WriteBack on PERC 3DC solved

[Patrick_Boyd at Dell.com]

Actually, 198X is broken. 199A fixed a bug where VD's were being shown in Writeback mode despite being in write through. 

-----Original Message-----
From: linux-poweredge-bounces at dell.com [mailto:linux-poweredge-bounces at dell.com] On Behalf Of Grzegorz Sójka
Sent: Sunday, September 23, 2007 2:44 PM
To: linux-poweredge-Lists
Subject: Re: WriteBack on PERC 3DC solved

J. Epperson wrote:
> On Sun, September 23, 2007 07:58, Grzegorz Sójka wrote:
>> After upgrading FW to 199D I'm not able to force my PERC 3DC RAID
>> controller _without_ battery module to operate in WriteBack mode. I
>> tried to change the settings using BIOS, megarc and megamgr but the
>> controller simply ignores it. On ancient FW F320 it was posible. Is
>> there any trick force the change? If not then what is the most recent
>> version of FW which allows that?

Answer: FW ver. 198X works fine.

>>
> 
> Can't help, don't think I've ever seen a 3/DC in the wild _without_ the

Yes, my PERC is also equipped with BBU but since I use the machine as a
workstation it is disconnected. The power on-off cycle is typically few
hours, way too short to charge the battery. In fact it is not even Dell
machine. In my PE4400 server I'm using PERC 3/Di at the moment.

> BBU.  But a question for my benefit:  what method did you use for the FW
> update to 199D?

The _only_ way of upgrading FW/BIOS I'm using if bootable floppy.

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