Quick Answer: Do I need same HDD for RAID?

Do all hard drives need to be the same size for RAID?

The only absolute requirement for matching drive specs in a RAID 10 array is that the drives must be of the same architecture, e.g., all SAS or SATA.

Do RAID 5 drives need to be identical?

Do all drives have to be the same model and capacity for a RAID 5 array? The short answer is No, the drives don’t have to be exactly the same. The longer explanation is that for compatibility reasons, we usually recommend using the same model.

Can I mix hard drives in RAID?

Must hard drives in a RAID array be identical? No. It is perfectly valid to use hard drives from different manufacturers, model numbers, sizes, and rotational speed (spindle speed or RPM).

Can RAID 10 use different size drives?

You can however use the excess space in another array, if the excess space is the same size or larger as the additional array. So in short, yes, you are correct: Only half the space on the 2TB disks will be used.

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Which is faster RAID 5 or RAID 6?

In general, RAID 6 offers greater data protection and fault tolerance than RAID 5, but at the same time, it’s write performance is slower than RAID 5 because of double parity, though the read operations are equally fast.

Can you use RAID 5 with different size drives?

Yes, in a RAID5 array the smallest physical volume (disk or partition) will define the size of the array, so any extra space on larger volumes in the array is not used. You should not see any issues with drives of different speeds other than the fact the the slower drive(s) will reduce average performance.

Can you RAID 0 two drives?

RAID 0 is the only configuration that doesn’t really fit into the RAID definition since there’s no redundancy unless you setup RAID 0+1. However, you should be fine running those 2 drives in a RAID. You can run different size and speed drives in a RAID configuration.

What is faster RAID 1 or RAID 5?

Raid 1 has a relatively slow write speed, slower than using a single disk. RAID 5 has a write speed much faster than a single disk, but lags slightly due to the need for creating parity data. RAID 1 has a higher write penalty as it has to write a copy of all data for every additional disk present.

Can RAID 6 use different size drives?

Honorable. It can be done, however the raid size is restricted to the smallest drive in the array. It’s generally frowned upon to use different drive types, let alone sizes for RAID, but it can be done if you don’t mind sacrificing the extra space on your larger drive to do it.

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Is RAID 10 better than raid5?

The biggest difference between RAID 5 and RAID 10 is how it rebuilds the disks. … Compared to RAID 10 operations, which reads only the surviving mirror, this extreme load means you have a much higher chance of a second disk failure and data loss. Remember to always use identical disks when creating a RAID 10 array.

How many drives can I lose in RAID 10?

A standard four-disk RAID 10 setup can only withstand one drive failure in each mirrored pair of disk drives. Otherwise, total data loss occurs.

Which is better RAID 1 or RAID 10?

Depending on the location of the drives, a RAID 10 configuration can recover from multiple drive failures while using the same percentage of data drives as RAID 1. It can also provide increased performance due to the increased number of spindles in the RAID group.