Question about Quantum Guardian 4400 120 GB Hard Drive Array

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Help please to restore the failed raid

Hi, This is Vishwa from Oman. We have Quantum Guardian 4400 Device. Raid 5 has been configured on the device. Last week one of the Hard disk has been failed. Later i have replaced failed disk with new one , but the raid 5 failed . Raid rebuild / repair option is not getting enabled. I am getting only the option - Delete array. Currently all the harddisk are working fine, but it looks like all my data gone. This Box has some imp data , and no backup also. Please Help. Thanking you in advance Regards, Vishwa

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Re: Help please to restore the failed raid

Well if your data is gone at this point, you mines well just proceed with rebuilding a new RAID 5 set with your replacement drive. Even if one drive fails in a RAID 5 set, your logical drive should still be accessible. Goodluck.

Posted on Aug 17, 2007

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Backup slow

You don't specify whether previously on your USB it was the same lacie external or whether it was a different external drive. It sounds like you were using a different external drive, most likely a single drive.
You've specified that you've got your lacie setup in raid 5. Raid 5 gives a very good read spead and a good redundancy for incase a drive fails, however it's write speed is very very slow.
It will be much slower than a single drive on USB for writing to it (i.e. backups), but you should see a huge performance boost in reading from the drive than your previous usb.
If you need it to be faster, you would be better suited looking at configuring it for one of the following raid setups:
Raid 0: striping (not recommended for backups) - data is split over all drives, however if 1 drive fails you lose all data.
Raid 10: striping + mirror . half the drives are striped (like above), but the other half mirror the striping half so if one drive fails there's a backup of it. You only get half the disk space though, so if you have 4 x 1Tb drives, then you'll only get 2Tb of space.

Apr 06, 2010 | LaCie 2500 GB Network Storage Server


Implementing RAID 1 in Windows Server 2003 using VMware!

This is a simple tutorial about creating a RAID 1 in VMware for IT people. VMware, well I think you know already about Server Virtualization.Its a well known product.
Let's discuss about some of the techniques related to Load Balancing or Fault Tolerance.....The Disks here used are Dynamic Disks.
RAID - Reduddant Array of Independant (Not much Inexpensive these days. That term suites no more) Disks. There are two types of RAID:
  1. Software RAID - Implemented via the OS or with the help of a Software. Not much efficient however.
  2. Hardware RAID - Hardware level RAID. Much more efficient and Fault Tolerant.

The idea to use a set of disks or an array is to increase the performance (Load balancing) and provide Disaster Recovery (Folt Tollerant).
RAID 0 - StripingThe fastes of all the RAID configurations. This is known as Striping. Striping is the process of Writing data Sequentially to or Read from more than a single Hard Drive (or a Storage Device).First the data is broken up into chunks or blocks. Then the writing process will be accomplished. The process of writing will be done Simultaneosly onto Strips. The performance of reading and writing increases because all the Heads are working all the time
RAID 1 - Mirroring,DuplexingAs the name implies, it creates a Mirror of one Disk onto another. Data will be written to Both the Disks. So if one disk fails other one can be mounted or it can be used to Restore data.There can be a deadlock how ever. The Disk Controller. RAID 1 uses a Single Disk Controller thus a Single point of failure.We can avoid this easilly with the use of Disk Duplexing which means usage of 2 Disk Controllers.
RAID 2 - Striping with ParityThis is similar to RAID1 but with an added feature known as Parity. One disk - typically the last one - is used to store somethings called Parity bits. With the use of these Parity Bits, the lost data can be easilly generated. This uses Logical XOR Operation. When writing, it XORs every data written onto HDDs and stores in the Parity Disk. When one Disk fails, thet PD is XORed with other Data bits on the functioning Hard Drives. This is a very effective technology in terms of Fault Tolerance. But Performance is pretty low.
RAID 3Similar to RAID 2 but instead of using Strips which are in Bits this technique uses Strips in Bytes. That increases the performance over RAID2.
RAID 4Strips data (Blocks) and uses a Parity Disk. Requires at least 3 Drives. Not widely used.
RAID 5The most popular method. Requires at least 3 Disks. Disks are used to store Parity data as well for each perticular drive. Data Stiped in Bytes (uses block-level striping with parity). Supports Unlimited number of Drives. Failure rate Drops when the number of devices increas.High speed reads can be performed. But writing is pretty slow in this approach.
Note: The non-standard RAID levels 5E, 5EE and 6E extend RAID 5 and 6 with hot-spare drives. Other non-standard RAID levels include: RAID 1.5, RAID 7, RAID-DP, RAID S or parity RAID, Matrix RAID, RAID-K, RAID-Z, RAIDn, Linux MD RAID 10, IBM ServeRAID 1E, unRAID, and Drobo BeyondRAID.
So how are we going to implement such a structure in VMware?That is quite easy. This is an example of Disk Mirroring. Each disk has to have Similar Capacity.
  1. Click on "Edit Virtual Machine Settings".
  2. Click on Add ->Next-> Create new Hard Disk.
  3. Select SCSi.
  4. Give a Suitable Disk Capacity for new Disk.
  5. Give a "Name" and Browse the storage location.
  6. Click on Finish.
  7. You have to Repeat the steps to create the number of Disks that you require. You have to have 2 Disks. Do not use the Main Drive. Use Separate Disks.
  8. Click on OK.
  9. Click on "Power on this Virtual Machine".
  10. After booting up the machine, its the time to implement the Mirrors.
  11. Log in.
  12. Right click on My Computer and select "Manage".
  13. Click on "Disk Management".
  14. Get the "Convert Disk Wizard".
  15. Select the 2 disks (tick on the check boxes).
  16. Click "Next -> Finish
  • Implementing RAID1
  1. Right click on the Disk n which your first added drive (n = the number).
  2. Select "New Volume".
  3. Select the option "Mirrored".
  4. Click on "Next".
  5. Add the Disks from the left hand list box to the right hand list box (the two drives that you have created).
  6. Click on "Next".
  7. Assign a Drive Letter.
  8. Format using NTFS. Make sure you provide a "Volume Label".
  9. That's all what you need to do!
  10. Wait until the Volumes get formatted and Synchronize.
  11. Implementation of the other technologies are similar to the above procedure.
Hope you would enjoy this tutorial.Thanks!

