IBM Storage Scale System 6000 Service Manual page 47

The customer can use the new space by creating new vdisk sets from the available space. When the
vdisk sets are added to the existing file system (if needed), the restripe operation can be run. For
more information, see mmrestripefs command IBM Storage Scale: Administration Guide.
When you are adding a vdisk set to a file system, the default TRIM setting is "no" irrespective of the
TRIM settings of the existing vdisk sets. Issue the mmvdisk filesystem add command with the
--trim {auto|no} option to select TRIM settings when you are adding a vdisk set to a file system.
For more information, see Enable, disable, extend, and view TRIM settings on an existing declustered
array and file system in the Managing TRIM support for storage space reclamation chapter in IBM
Storage Scale RAID: Administration Guide.
IBM FlashCore Module concurrent MES upgrade for IBM Storage Scale
System 6000
An online IBM Storage Scale System 6000 MES upgrade is supported for customers who want to upgrade
a 24-FCM-drives IBM Storage Scale System 6000 to a 48-FCM-drives IBM Storage Scale System 6000.
To upgrade the system, the IBM FlashCore Modules (FCMs) with the same capacity as the existing 24
drives must be used. This MES upgrade doubles the available storage capacity in the existing IBM Storage
Scale System 6000. For this concurrent upgrade, it is suggested to complete this operation during a
period of low workload stress. Existing customer recovery group and file system data are preserved during
the MES upgrade.
Supported upgrade path: 24-FCM IBM Storage Scale System 6000 > 48-FCM IBM Storage Scale System
6000
Prerequisites
• All new or existing building blocks must be at the IBM Storage Scale System 6.2.2.0 or higher. If the
setup has any protocol nodes, these nodes must also be upgraded to IBM Storage Scale System 6.2.2.0
levels.
• The system must be working correctly before the IBM Storage Scale System 6000 storage MES upgrade.
• The existing IBM Storage Scale System 6000 must be a properly installed 24-FCM system with 24 FCM
storage drives correctly located in all the even slots (2, 4, 6, ..., 20, 22, 24) in the upper half and all the
odd slots (25, 27, 29, ..., 43, 45, 47) in the bottom half.
• If the canister servers are allocated as quorum servers, understand the implications of losing a quorum
server on one canister server at a time during this operation. If you do not want to lose the quorum,
move the quorum to different servers during this procedure.
• It is suggested to wear an ESD wrist band when you work on the hardware, for example, inserting FCM
drives.
Chapter 1. Servicing (customer tasks) 35