Hi Claudio -
FCM 4s are FRU parts for FCM 3 drives. The FlashSystem 7300 shipped with support for FCM 3 and 4 drives. This means that in the event of a failure you can just replace an FCM 3 drive with an FCM 4 drive, so there are no Storage Virtualize version considerations for this operation.
Generally, for the supported matrix of Drive types and firmware levels please reference the support pages: https://www.ibm.com/support/pages/node/873170 (please note it is useful to filter by IBM FlashCoreModule in the table, the first digit of the Firmware will reference the generation, so FCM 3_0_1 is an FCM 3, FCM 4_0_4 is an FCM 4) or by checking the model number.
If you want to make use of the new FCM 4 features, you do need to have
1: An array with only FCM 4 drives created on Storage Virtualize version 8.6.2
2: A System running Storage Virtualize version 8.6.3
3: Storage Insights Pro
Details of the above can be found here: FCM Product Guide
If you are intermixing with FCM3s you cannot take advantage of the FCM 4 features, so there are no software considerations other than making sure you are running a generally supported software version. See https://www.ibm.com/support/pages/node/690527 for recommended and supported levels (not for FCM4 specifically, but for the 7300 or other enclosure).
If you are doing a drive replace as the result of a failed drive, you just need to complete the support procedure to allow for the copyback/rebuild to complete. In this case, if you are not running 8.7.0 or newer you should also check the firmware version of the drive and make sure it is recommended and up to date, but this can occur after you are fully redundant.
If you are expanding the array, I recommend running the CCU checker for drive firmware against the drive, updating it and then performing the Array expansion.
No other operations are required, and all of the above procedures can be found on the publications or discussed with IBM support via an open support ticket.
I hope this helps!
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Evelyn Perez
IBM Senior Technical Staff Member
IBM Storage Virtualize Software Architect for SVC and FlashSystem
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Original Message:
Sent: Tue January 28, 2025 02:08 PM
From: claudio fermin
Subject: How to tell if I am running
Hi Evelyn,
Where can I get more information about FCM4 support on the same FCM3 array, for FS7300, firmware level? Is it disruptive? What steps should be done beforehand, etc., thank you
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claudio fermin
Original Message:
Sent: Wed February 14, 2024 04:42 AM
From: Evelyn Perez
Subject: How to tell if I am running
Hi Robert!
FCMs (and only FCMs) use the following Version format:
FCM Generation Major Version Minor Version
So Firmware Level: 3_1_11 Tells you this is an FCM 3 running 1.11
FCM4s are a drop in replacement for FCM3, so they can be used as a FRU part, an MES upgrade or extension of an existing FCM3 RAID array or as new storage in your FCM3 supporting systems (5200, 7300, 9500).
Please note: The FCM4 in the same array as FCM3s will behave as an FCM3.
Generally, FCM3 users don't need to care or pay attention to this.
Cheers,
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Evelyn Perez
IBM Senior Technical Staff Member
IBM Storage Virtualize Software Architect for SVC and FlashSystem
Original Message:
Sent: Tue February 13, 2024 01:15 PM
From: Robert Berendt
Subject: How to tell if I am running
I was reading this announcement https://www.ibm.com/docs/en/announcements/hardware-withdrawal-flashsystem-5200-flashsystem-7300-flashsystem-9500-select-features-replacement-available
Basically it says the following FlashCore Module 3 are being withdrawn and are being replaced with FlashCore Modules 4.
I am trying to determine if this affects me.
Based on the following, what am I on?
Properties for drive 0
Written Capacity Limit: 2.65 TiB Used / 26.19 TiB Total (10.1%)
Raw Capacity: 1.12 TiB Used / 8.73 TiB Total (12.8%)
Write Endurance Limit: Below (0%)
FRU identity: 11S03GH934YS17BG25L02K
UID: 4e564d653033474839333459533137424732354c30324b001014101406b10000
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Robert Berendt IBMChampion
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