on Jun 30, 2010 | Network Storage Systems

1 Answer

Switching from 'Mirrored' to 'Striping'?

I don't understand your description. sorry. But if you are switching over from Mirror to stripping then you will surely loose your files. Switching raid configuration will also redo the hard drive relativity and will reformat the drives automatically. If your backup is a server then you need to go to system bios and configure the raid from there. I suggest backup the backups first before you do it. If your backup is an external hard drive then go to its http settings and configure it there. It will surely format your drive.

Dec 08, 2008 | GTech G-TECH 907205-01 G RAID 2 500GB...

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Need Infrastructure Hint

If you need to store this data for several years, it's going to be a huge machine.

I solved a similar issue by using a standard PC and fill it with disks, and then run Freenas on it. It's BSD based, gives you NFS, SMB/CIFS, iSCSI, FTP, HTTP/WebDAV, Apple, ... connectivity in an open source package, ready to go, easy to manage. it supports doing software Raid 5 with a bunch of disks, so stable and secure. I even lost a disk last week, and replaced it with another one. After 2h the system was 'OK' again...

If you really need huge storage capacity, go for a 'standard' storage server (supermicro for instance) that can store 24 or more disks... You have them in several brands, and the SuperMicro ones aren't that expensive.

Put in a bunch of inexpensive disks (500GB SATA-II disks are really affordable these days) and create a RAID5 array out of all these...

If you want to be even more secure, go with hardware Raid controllers. We use 3Ware/AMCC controllers all the time.

If you got the money, Sun just released a couple of 'Storage Servers' in their 7000 series... Go check them out...

Nov 13, 2008 | San Network Storage Systems

2 Answers

How to recover data from lacie etherdisk when it does not keep a network conntection.

I'll have to look into it a little more but off the top of my head I would say that the nic may be going bad or some other component of the etherdisk. You can try opening it up and putting the hard drive into an enclosure and connecting it to a pc via usb to get the data, you can also then share the usb drive and use it over the network, however removing the hard drive may void any warranty you may have. If the hard drive is in fact bad then you should be able to replace it and then continue to use the device. I'll get back to you when I get more info about the device.

Sep 21, 2008 | LaCie Ethernet Disk (300788) 1000 GB...

5 Answers

Nas SCM400 not working

The reason that it goes into recovery mode is because RAID5 is not striping so it has to rebuild the drives to be compatible with RAID5. I used 1TB drives and the 'recovery' took about 16 hours. It would be faster on smaller drives.

This is not a fault in the design, it is how RAID5 works.

Aug 23, 2008 | VisionMan VisionVault 4TB Smart NAS...

1 Answer

Different RAID configuration?


The first point to note is that this unit does not support more than 1.6TB total disk. (4 x 400GB drives) This is stated in the manual which is on the CD that came with the unit. You cannot configure a mix of RAID1 and Linear (JBOD) drives, so you plan will not work.

Jun 18, 2008 | Network Storage Systems

3 Answers

Qwanum guardian 4400 server type 480 GB

i had the same problem with a NAS device. I opened it up and removed the battery and all power sources. I then waited a few minutes and put everything back. The system reset to factory defaults. It now works for me.

I later found out the unit has three ethernet ports. and if the settings are incorrect then the "Gateway" is not found. You may want to connect it directly to a router and see if it gets an ip.

I've tried hyperterminal and it didnt work. There are too many parameters that can interefere.

Dec 24, 2007 | Quantum Guardian 4400 120 GB Hard Drive...

2 Answers

Raid 5 crashed

Hi Chris,

How many drives are part of the array and what type are they? Are the drives making any unusual sounds like clicking or screeching? If not, then you should be able to recover the data. If the drives are making clicking sounds, you will probably need a professional data recovery service that specializes in Raid 5 data recovery to help you.

If the controller shows that only 1 drive is bad, you should be able to rebuild it by replacing that drive. If the controller shows all the drives are bad, then it is most likely a problem with the Raid 5 controller itself. In this case, you could try putting the drives in a working version of the same enclosure/controller.

Check the obvious also, like loose connections to the drives. Whatever you do, dont force a rebuild as this will probably result in permanent data loss.

Wesley Gill
Gillware Inc.
Raid Recovery Info

Aug 28, 2007 | D-Link DNS 6040M (DNS-6040M) Hard Drive...

1 Answer

Hard drives freezing up

Damaged drive controller on HDD a possibility. Pull drive and test as a slave to rule out a bad RAID controller. Let me know if the drive is failing under SMART setting in system BIOS upon boot.

Jun 22, 2007 | Iomega NAS P415m 180 GB Hard Drive Array

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