Global Storage

I have been informed that the new FCM4 ​​drives, namely 4.8TB and 9.6TB, have double the performance over the previous generation. Can this be confirmed please as I have used StorM to compare and it shows no difference.

Dear Russel,

In no presentation around FCM4 there was any hint that the small FCM4 had a better performance than FCM3.
If this was the case, all IBMers will tell you about this matter.

So i think the STORM result is reliable

Greetings from your coworker

I have been informed that the new FCM4 ​​drives, namely 4.8TB and 9.6TB, have double the performance over the previous generation. Can this be confirmed please as I have used StorM to compare and it shows no difference.

Hi Martin,

The statement was part of this, but I have noticed it was edited 18 hours ago and retracted :-)

FCM4 Sales Enablement - 2024-Feb-12 (seismic.com)

Dear Russel,

In no presentation around FCM4 there was any hint that the small FCM4 had a better performance than FCM3.
If this was the case, all IBMers will tell you about this matter.

So i think the STORM result is reliable

Greetings from your coworker

I have been informed that the new FCM4 ​​drives, namely 4.8TB and 9.6TB, have double the performance over the previous generation. Can this be confirmed please as I have used StorM to compare and it shows no difference.

That's a link not available to those of us outside the IBM or partner world.  I appreciate all the follow up though.

Hi Martin,

The statement was part of this, but I have noticed it was edited 18 hours ago and retracted :-)

FCM4 Sales Enablement - 2024-Feb-12 (seismic.com)

Dear Russel,

In no presentation around FCM4 there was any hint that the small FCM4 had a better performance than FCM3.
If this was the case, all IBMers will tell you about this matter.

So i think the STORM result is reliable

Greetings from your coworker

I have been informed that the new FCM4 ​​drives, namely 4.8TB and 9.6TB, have double the performance over the previous generation. Can this be confirmed please as I have used StorM to compare and it shows no difference.

I have been informed that the new FCM4 ​​drives, namely 4.8TB and 9.6TB, have double the performance over the previous generation. Can this be confirmed please as I have used StorM to compare and it shows no difference.

------------------------------
Russell Shacklock
IBM Power and Storage Specialist
TD Synnex UK
+447872400311
------------------------------

Hi Russel,

  FCM4 Small and Medium drives run at PCIe G4 unlike the FCM3 S and Medium which run at PCIe Gen3.  However, this is only interesting on platforms that can run PCIeG4 (at this time that is the FlashSystem 9500 in Virtualize, and a couple of ESS models) and on workloads where we were PCIe BW limited to the drives.

So while the individual PCIe BW to the drive has doubled, this does not equate to doubling performance at a system level, nor does it apply to most of our existing systems.

It does however, remove more potential bottlenecks and give us forward compatibility as more platforms move to Gen4.

As with all things in the world of performance, and in the words of Barry Whyte our former performance architect "It Depends".

I hope that helps.

Cheers,

------------------------------
Evelyn Perez
IBM Senior Technical Staff Member
IBM Storage Virtualize Software Architect for SVC and FlashSystem

Original Message:
Sent: Tue February 20, 2024 04:56 AM
From: Russell Shacklock
Subject: FCM4 vr FCM3 performance

I have been informed that the new FCM4 ​​drives, namely 4.8TB and 9.6TB, have double the performance over the previous generation. Can this be confirmed please as I have used StorM to compare and it shows no difference.

------------------------------
Russell Shacklock
IBM Power and Storage Specialist
TD Synnex UK
+447872400311
------------------------------