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Dell Storage PS Series Architecture Hybrid Array Load Balancer Specification User Guide

Summary

This Dell EMC white paper (TR1092, Feb 2017) details the hybrid array load balancer within the Dell Storage PS Series architecture. The PS Series is a virtualized, self-tuning storage system that uses intelligent load balancers to optimize performance across hybrid disk arrays combining SSDs and HDDs. The document explains how the load balancer automatically distributes I/O workloads, monitors disk performance metrics, and rebalances data placement to maintain optimal throughput. Targeted at storage administrators, IT architects, and infrastructure engineers managing Dell PS Series SAN environments seeking to understand automated tiering and load balancing mechanisms.

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Dell Storage PS Series Architecture: Hybrid Array Load Balancer The Dell PS Series architecture is a virtualized, self-tuning system that uses intelligent load balancers to maintain system performance at optimum levels. This technical report describes the hybrid array load balancer and how it works. Dell Engineering February 2017

A Dell EMC White Paper

Page Summary Contents For Dell Storage PS Series Architecture Hybrid Array Load Balancer Specification User Guide

Page 1 Dell Storage PS Series Architecture: Hybrid Array Load Balancer The Dell PS Series architecture is a virtualized, self-tuning system that uses intelligent load balancers to maintain system performance...
Page 2 Revisions Date Description March 2013 Initial release February 2017 Update to industry changes The information in this publication is provided “as is.” Dell Inc. makes no representations or warranties...
Page 3 Table of contents Revisions................................................................................................................................................................................
Page 4 Executive summary In many organizations, significant effort is devoted to tuning resources: modifying network settings on switches, changing various parameters on servers, re-configuring Qo S on the W...
Page 5 1 PS Series Storage Dell PS Series storage is an award winning, virtualized, scale-out SAN architecture that provides simplified management, ease of use, a comprehensive set of data protection and rec...
Page 6 2 PS Series hybrid array and load balance One line of PS Series arrays is aimed at increasing performance over HDD-only arrays while balancing cost associated with SSD-only arrays. These hybrid models...
Page 7 HALB Decision Matrix Heat Index If the page is on an SSD If the page is on an HDD Hot Do nothing, page is optimized Attempt to move to SSD Warm Do nothing, page is optimized Move to an SSD if there ar...
Page 8 SSD tier is able to hold, the APLB is able to migrate active data from the HDD tier to another member such as a second hybrid or standard array that may have more resources available to better service...
Page 9 A Technical support and resources Dell.com/support is focused on meeting customer needs with proven services and support. Dell Tech Center is an online technical community where IT professionals have ...

Manual Details

Brand Dell
Pages 9
File Size 327.07 KB
Published June 24, 2026
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Frequently Asked Questions

How does the Dell PS Series hybrid array load balancer work?

It uses intelligent load balancers to maintain system performance and automatically balances SAN resources to optimize utilization.

What is the write caching priority in a hybrid array?

Controller cache is used first, followed by SSD cache, and finally HDD when both caches are exhausted.

How does the Automatic Performance Load Balancer handle hybrid arrays?

It treats them like other group members and migrates active data to them if their SSD tier is full.

What is a key benefit of using Dell PS Series storage?

It reduces operational costs by automating management tasks and optimizing resource utilization.