 | 128 | 155 | | **7352** | **Rome** | **1350** | **24 (48)** | **2.3 - 3.2** | **128** | **155** |
| 7402 | Rome | 1783 | 24 (48) | 2.8 - 3.35 | 128 | 180 | | 7402 | Rome | 1783 | 24 (48) | 2.8 - 3.35 | 128 | 180 |
| 7F72 | Rome | 2450 | 24 (48) | 3.5 - 3.9 | 192 | 240 | | 7F72 | Rome | 2450 | 24 (48) | 3.5 - 3.9 | 192 | 240 |
| 7452 | Rome | 2025 | 32 (64) | 2.35 - 3.35 | 128 | 155 | | 7452 | Rome | 2025 | 32 (64) | 2.35 - 3.35 | 128 | 155 |
| 7453 | Milan | 1570 | 28 (56) | 2.75 - 3.45 | 64 | 225 | | 7453 | Milan | 1570 | 28 (56) | 2.75 - 3.45 | 64 | 225 |
| 7413 | Milan | 1825 | 24 (48) | 2.85 - 4.00 | 128 | 200 | | 7413 | Milan | 1825 | 24 (48) | 2.85 - 4.00 | 128 | 200 |
| 7513 | Milan | 2840 | 32 (64) | 2.6 - 3.65 | 128 | 200 | | 7513 | Milan | 2840 | 32 (64) | 2.6 - 3.65 | 128 | 200 |
The odd one out here is the `7F72`, which is a frequency-optimised model, designed for maximum performance per core, The odd one out here is the `7F72`, which is a frequency-optimised model, designed for maximum performance per core,
to get around per-core licensing issues in enterprise applications. While cool, it being nearly double the price to get around per-core licensing issues in enterprise applications. While cool, it being nearly double the price
@ -202,24 +206,23 @@ Since we're expecting mixed workloads (from friends), we'll follow the same guid
so we'll need at least 4 ✕ 48 = 192GB. With 8 slots on the mobo, so we'll need at least 4 ✕ 48 = 192GB. With 8 slots on the mobo,
that means we'll have to use 32GB modules (or 64GB modules if we feel like going overboard). that means we'll have to use 32GB modules (or 64GB modules if we feel like going overboard).
Our motherboard comes with 8 RAM slots and the Rome Epyc CPUs support octo-channel RAM, so we'd get Our motherboard comes with 8 RAM slots and the Rome EPYC CPUs support octo-channel RAM, so we'd get
the best performance from fully populating the RAM slots. the best performance from fully populating the RAM slots.
This however makes upgrading painful, so we're going to go with 4 ✕ 32GB @ 2400MHz for 128GB total for now, which sets This however makes upgrading painful, so we're going to go with 4 ✕ 32GB @ 2400MHz for 128GB total for now, which sets
us back ~1000 AUD. us back ~1000 AUD.
## The Damage ## The Damage
All up, we've spent: All up, we've settled on:
| Part | Cost (AUD) | Running Total (AUD) | | Component | Selected Part | Cost (AUD) | Running Total (AUD) |
|:--------------:|:---------------:|:-------------------:| |:--------------:|:----------------------------------------------------:|:---------------:|:-------------------:|
| 3U Server Case | FREE! | 0 | | 3U Server Case | Who Even Knows? | FREE! | 0 |
| PSU | FREE! | 0 | | PSU | SilverStone 750W Platinum <br /> (SST-SX750-PT) | FREE! | 0 |
| CPU | 1500 | 1500 | | CPU | AMD EPYC 7352 <br /> (24 core / 48 thread) | 1500 | 1500 |
| RAM | 1000 | 2500 | | RAM | 4 ✕ 32GB@2400MHz <br /> (M393A4K40CB1-CRC) | 4 ✕ 250 = 1000 | 2500 |
| Mass Storage | 12 ✕ 400 = 4800 | 7300 | | Mass Storage | 12 ✕ 16TB Seagate Exos <br /> (1ST16000NM001G) | 12 ✕ 400 = 4800 | 7300 |
| ZIL/L2ARC SSDs | 2 ✕ 300 = 600 | 7900 | | ZIL/L2ARC SSDs | 2 ✕ 500GB Seagate FireCuda 530 <br /> (ZP500GM3A013) | 2 ✕ 300 = 600 | 7900 |
| Motherboard | 1100 | 9000 | | Motherboard | AsRock Rack ROMED8U-2T | 1100 | 9000 |
| | | |
So just shy of 10,000 AUD. It's a hefty price tag, but worth it in our opinion. So just shy of 10,000 AUD. It's a hefty price tag, but worth it in our opinion.