RAID (redundant array of independent disks) is a method of using multiple hard disk drives to act as one. RAID is used to increase hard drive speed and storage capacity, prevent data loss in the event that one of the disks in the array physically fails, or both. As far as the operating system concerned, a RAID array will appear to be a single logical drive. RAID uses a method called striping in which the drives are broken down into small partitions. These partitions, called stripes, are distributed such that each successive stripe is on a different drive.
Important: There are many different…
What if your computer memory system crashes, and you don’t have any backup of your data stored elsewhere? Crashing of the hard drive puts one in a difficult situation. The RAID (redundant array of independent disks) data storage system is designed in such a way that data recovery is possible even if storage devices fail. The RAID disks (tape disks or magnetic disks) are so arranged that it allows maximum redundancy (mirroring or repetition). Some RAID architectures are designed for faster read operation, some for faster write operation, while some are designed for both faster read and write operations. Hence,…
I don’t need the redundancy of RAID five and want more usable disk space. Can I configure the NAS 4000 Series without RAID 5?
Yes, you can the NAS 4000 Series for JBOD (just a bunch of disks), spanned, spanned and mirrored, or striped disk configurations.
All WD ShareSpace drives support Spanning, RAID-0 (Striping), RAID-1 (Mirroring), and RAID-5 (Redundancy with parity). Each RAID mode may or may not be available for usage based upon how many internal hard drives are installed in the enclosure.
Please Note: Depending on how the WD ShareSpace RAID is setup, that RAID array may not be recoverable from a drive failure.
Qty of 2 – 1TB internal hard drives:
- RAID-0 – 2TB – (Not recoverable)
- RAID-1 – 1TB – (Recoverable)
- RAID-5 – (Not Supported)
Qty of 3 – 1TB internal hard drives:
- Spanning – 3TB – (Non recoverable)
- RAID-0 – 3TB – (Non recoverable)
- RAID-1 – (Not Supported)…
Advantages of RAID
RAID is an acronym for Redundant Array of independent Disks. With RAID enabled on a storage system you can connect two or more drives in the system so that they act like one big fast drive or set them up so that one drive in the system is used to automatically and instantaneously duplicate (or mirror) your data for real-time backup.
There are three reasons you might want a RAID system of drives.
- You need tons of storage space and you need it to be fast. (RAID 0)
- You want to instantaneously and automatically backup your data. (RAID 1)
- You want both. (RAID 5)
Which…
The NAS 4000 Series has a software controlled RAID 5 disk array, Dual 10/100 NIC’s, and two independent, mirrored Operating Systems.
The NAS 4000 Series is a file server. Maxtor highly recommends you make backups of the NAS, as you would with any server.
How do I…
- Identify a failed RAID 5 Volume
- Remove/Replace a Failed Drive in a Failed RAID 5 Volume
- Recover a RAID 5 Volume
…using Seagate’s BlackArmor Manager?
Seagate BlackArmor NAS 440 products come with a RAID 5 Volume by default to ensure data protection. If one drive fails, a user can:
- Easily identify the failed drive using the BlackArmor Manager and other tools.
- Remove the defective drive and replace it with a functioning drive provided by Seagate.
- Use BlackArmor Manager to claim the replacement drive and recover the RAID 5 volume.
All of these things can be accomplished while the BlackArmor NAS 440 is still…
A volume with RAID 5 is built from a minimum of three disk drives and uses data striping and parity data to provide redundancy. (Parity is extra information that is used to re-create data if a disk drive fails. In volumes with RAID 5, parity data is striped evenly across the disk drives with the stored data.) Parity data provides data protection, and striping improves performance.
The following provides the steps necessary to create a RAID 0/1/5/10/Spanned/JBOD volume. It is assumes the following:
- You have backed up any/all critical data off of the BlackArmor NAS Server.
- All previous unneeded volumes have…
I don’t need the redundancy of RAID five and want more usable disk space. Can I configure the NAS 4000 Series without RAID 5?
Yes, you can the NAS 4000 Series for JBOD (just a bunch of disks), spanned, spanned and mirrored, or striped disk configurations.
RAID (redundant array of independent disks) is a method of using multiple hard disk drives to act as one. RAID is used to increase hard drive speed and storage capacity, prevent data loss in the event that one of the disks in the array physically fails, or both. As far as the operating system concerned, a RAID array will appear to be a single logical drive. RAID uses a method called striping in which the drives are broken down into small partitions. These partitions, called stripes, are distributed such that each successive stripe is on a different drive.
