If this only has sata 3GBPS then having 1 SSD or 4 SSDs won't matter speedwise; just one of them is capable of hitting the 250 MB\sec or so barrier.
Also, who wants a RAID0 for an OS drive? It will die within months, guaranteed -- a few media errors and you're done. I think engadget is getting these specs wrong...because this doesn't make one bit of sense.
@JayD16 uh....yeah? My point was that ONE ssd breaks the sata-2 barrier...so having 4 of them in a raid0 on the same sata controller is worthless...it will go 250 MB\sec for reads and writes when it could be going 4 times that, even more. Also, since it's RAID0, if one of those drives has even ONE bad stripe, the entire volume dies...so I do not see the point of ths.
@surgex "Also, since it's RAID0, if one of those drives has even ONE bad stripe, the entire volume dies...so I do not see the point of ths."
Also, thats false. If one 1/4 of one strip dies in one chip then it affects the other 3 parts in the other chips. If one whole chip dies then yes, it ruins the other four.
I'm not sure what you originally meant to say but you're certainly using the terminology incorrectly.
@surgex I understand how striping works... A four disk array has many many stripes and each disk only holds 1/4th of each stripe.
The "failure of a single stripe" almost has no meaning. You're basically suggesting that the same sector on each drive somehow became unreadable due to unrelated causes.
Even if that were the case, its doesn't affect the other stripes on the drive. If a single disk in the array dies, it kills the volume, not a single stripe.
@JayD16 "The "failure of a single stripe" almost has no meaning. You're basically suggesting that the same sector on each drive somehow became unreadable due to unrelated causes."
That's how RAID0 works, dumbass...lol. If one drive has something wrong with it, every single drive in the entire group goes down. Other RAID levels like 3,4,5,6 have parity, where if there is a bad stripe or drive fails, it can be recovered, but RAID0 has nothing.
@surgex Dude...You have no idea what you're talking about.
One stripe DOES NOT affect the entire volume. One section of one stripe affects the other sections of one stripe.
Because of this, if a single drive dies it destroys one section of EVERY stripe and that renders every stripe unusable but the lose of one single stripe has no affect on the others.
Also, it is impossible for "one of those drives [to have] ONE bad stripe" because no drive has a whole stripe.
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If this only has sata 3GBPS then having 1 SSD or 4 SSDs won't matter speedwise; just one of them is capable of hitting the 250 MB\sec or so barrier.
Also, who wants a RAID0 for an OS drive?
It will die within months, guaranteed -- a few media errors and you're done. I think engadget is getting these specs wrong...because this doesn't make one bit of sense.
@(Unverified) RAID 0 helps with write speed as well...
@JayD16
uh....yeah?
My point was that ONE ssd breaks the sata-2 barrier...so having 4 of them in a raid0 on the same sata controller is worthless...it will go 250 MB\sec for reads and writes when it could be going 4 times that, even more.
Also, since it's RAID0, if one of those drives has even ONE bad stripe, the entire volume dies...so I do not see the point of ths.
@surgex What SSDs actually write at 250 MB/s? All I ever see is 80MB/s and a few 100MB/s drives
@JayD16
The Intel X-25E's can do 250 for R+W with latest firmware (one drive)...Theres SAS SSDs that can do 400+ for R+W also.
@surgex
"Also, since it's RAID0, if one of those drives has even ONE bad stripe, the entire volume dies...so I do not see the point of ths."
Also, thats false. If one 1/4 of one strip dies in one chip then it affects the other 3 parts in the other chips. If one whole chip dies then yes, it ruins the other four.
I'm not sure what you originally meant to say but you're certainly using the terminology incorrectly.
@JayD16
When drives are in a RAID, data is "striped" across all drives. The blocks of data are called stripes and they span from drive to drive.
http://en.wikipedia.org/wiki/Striping
@surgex Assuming it can actually do 250MB/s sustained writes, its still $800.
Even if this thing used four $150 64gb chips thats still the same speed, four times the space, and at least $200 less.
@surgex
I understand how striping works...
A four disk array has many many stripes and each disk only holds 1/4th of each stripe.
The "failure of a single stripe" almost has no meaning. You're basically suggesting that the same sector on each drive somehow became unreadable due to unrelated causes.
Even if that were the case, its doesn't affect the other stripes on the drive. If a single disk in the array dies, it kills the volume, not a single stripe.
@JayD16
"The "failure of a single stripe" almost has no meaning. You're basically suggesting that the same sector on each drive somehow became unreadable due to unrelated causes."
That's how RAID0 works, dumbass...lol.
If one drive has something wrong with it, every single drive in the entire group goes down. Other RAID levels like 3,4,5,6 have parity, where if there is a bad stripe or drive fails, it can be recovered, but RAID0 has nothing.
@surgex Dude...You have no idea what you're talking about.
One stripe DOES NOT affect the entire volume. One section of one stripe affects the other sections of one stripe.
Because of this, if a single drive dies it destroys one section of EVERY stripe and that renders every stripe unusable but the lose of one single stripe has no affect on the others.
Also, it is impossible for "one of those drives [to have] ONE bad stripe" because no drive has a whole stripe.