Question about Tyan M7902 (m7902tarosodimm) SCSI Controller

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How to make raid 10 with Tyan M7902?

I have 2 cable data (channel scsi 1 & 2) and i cant make it raid 10 as ive put each channel with 2 hardrive, does it mean to make raid 10, all hardrive must be within 1 channel cable?

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Re: how to make raid 10 with Tyan M7902?

Yes. Unless you're using HP-Ux's LVM or some other Logical Volume Management software package, the controller can only perform mirroring on the same channel. I see no value in running Raid 10... all it does is strip the mirrored data on the 2nd set of disks. It uses the same overhead as mirroring and offers minimal benefit with the potential for more overhead in slowed bandwidth. Make it simple and just mirror the drives with Raid 1.

Posted on Sep 08, 2007

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Hi, within the previous 12hrs my e-series server bombed out - there are two issues (1) Memory DIMM malfunction (2) serveRAID-7k error 2807... I removed the faulty memory DIMMs, but the RAID error still...

You can recover RAID data from hard drive with RAID recovery software easily.
Tenorshare Data Recovery Enterprise is a comprehensive data recovery software that supports RAID recovery for RAID 0 and RAID 5. Lost data in RAID 0 and RAID 5 can be deeply scanned and restored immediately. Meanwhile, files and folders in RAID 0 and RAID 5 can be copied to other partitions directly.

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Ooh, ooh, I know this one. Is it an x346?

Did you also get "error 2807-01 Controller Onboard detected an internal error error 2200
CPPRHTS1&1 FAIL DATA: 035-253-001-20100309-58-RAID"?

Get a 71P8644. I've had two servers fail identically as above. Solid fixes.

Or use a Search Engine if your server/symptom differ.

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1 Answer

I have IBM eServer with ServeRaid-7K on board controller and have 3 SCSI 73GB hard drives configured in RAID-5 array. Hard Drives are running critically low on space and I bought 3 300GB scsi Ultra320 hard...

First, buy an external storage device, at least 80GB (although it's currently difficult to find any _smaller_ size!) and make a file-by-file, folder-by-folder, backup of your 73GB of "data".

Second, buy another external storage device, and do a Google-search for "drive image freeware".
Pick one of those applications, and do a "image" backup to this second external storage device.

Third, disconnect the 3 "old" drives, carefully label them, and set them aside.

Fourth, connect the 3 "new" drives, delete the old RAID-5 array definition,
and create a new RAID-5 array definition.

Fifth, do an "image restore" from the second external storage device to the new array.

If you have any problems, all you need to do to "back-out" is to:
* disconnect the "new" drives
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and you're back to the "old" configuration.

Dec 07, 2010 | IBM ServeRAID-7k Controller (71p8642) SCSI...

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Set up raid 1 with win xp--------47JFR controller

load the software driver for this card
then open the window of this software by opening it from program files , you would see help on this soft ware . select raid 1, else is done auto .you must have minimum two drives to make a raid

Sep 12, 2009 | Dell 47JFR - (Refurbished)...

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Not getting a drive letter from Compaq SCSI RAID setup

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If you do see the drive in the lower half of the screen, you need to initialize the drive either as dynamic disk or basic disk. Then you need to add a new partition and format it.

Good luck.

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Pci ide controller for third hard disk

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If the card do not enter regularly in CMOS settings for the raid then this card is defective.

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Two disks appear with multiple addresses on DEC 3000-900

Looks like it can't find the right disks/partitions to boot from.
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installed ....

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my guess is no but since i haven't dealt with this type of server i'm going to suggest you go to hp.
if you just goto and search on live chat and a link will come up.. they should be able to help unless it's too old since i'm not sure what generation we are on now..

good luck, hope this helps a little..d

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