With RAID 5 you will always lose the capacity of 1 drive, but as you increase the amount of drives on the RAID you will still only lose the space of 1 drive. RAID 5 works perfectly well with 3 drives or more. Just a short clarification on RAID 5 & 6 in general terms I've never tried to use a multidock for RAID, although the blurb does say they can be striped But I didn't have success on my one attempt at a RAID on it, and I don't think your needs require a RAID anyway. A Multidock is a pretty cool unit for dropping in SSDs and editing, and moving on. But with the interfaces being faster, and the speed of SSDs, I'm not so sure you are in need of one. If you were doing uncompressed video, you'd need one. I wouldn't think you'd even see that much benefit from it. Next up, I have to ask if you are sure you even need a RAID. Maybe someone else has a positive experience they can share about it. But I thought I did, and it looked like it just didn't work. I scratched my head for a minute, and moved on. The Disk Utility told me it RAIDed the four SSDs, but my capacity didn't increase at all. I tried doing a RAID 0 on one a couple of weeks ago. The multidock only takes SSDs and small format drives. 10 is two RAID 0 's mirrored to each other, so you only have the speed and capacity of two drives. Useful for speed and capacity, but if one fails, they all fail. RAID 0 is a bunch of disks striped together with no rududancy or safety net. With four, your best options are RAID 0 or RAID "10". You really need 6 or 7 to make them a good quality, robust solution. That said, neither work very well with 4 or fewer drives. RAID 6 has taken its slot, though it loses a little capacity in favor of a better parity scheme. But from what I understand, RAID-5 has become "old school" in the world of RAIDs, and is now considered nearly obsolete in design. But since the MultiDock 10G uses SATA 3 (6 Gbps) based connections to the actual drives themselves, the maximum throughput possible to a single drive is even lower, usually around 500 MB/s maximum after accounting for SATA interface overhead (and could be less depending on the drive).I've dealt with a lot of raid configurations, but I wouldn't call myself an expert. USB 3.1 Gen 2 bus speeds are 10 Gbps (1250 MB/s) at the interface level, but due to overhead and other issues, real world maximum performance you can expect at the port level is around 900 MB/s or so. Sometimes this is due to connection related issues and disconnecting and reconnecting the cable improves things.Įven with USB 3.1 Gen 2 speeds, things are never going to be as fast through the MultiDock 10G as with the internal SSD. I've also seen situations where USB 3 capable ports don't always negotiate USB 3 speeds (even when using a USB 3 compatible cable). For example, a lot of USB-C cables designed for charging purposes only support USB 2.0 data speeds as they lack the additional data wires internally to support USB 3 data transfers. Usually the causes of this are some kind of cable or port issue. Although USB 2.0 has a maximum interface bandwidth of 480 Mbps (60 MB/s), due to interface overhead (and a few other factors), have real world transfer speeds in the range of 35 to 40 MB/s, which seems to be inline with what you are seeing. It sounds like the MultiDock 10G is only connected to the computer using USB 2.0 speeds (480 Mbps) rather than USB 3.1 Gen 2 speeds (10 Gbps).
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