topic Query: MSA 2060 Host IO Through Standby Controller in MSA Storage

MSA 2060 Host IO Through Standby Controller

JustinGawn — Thu, 25 Jan 2024 11:57:13 GMT

Hello,

I understand that in an MSA 2060 single pool configuration, only one controller is active at any one time. Does this apply to just management of the pool / disk groups, or also handling of host IO to the volume? E.g. are MPIO paths Active across both contollers at the same time?

Consider the following example:

Two dual-port FC hosts (Server 1 & Server 2) are directly connected to the MSA.
Each host has a single FC connection to Controller A, and a single FC connection to Controller B.
There is a single volume on the MSA, and its Pool is active on Controller A.
There has just been a break in the FC cable connecting Server 1 to Controller A, but the pool remains active on Controller A.

Can Server 1 still access the volume through Controller B?

Thank you

Query: MSA 2060 Host IO Through Standby Controller

support_s — Thu, 25 Jan 2024 09:17:20 GMT

System recommended content:

1. HPE MSA 2060 Storage Array - Overview

2. HPE MSA 1060/2060/2062 CLI Reference Guide

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Re: MSA 2060 Host IO Through Standby Controller

Cali — Thu, 25 Jan 2024 11:31:17 GMT

Hi,

yes with a Single Pool, the IO is handled by a Single Controller.
Single Pool is now preferred because the Controllers are now so powerful unless you have a very big configuration.

Both controllers have access to volumes owned by the other controller.

The MPIO ALUA Protocol on the Host manages the optimized Path to the Volume.

Cali