In Figure A, this would mean that, if all 12 disks were in a single RAID 5 set, you'd be left with 11 disks worth of capacity. So on this array raid 5+spare or raid 50 is more than sufficient. Sure enough, no enterprise storage vendor now recommends RAID 5.

It also requires a minimum of 6 disks. Here's the situation in my current backup server: LUN1: RAID 50 (NPG: 2) 24x 500 GB SAS 7200 rpm HDD 1x hot spare LUN2: RAID 6 (ADG) 25x 500 GB SAS 7200 rpm HDD no hot spare So which one is better for backup server ? Raid 50 can be good because it lets you customize how redundant you need the parity to be (by having smaller+more raid sets vs larger+fewer raid sets). In a RAID 5 array, a … Because there are multiple RAID levels that have good performance, such as RAID 10 and RAID 6 , it will often come down to a tradeoff based on your organization's needs. This makes it considerably more expensive to implement. I wouldn't recommend raid 6 for any array larger than 10 disks.

The boards supporting RAID 50 are the 3ware Escalade 9500S-8, the LSI MegaRAID SATA 150-6 and the RAIDCore 4852. If those are your choices, and assuming that RAID 1 won't cut it for obvious reasons, RAID 5 + HS is definitely the choice to take unless the data is really low priority than skip the HS and grab the space/performance advantages of pure RAID 5. Although I would love to hear the argument against 5 and 50 some day. Now it's RAID 6, which protects against 2 drive failures. RAID 10, so-called RAID 1+0, is a combination of RAID 1 and RAID 0. Like RAID 5, RAID 6 also splits data into blocks and distributes the blocks across the disks in the array. A Brief Introduction: RAID 6 vs RAID 10 RAID 10. RAID 5 requires 1/#disks worth of space per RAID array. Three years ago I warned that RAID 5 would stop working in 2009. My new D2600 only contains 12x 3 TB 3'5" SATA HDD, I have configured it as RAID 5 for capacity purpose. Huge loss of space. RAID 10 gives me 2TB. I've got question for the performance between RAID 50 (NPG: 2) vs.

RAID 6. In comparison to RAID 50, RAID 10 requires just 4 disks to configure. It needs at least four drives (an even number). That means it requires at least 4 drives and can withstand 2 drives dying simultaneously. Read speed is as fast as RAID 5, but write speed is slower than RAID 5 due to the additional parity data that have to be calculated. 5: Data Recover: Recovery from failure is slow because RAID 5 need to calculate parity information to rebuild the failed array. RAID 6 is an unique feature of the Areca ARC-1120. Carlos Ijalba IT Systems Director. With 50, you need to pay attention to the probabilities and … CERTIFIED EXPERT.