1.3 KiB
1.3 KiB
SRS-01 — AtlasOS – Calypso Storage Component
Version: 1.0
Target Capacity: 30–60 TB
Transport: iSCSI (SCST)
Date: 2025
1. Purpose
This document specifies requirements for the Storage Repository Component, which provides disk-based backup targets to Bacula through iSCSI.
2. Scope
In Scope
- Physical disk discovery
- Backup repository provisioning
- iSCSI LUN export
- Capacity monitoring and alerts
Out of Scope
- Snapshot scheduling
- Replication
- Deduplication or compression engines
3. Functional Requirements
3.1 Disk Discovery
- Detect block devices and volume groups
- Display disk size, vendor, and health status
3.2 Repository Provisioning
- Create repositories using LVM Logical Volumes
- Optional support for ZFS zvol
- Resize repositories with safety validation
3.3 iSCSI Export
- Export repository as a dedicated iSCSI target
- Map repository as LUN 0
- Enforce initiator ACL
3.4 Capacity Monitoring
- Display used and free capacity
- Configurable warning and critical thresholds
4. Non-Functional Requirements
- No data loss during resize operations
- Minimal disruption to active iSCSI sessions
5. Acceptance Criteria
- Repository is visible as an iSCSI LUN.
- Bacula can mount and write to the disk target.
- Threshold alerts trigger correctly.