RAID different SSD's?

[IsFyx]

Will it work to set up a RAID 0 with a 240GB OCZ Trion 100 and a 256 GB Samsung EVO 830?

If not, why? And if it does, is there any reason not to?

[LynxThe1st]

Don't think so, I think they need to be the same size

Don't rely on taht though, I don't know shit about raid

someone more experienced will probably know more

[leadeater]

7 minutes ago, IsFyx said:

Will it work to set up a RAID 0 with a 240GB OCZ Trion 100 and a 256 GB Samsung EVO 830?

If not, why? And if it does, is there any reason not to?

Yes you can, but you'll only be able to use 240GB of the Samsung so 480GB total.

[Moonzy]

from what i know

1) the raid will be the size of double the smallest drive (240 + 240(formerly 256))

2) for stability concerns, dont do it, unless you like data loss, raid 0 is already as unstable as it needs to be

[IsFyx]

1 minute ago, leadeater said:

Yes you can, but you'll only be able to use 240GB of the Samsung so 480GB total.

the different r/w speeds wont cause trouble?

[leadeater]

4 minutes ago, IsFyx said:

the different r/w speeds wont cause trouble?

Not really, the array will go as fast as the slowest drive. RAID 0 being inherently not protected and has an increased risk of failing should only be used for non important data, basically use at your own risk. 

[IsFyx]

1 minute ago, Moonzy said:

from what i know

1) the raid will be the size of double the smallest drive (240 + 240(formerly 256))

2) for stability concerns, dont do it, unless you like data loss, raid 0 is already as unstable as it needs to be

My plan is to run 250ish SSDs in raid 0 for OS and programs, and 2TB HDDs in raid 1 for backups and mass storage. Is it so unstable you would recomend against it in that situation?

[Moonzy]

Just now, IsFyx said:

My plan is to run 250ish SSDs in raid 0 for OS and programs, and 2TB HDDs in raid 1 for backups and mass storage. Is it so unstable you would recomend against it in that situation?

if you wanna do raid, i would recommend that you Raid 0 two samsung 850 evo 250gb and do a nightly backup of the array to two 1TB drive in Raid 1

 

personally i would just go with one SSD and one HDD

because an average consumer just doesnt need more than this `-`

 

and do weekly or monthly backup to a NAS or something (preferably offsite)

[IsFyx]

2 minutes ago, Moonzy said:

if you wanna do raid, i would recommend that you Raid 0 two samsung 850 evo 250gb and do a nightly backup of the array to two 1TB drive in Raid 1

 

personally i would just go with one SSD and one HDD

because an average consumer just doesnt need more than this `-`

 

and do weekly or monthly backup to a NAS or something (preferably offsite)

I'd rather go for two Trions then, since i have one already. And the HDD RAID 1 is kind of a must, as it will be my offsite backup for my work computer

[Moonzy]

3 minutes ago, IsFyx said:

I'd rather go for two Trions then, since i have one already. And the HDD RAID 1 is kind of a must, as it will be my offsite backup for my work computer

well i would suggest against raid 0 any day unless you're some sort of enthusiast who doesnt care about data

 

if you want faster drives, get m.2/pcie, because raid 0 is unstable af

[leadeater]

14 minutes ago, IsFyx said:

My plan is to run 250ish SSDs in raid 0 for OS and programs, and 2TB HDDs in raid 1 for backups and mass storage. Is it so unstable you would recomend against it in that situation?

It's not unstable no, I ran two 840 Pro's in RAID 0 for ages. It's just that if 1 disks fails or has an issue all data is lost so you are doubling your risk, still only small risk but something to keep in mind for where you place your data.

[leadeater]

Also RAID 0 SSD's doesn't actually increase real life performance so if this is the reason for doing it don't, increased disk space on a single volume is the only reason to do it. It is much better and safer to buy a single large SSD.

[IsFyx]

1 minute ago, leadeater said:

Also RAID 0 SSD's doesn't actually increase real life performance so if this is the reason for doing it don't, increased disk space on a single volume is the only reason to do it. It is much better and safer to buy a single large SSD.

Why is that? Whats the bottleneck?

[leadeater]

1 minute ago, IsFyx said:

Why is that? Whats the bottleneck?

Most disk I/O operations are small and would only hit a single SSD in the array. Beyond that you really only get the benefit when copying large files to another similarly fast disk. Basically it looks awesome on a disk benchmark but that's the only time you'll see that kind of speed.

 

A single faster SSD is more of the time faster than two SSD's in RAID 0. Think of it like a multi lane road, your car can only ever be in 1 lane. A 100 km/h lane is faster than two 90 km/h.

[IsFyx]

4 hours ago, leadeater said:

Most disk I/O operations are small and would only hit a single SSD in the array. Beyond that you really only get the benefit when copying large files to another similarly fast disk. Basically it looks awesome on a disk benchmark but that's the only time you'll see that kind of speed.

 

A single faster SSD is more of the time faster than two SSD's in RAID 0. Think of it like a multi lane road, your car can only ever be in 1 lane. A 100 km/h lane is faster than two 90 km/h.

But would you not get a preformance boost when reading from the disk? faster loading times and so on. I cant imagine there would be any bottlenecks between the raid array and the RAM? or is there a flaw in my thinking here?

[leadeater]

1 hour ago, IsFyx said:

But would you not get a preformance boost when reading from the disk? faster loading times and so on. I cant imagine there would be any bottlenecks between the raid array and the RAM? or is there a flaw in my thinking here?

If you are reading a large file yes, also remember if it is a game as it is reading the file the CPU is loading the game using this information so it's actually only going to read as fast as it can use the information.

 

This is why you see the pure performance using a benchmark tool as the CPU will not bottleneck the operation but not in applications.

 

Honestly I wouldn't worry about it too much, if you want to do it then do it . A single SSD is just cheaper and safer but there is nothing wrong with trying to get the best performance possible, many prebuilt gaming computers and laptops come with RAID 0 SSD's now.