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How to sizing your data disk correctly?

This article provides step by step guidance on how to size and configure your data disks correctly based on specific storage allocation requirements. The configuration uses two disks - a Fixed disk and a Slider disk - each with fixed partition sizes for Metadata, Cache, and Snapshots.

Storage Configuration

When provisioning your data disk, allocate space using the following percentages:

Volume Description Percentage
Metadata (F:) Used for storing metadata information 10%
Cache (G:) Used for caching operations 100%
Snapshot Used for snapshot storage 90%

Example: Disk Space Allocation Based on Actual Capacity

Disk 1 (Fixed, 1024 GB):

Metadata (F:) → 10% of 1024 GB = 102.4 GB

Snapshots (unlabelled) → 90% of 1024 GB = 920.7 GB

Disk 2 (Slider, 512 GB):

Cache (G:) → 100% of 512 GB = 512 GB (This allocation corresponds to the 40% cache rule when considering the combined total capacity of 1536 GB.)

Steps to Partition Disks in Windows

    • Press Windows + X and choose Disk Management.
    • Locate Disk 1 (Fixed) and Disk 2 (Slider).
    • For Disk 1:
      • Create a partition for F: Metadata (102.4 GB).
      • Allocate the remaining space (~920.7 GB) for Snapshots.
    • For Disk 2:
      • Create a partition for G: Cache (512 GB).
    • Assign drive letters and format each volume (use NTFS).

Final Partition Layout

    • F: Metadata Volume  - 102.4 GB (10% of Fixed disk)
    • G: Cache Volume -  512 GB (100% of Slider disk, equivalent to ~40% of total capacity)
    • Snapshots Volume (unlabelled) -  920.7 GB (remaining 90% of Fixed disk, equivalent to ~50% of total capacity)
      DiskSize-01

      This ensures optimal utilization of available storage space based on system requirements.