first stab at mkdocs migration

docs/merlin7/01-Quick-Start-Guide/introduction.md

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+---
+title: Introduction
+#tags:
+keywords: introduction, home, welcome, architecture, design
+last_updated: 07 September 2022
+sidebar: merlin7_sidebar
+permalink: /merlin7/introduction.html
+redirect_from:
+  - /merlin7
+  - /merlin7/index.html
+---
+
+## About Merlin7
+
+The Merlin7 cluster is moving toward **production** state since August 2024, this is expected latest by Q4 2025. Since January 2025 the system has been generally available,
+but due to some remaining issues with the platform, the schedule of the migration of users and communities has been delayed. You will be notified well in advance
+regarding the migration of data.
+
+All PSI users can request access to Merlin7, please go to the [Requesting Merlin Accounts](/merlin7/request-account.html) page and complete the steps given there.
+
+In case you identify errors or missing information, please provide feedback through [merlin-admins mailing list](mailto:merlin-admins@lists.psi.ch) mailing list or [submit a ticket using the PSI service portal](https://psi.service-now.com/psisp).
+
+## Infrastructure
+
+### Hardware
+
+The Merlin7 cluster contains the following node specification:
+
+| Node     | #N | CPU                                             | RAM             | GPU         | #GPUs |
+| ----:    | -- | ---                                             | ---             | ----:       | ---:  |
+| Login    |  2 | 2 AMD EPYC 7742 (64 Cores 2.25GHz)              | 512GB           |             |       |
+| CPU      | 77 | 2 AMD EPYC 7742 (64 Cores 2.25GHz)              | 512GB           |             |       |
+| GPU A100 |  8 | 2 AMD EPYC 7713 (64 Cores 3.2GHz)               | 512GB           | A100 80GB   |     4 |
+| GPU GH   |  5 | NVIDIA ARM Grace Neoverse v2 (144 Cores 3.1GHz) | 864GB (Unified) | GH200 120GB |     4 |
+
+### Network
+
+The Merlin7 cluster builds on top of HPE/Cray technologies, including a high-performance network fabric called Slingshot. This network fabric is able
+to provide up to 200 Gbit/s throughput between nodes. Further information on Slignshot can be found on at [HPE](https://www.hpe.com/psnow/doc/PSN1012904596HREN) and
+at <https://www.glennklockwood.com/garden/slingshot>.
+
+Through software interfaces like [libFabric](https://ofiwg.github.io/libfabric/) (which available on Merlin7), application can leverage the network seamlessly.
+
+### Storage
+
+Unlike previous iteration of the Merlin HPC clusters, Merlin7 _does not_ have any local storage. Instead storage for the entire cluster is provided through
+a dedicated storage appliance from HPE/Cray called [ClusterStor](https://www.hpe.com/psnow/doc/PSN1012842049INEN.pdf).
+
+The appliance is built of several storage servers:
+
+* 2 management nodes
+* 2 MDS servers, 12 drives per server, 2.9TiB (Raid10)
+* 8 OSS-D servers, 106 drives per server, 14.5 T.B HDDs (Gridraid / Raid6)
+* 4 OSS-F servers, 12 drives per server 7TiB SSDs (Raid10)
+
+With effective storage capacity of:
+
+* 10 PB HDD
+  * value visible on linux: HDD 9302.4 TiB
+* 162 TB SSD
+  * value visible on linux: SSD 151.6 TiB
+* 23.6 TiB on Metadata
+
+The storage is directly connected to the cluster (and each individual node) through the Slingshot NIC.