rem5618 Posted March 22, 2021 Share Posted March 22, 2021 Hi, im using unraid till some weeks and im very impressed. I installed unraid 6.9.1 on Intel NUC with 1 TB HDD and 1 TB NVMe SSD. The 1 TB NVMe SSD should be used as parity because it isn't supported as array disk. Now i have the following problem, the hdd has 61047660 blks and the NVMe SSD 61047598 blks. As you can see the SSD (parity) is 2 blks smaller then HDD and so i can't use them as parity disk. Is there anyway to use the NVMe SSD as parity disk, e.g. by reducing the size auf the hdd partition size? Unfortunaly i can't change the hardware configuration, that means, the intel nuc can only contain 1x 3.5 HDD and 1x NVMe SSD. Best regards Stefan Quote Link to comment
JorgeB Posted March 23, 2021 Share Posted March 23, 2021 Because of the new partition layout for non rotational devices, partitions will always be small than disks, even if they have the same original blocks, so you can never have a same capacity SSD parity with disk(s) as array device(s). 11 hours ago, rem5618 said: The 1 TB NVMe SSD should be used as parity because it isn't supported as array disk. It's not better supported as parity, SSDs can't be trimmed when used in the array, either data or parity, you can still used them, many people do, including myself. Quote Link to comment
rem5618 Posted March 23, 2021 Author Share Posted March 23, 2021 Hi, thanks for your answer, didn't know this . Does this mean, it isn't supported but it works? As i know, the problem is the "garbage collection" (TRIM) and the associated performance loss? Is this also the case when using the "Dynamix SSD TRIM" plugin? How do you use the SSD? Thanks Regards Stefan Quote Link to comment
JorgeB Posted March 23, 2021 Share Posted March 23, 2021 2 minutes ago, rem5618 said: Does this mean, it isn't supported but it works? It's not officially supported but it woks, with the lack of trim limitation. 3 minutes ago, rem5618 said: Is this also the case when using the "Dynamix SSD TRIM" plugin? Plugin doesn't help, it can't trim array devices. 4 minutes ago, rem5618 said: How do you use the SSD? I have a small SSD only array, parity plus 4 data devices, mostly for testing. Quote Link to comment
rem5618 Posted March 23, 2021 Author Share Posted March 23, 2021 Hi, thanks again. I will try it and with regular backups, i should be save :). Thanks. Regads Stefan Quote Link to comment
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