Table 5-34. Storage Policies For A Single Site Activescale X100 - Western Digital ActiveScale X100 Installation Manual

ActiveScale™ X100 Installation Guide

Table 5-34. Storage policies for a single site ActiveScale X100

Policy name
Performance This policy provides the highest
optimized, number of transactions per second.
single site It provides a usable capacity of
72% of the raw disk capacity. The
system will self-heal up to five
simultaneously failed drives.
Balanced, This policy provides balance
single site between usable capacity,
durability, and throughput. It
provides a usable capacity of 75%
of the raw disk capacity. The
system will self-heal up to five
simultaneously failed drives.
Capacity This policy provides the highest
optimized, usable capacity. It provides a
single site usable capacity of 80% of the raw
disk capacity. The system will self-
heal up to four simultaneously
failed drives.
Default, single
site
Description
• Large files: 18/5.
• Small files: 7/5 with a threshold of 0 to 8,388,608 bytes.
• Average object size: 825-1154 KB depending on disk
• Overhead: Large files: 1.38x, Small files: 4x.
• Durability: Up to 16 nines.
• Availability: Data is available even if one Storage Node is
• Large files: 20/5.
• Small files: 7/5 with a threshold of 0 to 8,388,608 bytes.
• Average object size: 856-1199 KB depending on disk
• Overhead: Large files: 1.33x, Small files: 4x.
• Durability: Up to 16 nines.
• Availability: Data is available even if one Storage Node is
• Large files: 20/4.
• Small files: 6/4 with a threshold of 0 to 8,388,608 bytes.
• Average object size: 913-1279KB depending on disk
• Overhead: Large files: 1.25x, Small files: 3.5x.
• Durability: Up to 13 nines.
• Availability: Data is available even if one Storage Node is
Performance optimized with a small file threshold of 524,288
bytes.
Details
Default: 524,288.
capacity.
unavailable and one additional drive fails.
Default: 524,288.
capacity.
unavailable and one additional drive fails.
Default: 524,288.
capacity.
unavailable.
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