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Reworked wording, closes #101
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Signed-off-by: Andre Machowiak <[email protected]>
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nerdicbynature committed Jun 13, 2024
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## Übersicht

{{% alert title="Hinweis" color="info" %}}
pluscloud open wird bald die Option Local SSD Storage anbieten.
Verfügbar ab Juli 2024
{{% /alert %}}

Standard Shared Storage auf Basis von Ceph hat ein ausgewogenes Leistungsprofil, das nicht für alle Anwendungsfälle geeignet ist. Insbesondere Etcd und transaktionale Datenbanken wie Postgres sind dafür bekannt, dass es hier zu Performance-Problemen kommt.
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In der folgenden Tabelle werden die Merkmale von Ceph-Volumes mit denen von Local SSD Storage verglichen:

| Eigenschaften | Ceph-Boot-Volume | Boot-Volume von Local SSD Storage |
|------------------|-------------------|--------------------------------|
| Speicheranbieter | Cinder | Nova |
| Durchsatz | <span style="color: red;">Niedrig</span> | <span style="color: green;">Hoch</span> |
| Latenz | <span style="color: red;">Hoch</span> | <span style="color: green;">Niedrig</span> |
| Live-Migration | <span style="color: green;">Möglich</span> | <span style="color: red;">Nicht Möglich</span> |
| Verfügbarkeit | <span style="color: green;">Hoch</span> | <span style="color: red;">Niedrig</span> |
| Flüchtiger Speicher | Nein | Ja |
| Eigenschaften | Ceph-Boot-Volume | Boot-Volume von Local SSD Storage |
|------------------|----------------------|-----------------------------------|
| Speicheranbieter | Cinder | Nova |
| Durchsatz | Standard | Verbessert |
| Latenz | Standard | Reduziert |
| Live-Migration | Ja | Nein |
| Verfügbarkeit | Dreifach-Replikation | Lokales RAID |

### Verfügbarkeit

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## Overview

{{% alert title="Note" color="info" %}}
pluscloud open will soon offer the Local SSD Storage option.
Available July 2024
{{% /alert %}}

Standard shared storage based on Ceph has a balanced performance profile that is not suitable for all use cases. In particular, Etcd and transactional databases such as Postgres are known to have performance issues here.
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| Characteristics | Ceph boot volume | Local SSD Storage boot volume |
|------------------|-------------------|--------------------------------|
| Storage provider | Cinder | Nova |
| Throughput | <span style="color: red;">Low</span> | <span style="color: green;">High</span> |
| Latency | <span style="color: red;">High</span> | <span style="color: green;">Low</span> |
| Live migration | <span style="color: green;">Yes</span> | <span style="color: red;">No</span> |
| Availability | <span style="color: green;">High</span> | <span style="color: red;">Low</span> |
| Ephemeral | No | Yes |
| Storage provider | Cinder | Nova |
| Throughput | Standard | Enhanced |
| Latency | Standard | Reduced |
| Live migration | Yes | No |
| Availability | Triple copies | Local RAID |

### Availability

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