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RAID Confusion on ReadNAS 628X
I currently have 5 of my 8 drive bays all filled with identical HDDs. They are configured in "X-RAID". I have two questions:
1. What is the difference, if any, between X-RAID and RAID 5?
2. I currently get 4 x my drive size as usuable storage space. If I add a sixth HDD, will I get 5 x my drive size as usuable space, or will the NAS automatically convert to RAID 6?
Thanks!
Hi XrayDoc88,
1. What is the difference, if any, between X-RAID and RAID 5?
X-RAID is the auto-expandable RAID technology that is available only on ReadyNAS systems. It uses the standard RAID levels, RAID 1, 5 and 6.
With two disks, it will use RAID-1. With three disks, it will use RAID-5. With 4 or more disks, you can optionally select X-RAID with dual redundancy(RAID-6).
With X-RAID, you can add storage space without reformatting the drives or moving the data from another location. You may check this link for more information about X-RAID.
2. I currently get 4 x my drive size as usuable storage space. If I add a sixth HDD, will I get 5 x my drive size as usuable space, or will the NAS automatically convert to RAID 6?
If the volume is configured with X-RAID with single redundancy (RAID-5), it will not automatically convert to RAID-6 when you add the 6th drive. Changing to X-RAID with dual redundancy (RAID-6) would require you to destroy and recreate the volume.
Regards,
11 Replies
Hi XrayDoc88,
1. What is the difference, if any, between X-RAID and RAID 5?
X-RAID is the auto-expandable RAID technology that is available only on ReadyNAS systems. It uses the standard RAID levels, RAID 1, 5 and 6.
With two disks, it will use RAID-1. With three disks, it will use RAID-5. With 4 or more disks, you can optionally select X-RAID with dual redundancy(RAID-6).
With X-RAID, you can add storage space without reformatting the drives or moving the data from another location. You may check this link for more information about X-RAID.
2. I currently get 4 x my drive size as usuable storage space. If I add a sixth HDD, will I get 5 x my drive size as usuable space, or will the NAS automatically convert to RAID 6?
If the volume is configured with X-RAID with single redundancy (RAID-5), it will not automatically convert to RAID-6 when you add the 6th drive. Changing to X-RAID with dual redundancy (RAID-6) would require you to destroy and recreate the volume.
Regards,
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