Question about G-Technology 1000GB Raid 0 Triple Interface (WMM380979)

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Speed of 1T Raid

I have your new 1T raid product and it is a nice piece of equipment except for 2 items

1) it is substantially slower than any of my WD hard drives. Is this a characteristic of the Raid-2 configuration? I suspect it will not work well as a scratch drive for FC Pro as I had intended.
2) Is there a setup to enable the drive to spool down after a period of inoperation, or do you have to physically turn it off?

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Sorry,

I’m not about to pay for support on a brand new product. If the company won’t respond to my request for input, I’ll simply return the raid for credit.

Thanks,

**** Walters

Posted on Mar 09, 2008

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Drive replacement and rebuilding Raid 1 on a Dimension XPS Gen 2


Did you format the new drive? Formatted size must be the same or bigger than remaining drive.

Mar 07, 2014 | Dell Dimension Computers & Internet

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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!
-Lasitha

on Jun 30, 2010 | Computers & Internet

1 Answer

Drive replacement and rebuil ding Raid 1 on a Dimension XPS Gen 2


Hmm,tricky, I think your best bet would be to save old drive and do a complete new programme install hopefully you have the discs, then once setup and running, connect old drive as a backup and transfer data you require, there may be a better way, this is what I would seriously consider.

Mar 07, 2014 | Dell Dimension Computers & Internet

1 Answer

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. http://www.any-data-recovery.com/product/datarecoveryenterprise.htm

Aug 29, 2011 | IBM ServeRAID-7k Controller (71p8642) SCSI...

2 Answers

I have a Dell Optiplex 170L mnitower. It has one IDE and one SATA port. I have connected a 1 TB drive to the sata and disconnected the ide drive that came with the system. No I am thinking, what if I add...


Hi there! You don't actually need a IDE to SATA converter. If you purchase a RAID 1 card, it gets hooked up to your computer via PCI or PCI-E. The RAID card will have at least two SATA ports on it - those are what you use to create your RAID. The sata port and ide port on the computer will not be used in the raid1 configuration. If you're going to go ahead with this, I'd recommend trying to find the exact same brand and model of drive as the first one you have. Also, keep in mind that creating a RAID 1 array requires formatting BOTH drives. Your Optiplex 170 only has PCI ports, so this may be a viable RAID card. It is fairly inexpensive, but will do the job. http://www.newegg.com/Product/Product.aspx?Item=N82E16816132001&cm_re=PCI_RAID-_-16-132-001-_-Product If you need any more help/advice let me know! Alex

May 30, 2011 | Computers & Internet

1 Answer

Dell XPS w/Mirrored drives. No C drive when using boot disk.


As RAID uses block for block copy, a re-sync when adding in a new mirror on RAID 1 will take some time, and system performance will be affected during that time period. There is no indication in windows if the rebuild is complete as this is being done on a hardware level by the controller. Both Raid 5 and RAID 10 have added benefits , but alos require more storage (a lot more in case of RAID 10 as you will have effectivly 3 spares for 1 data.) Raid 5 has the best space/protection pay off, but will be slightly slower than both RAID 1 and RAID 0 as parity has to be calculated for each write. As caffineshark states your best option is to use a combination of the methods we have described:

1) Use the two SATA disks as RAID 0 for performance and reliability.
2) Make backup images of the boot volume using Drive Image / Ghost and store on external USB IDE drive, and then offsite.

If you make an image in the USB drive, make sure you run a verfiy of the image after creation to make sure it's valid.

This should allow you to restore in a DR sutuation, but also give you some decent HDD crash protection.

Jan 29, 2010 | Dell My XPS M2010 Notebook

2 Answers

I have hp proliant with raid 1+0 .I have 2 hard and usr in option


Sometimes shortened to RAID 10, RAID 1+0 is a particular combination of two different RAID levels: mirroring (RAID 1) and striping (RAID 0). The appeal of RAID 1+0 is simple: mirroring gives you the highest level of availability RAID offers, with the fastest rebuild times when a disk fails; while striping - using the proper chunk size - is the basis for high-performance I/O.

Jun 09, 2009 | HP ProLiant DL380 G4 Server

1 Answer

About SCSI


Replace the hard drive with a drive that is the same type and the same size, or larger. It will rebuild itself.

By same type I mean that the connector on the back of the drive and the speed of the drive interface must be the same. If the new drive spins at a different rate it will not create a problem, except that if it is slower it will make read/writes slower. If it is larger it will only use part of its capacity, matching the capacity of the other drives.

Note that if you were to replace all drives with larger drives (one at a time) the capacity of the entire array would be the same as the original. If you want a larger array it must be built from the start with that larger capacity.

Take out the bad drive. If you can get the exact same drive, do it, otherwise look it up on the manufacturers web site to find out size and type.

While there are a few possible RAID configurations that you could be using on that server, the chances are overwhelming that it is RAID level 5 that you are using. This RAID level is tolerant of a single drive failure. If you lose another drive before your new drive rebuilds your data will be lost. Hopefully you have a backup.

RAID 5 stripes the data and the parity data across all available drives and when a drive fails, the missing data is rebuilt on the fly from the parity data. When a replacement drive is installed the parity data is used to rebuild the data that belongs on that drive. The advantages of RAID 5 are fault tolerance (of a single drive) and speed because each drive only has to provide or write its portion of the total data being accessed or written.

May 26, 2009 | Acer Altos G710 Server

2 Answers

Unable to see RAID 5 config on Asus kfn32-D SLI/SAS MB


NVIDIA RAID does not support > 2TB (18xxGB) arrays. It will NOT show up properly in Windows.

Feb 20, 2009 | ASUS KFN32-D SLI /SAS 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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