Question about Dell (PERC4/DC) (PERC4DC)

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Raid battery back up

Hello,

I was wondering what a perc4 raid battery back up does?

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The BBU stores the data that's not yet written to the disk in the write cache. If the power goes out, you don't lose your data.

Posted on Dec 11, 2007

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1 Answer

Is a mpc clientpo 414 all in one a raid system


A RAID is a collection of hard drives, at least 2. This all in one system is a desktop PC
The answer is NO.

Mar 08, 2015 | Seagate Computers & Internet

1 Answer

I have got a 3 disk raid5 IBM xseries Server which does not boot. How can I resque data from these disks?


I'm going to go out on a limb and assume that you don't have a good backup of the data on your RAID array. So, generally speaking, the operating system is probably installed on a separate disk from your raid array (not a guarantee). But if this is so then you should be able to reinstall your operating system and drivers (esp RAID controller) to that (separate) disk and you're off to the races (replace this system disk if necessary). -OR- Depending on the make of your RAID controller you may be able to transplant your RAID controller into another machine and all the original drives along with it, so long as it has a battery backup and you place all the drives in their original order. If there is no battery backup on your RAID controller then DON'T PULL THE PLUG ON THE ORIGINAL MACHINE AND DON'T EVEN CONSIDER removing the RAID controller in any way. If you have any doubts, whatsoever, have someone with experience in RAID arrays do the work for you. It will be well worth it! (RAID arrays aren't for the faint of heart)...

Aug 24, 2011 | IBM eServer xSeries 225

1 Answer

I dont want mirroring


Hello,

Use RAID 1 (Striped) or RAID 5 (Striped w/Parity) Please consult your RAID hardware documents for information on configuring RAID.

Good Luck
C2Solutions

Jun 09, 2011 | IBM x3400 Server

1 Answer

I have Dell PowerEdge 2550 Server. I want to configure RAID, but I can't reach RAID MENU! I have DELL 2550 Server BOOT CD and Dell OpenMenage Server Assistant V7.2. All of them are running, but I...


RAID menu will either be CTRL-A (if you are using the onboard PERC 3/Di) or CTRL-M (if you are using an addin PERC 3/4). If you are not seeing either of these options, then you may not have it enabled in the BIOS. In the BIOS (F2), go to Integrated Devices and make sure that RAID is Enabled. In order to enable RAID, your server MUST have a RAID key, RAID memory DIMM (different from system memory), and a RAID battery.

Aug 12, 2010 | Dell PowerEdge 2550 Server

3 Answers

Ciprico Media Vault 320 RX, in Raid 0 Errors when written too.


When drives start to fail or have bad sectors in a RAID 0, you should expect that. Try running in RAID 3

Oct 27, 2009 | Computers & Internet

1 Answer

CAn I disable RAID on a DEll powervault 770n server


Its called the JBOD RAID option - just a bunch of discs.

I don't know of any system that makes a RAID array an operational imperative, I would say the answer to your question is yes.

RTFM.

Oct 04, 2009 | Dell PowerEdge 2600 Server

1 Answer

Setting up raid 0 on ubuntu 8.10


Hi

Theres a guide to set up software raid for 9.10 on https://help.ubuntu.com/community/Installation/SoftwareRAID.

Let me know if this helps or if you need hardware / fake raid info. If you do have any questions please let me know

Regards
David

Mar 28, 2009 | Canonical Ltd. Ubuntu

1 Answer

I am unable to turn on ide single drive


You need to turn the raid back on and go into the raid utility. Once in the raid utility u should see a function to Break or Delete the raid group. Do this and then the drive should revert to a non-member disk and therefore a single drive. Once this is done u can turn the raid off again.

Feb 02, 2009 | ASUS K8N-DL Motherboard

1 Answer

Slow transfer from SATA II (IDE) drive to 3 SATA II Drives configured as RAID (1). Drives wouldn't format until we installed the OS onto the RAID -- but it wouldn't install completely. We boot from the...


It appears you have made an error with the RAID configuration. RAID 1 is mirroring and requires an EVEN number of drives unless one is a hot spare. Also, RAID 1 is for redundancy and is slower than a single drive or RAID 0. Verify your RAID configuration and make sure you have RAID 1 and not RAID 0 or RAID 5 which can be an even or odd number of drives.

Nov 17, 2008 | Computers & Internet

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