For more information and how to build one check out our RAID 10 wiki section. You get the solid redundancy and storage efficiency of a RAID 6 along with better performance, depending how many you stripe together.
Keep in mind though, as you increase the number of arrays in a stripe, the space efficiency will decrease. Our wiki has more information and instructions on how to build RAID If you need solid performance but also need a level of redundancy, RAID 10 is the best way to go. Keep in mind that you will lose half your usable storage, so plan accordingly! It is important to remember when considering redundancy that a RAID 60 can survive up to two disk failures per array, while a RAID 10 will fail completely if you lose two disks from the same mirror.
If you are still unsure, the deciding factor here is how much storage you need the pod to provide. If you need a lot of storage, go the RAID 60 route. For more information, please review our RAID performance levels. If packing the pod as full as possible is the most important thing to you, you will most likely want to use a RAID 60 with no more than 3 arrays in the stripe 4 in a XL60 , and 2 in a Q What are your thoughts on the ideal RAID?
What has worked best for your storage needs? All other trademarks and service marks are the property of their respective owners. Audio, Voice, and Line Circuits Software. Audio, Voice, and Line Circuits Documents. MyMicrosemi Partner Portal. PoE Support Cases. PoE Collateral. Storage ICs Documents and Software. Timing ICs Documents. What is RAID? Mirroring RAID 1 replicates data on two drives, preventing loss of data in the event of a drive failure.
When a failed drive is replaced, the lost data is rebuilt from the remaining drives. Hardware RAID vs. How does RAID work? Who should use RAID? Pros: » Fast and inexpensive. Multiple HDDs sharing the data load make it the fastest of all arrays. Cons: » RAID 0 provides no data protection at all. Pros: » Highly redundant — each drive is a copy of the other.
Cons: » Cost is high because only half the capacity of the physical drives is available. Pros: » Good value and good all-around performance. Cons: » One drive capacity is lost to parity. Pros: » Reasonable value for money with good all-round performance. Pros: » Fast and redundant. Cons: » Expensive because it requires four drives to get the capacity of two. Pros: » Reasonable value for the expense. Cons: » Requires a lot of drives. Size of array vs size of drives It is a little-known fact that you do not need to use all of your drive capacity when creating a RAID array.
Rebuild times and large RAID arrays The more drives in the array, and the larger the HDDs in the array, the longer the rebuild time when a drive fails and is replaced or a hot-spare kicks in. Fileservers, general storage servers, backup servers, streaming data, and other environments that call for good performance but best value for the money.
Similar to RAID 5, including fileservers, general storage servers, backup servers, etc. Ideal for database servers and any environment with many small random data writes. Good configuration for cases where many drives need to be in a single array but capacity is too large for RAID 10, such as in very large capacity servers. RAID 60 is similar to RAID 50 but offers more redundancy, making it good for very large capacity servers, especially those that will not be backed up i.
Pros Fast and inexpensive. All drive capacity is usable. Quick to set up. Highly redundant — each drive is a copy of the other. If one drive fails, the system continues as normal with no data loss. Redundant with better performance and capacity than RAID 1. Good value and good all around performance. Reasonable value for money with good all-round performance. Can survive two drives failing at the same time, or one drive failing and then a second drive failing during the data rebuild.
Fast and redundant. Reasonable value for the expense. Very good all-round performance, especially for streaming data, and very high capacity capabilities. Can sustain two drive failures per RAID 6 array within the set, so it is very safe. Cons RAID 0 provides no data protection at all. If one drive fails, all data will be lost with no chance of recovery.
Cost is high because only half the capacity of the physical drives is available. One drive capacity is lost to parity. Can only survive a single drive failure at any one time. If two drives fail at once, all data is lost.
More expensive than RAID 5 due to the loss of two drive capacity to parity. In this figure, the large bold numbers represent the striped data, and the smaller, non-bold numbers represent the mirrored data stripes. Data in a RAID 10 array is both striped and mirrored. Mirroring provides data protection, and striping improves performance.
For instance, a array with two GB disk drives and two GB disk drives can create two mirrored drive segments of GB, for a total of GB for the array, as shown in this figure.
A RAID 5 array is built from a minimum of three disk drives, and uses data striping and parity data to provide redundancy. Parity data provides data protection, and striping improves performance. In RAID 5 arrays, parity data represented by Ps in the next figure is striped evenly across the disk drives with the stored data.
For instance, an array with two GB disk drives and two GB disk drives can contain GB of stored data and GB of parity data, as shown in this figure. A distributed spare improves the speed at which the array is rebuilt following a disk drive failure. In this example, S represents the distributed spare, P represents the distributed parity data. The parity data provides data protection, and striping improves performance. RAID 50 arrays also provide high data transfer speeds. In this example, P represents the distributed parity data.
A RAID 6 array--also referred to as dual drive failure protection --is similar to a RAID 5 array because it uses data striping and parity data to provide redundancy. However, RAID 6 arrays include two independent sets of parity data instead of one.
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