RAID Worth It? Perf Gain Qustionable. Failure Rate Doubled.
This is an empirical value, based on several years of experience at my employer company. For instance, www.raid-failure.com estimates (pessimistically, I might add) the 1-year and 5-year survival rates of one drive as 98 percent and 70 percent, respectively, and the survival rates for two drives These are mostly IOP based and wouldn't benefit. Is the price difference worth the speed? have a peek here
RAID5 sucks for performance, but the very nature of RAID1 will actually mean an increase in read performance (since files can be read from either disk). Thus, any write to a RAID of this level means a unison seek of the whole stripe set, and essentially a read followed by some crunching and then write. I looked into building a backup server for my family, and that seemed to be the way to go. Get a decent hardware controller or build a NAS, and if you decide to go for the latter, put some Solaris-clone or BSD with ZFS on there.
Is Raid 0 Worth It For Ssd
I've had a second disk fail during rebuilds twice so far. Well, not necessarily, it depends. The IO cache holds data that has recently been read from or written to a disk, and if some application needs that data again, it is instantly available from the cache. It is by no means complete, the information isn't ready to be set in stone.
- In a nutshell, if your Boss is driving a new Mercedes, and you are driving a fifth-hand Escort, you are being had if you are working for a small shop.
- Were I a SAS company I'd buy 100 of these, run them for a couple years, try my hardest to break them….then if they hold up to the rigors of use
- Today were talking enterprise in the Petabyte storage.
- Every disk drive has some volume of RAM as well.
They create their number by using a combination of how long a component should last with how many drives get returned in a year and this counts the ones that are Unfortunately, although you may get good benchmark scores on certain functions, that is no guarantee that you will actually experience any significant performance gains. I can forgive a lot of the commenters on El Reg for having Commenter Disease, but not you. Ssd Raid 0 Trim permalinkembedsaveparentgive gold[–]PrintfReddit 0 points1 point2 points 2 years ago(0 children)Wow, TIL.
Pointed me to this http://ask.adaptec.com/app/answers/detail/a_id/16994. Is Raid 0 Ssd Worth It For Gaming In short, don't use RAID unless it's implemented for you in a reliable NAS box, or you're making a Linux file server / NAS. I don't back it up, but most of the important files I put on my 1TB HDD. https://www.reddit.com/r/buildapc/comments/1w9zh7/mother_board_selection_raid_01510_what_does_this/ If the chipset had changed, or the format had been upgraded, or newer chips didn't come with the backwards compatibility, you would be stuffed again.
and if you apply some read-ahead (if this is fruitful), maybe a somewhat longer wait now and then doesn't break per-client download performance all that much, if the clients normally can Raid 0 Ssd Benchmark You saved a few hundred on buying the drives and then spent three days of hell trying to recover your data and for me that isn't much of a cost savings With some combination of the above two and maybe 8 SSD drives attached to the card using RAID 0 what would you get? storage upgrades ssd ← You may like to read: → Let's Tear Down a Kiva Bot!
Is Raid 0 Ssd Worth It For Gaming
There's also the more rare RAID levels, like 15 and 51, which have their uses, but those are so rarely deployed it's not worth discussing them much. https://blog.codinghorror.com/you-want-a-10000-rpm-boot-drive/ there are very few legitimate reasons not to use the cloud permalinkembedsaveparentgive gold[–]Shadow14l -1 points0 points1 point 2 years ago(1 child) I don't back it up, but most of the important files I Is Raid 0 Worth It For Ssd Previously I had 3x1TB drives and had a failure, but re-building the RAID didn't seem to be much of a problem. Raid 1 Ssd Worth It But I guess the parity/stripe algorithms are an area where vendors can get performance gains over each other so unlikely to open that stuff up. 0 0 9 Dec 2010 ScottXJ6
I can even forgive them that. http://hcsprogramming.com/raid-0/raid0-failure.php Joel Hruska None of those technologies are near-term practical. massau cloud storage makes me scared where is my data or who can see it IDK no connection is no data. The question should be about price . . . Is Raid 1 Worth It
I am deeply disappointed that I was this wrong about you. You actually are incapable of comprehending that the world does periodically function in a manner that is non-cognate with your personal beliefs and experiences. RAID is also not perfect. Check This Out One thing to never do is to run SATA drives in anything other than RAID-10 or RAID-6.
Power the server physically off and then power them on…*poof!* drives are back up and doing fine. How To Setup Raid 0 Ssd What is the most common Raid setup? An important point in server deployment is, that sometimes the total capacity is less important than random IOps capability.
If you lack those parts, then you'll see an astronomical increase in failure rate of your RAID setup.
With that many workstations, their aught to be a central file repo. There are hybrid raid setups like raid 10, raid 50, 60, etc. Ugly thoughts. Raid 0 Vs Ssd Folks running / considering triple SSD RAIDs are not exactly 'typical desktop users' :) Parent Share twitter facebook linkedin Re: (Score:2) by AllynM ( 600515 ) * writes: All testing was
If you need to work with large files in parallel, i.e. Among striped arrays, RAID 0 yields the maximum total random IOps that can be extracted from a given set of drives, equal to the sum of individual per-drive IOps. Just choosing RAID levels on resync times is like choosing a car because the spark plugs are easy to change - hardly the whole story. 0 0 9 Dec 2010 William this contact form Oh, that's right, wipe the entire array and restore from backup, which, depending on the size of your array can take anywhere from several hours to days, more if you decided
In our shop at least, it seems that RAID controllers fail at least as often as disks themselves. You are an intelligent individual with a great deal of experience to share. If you need more random IOps, consider adding more spindles. I want a different job, it’s true.
Indeed, the increased (and sustained) load during the rebuild can cause additional drives in the array to fail. If the stripe size and transaction size is 64 kB, that results in 70 MBps of total throughput (note: this is on par with the sequential throughput of a single drive). The redundancy is a bonus but not essential, as important things should be redundant at a system level. Also note that this arrangement is potentially sensitive to local bottlenecks - if a particular file becomes extremely popular (and is too big to stay in the system cache), a single
This is perhaps the easiest type of load to be satisfied by a generous cache size. Whether this is practically relevant is hard to say, especially with SSDs. Now it's not even a doubling. Any failure in any drive in Raid 0 results in volume loss.
Then again, I might just buy a bigger SSD. Its still the closest thing I’ve ever found to being the guy I described above. jump from sata ssd to raided pcie ssds felt like painting go-faster stripes on a car. The writes are blocking in the calling thread, but the OS-level write-back and IO scheduling can make them arrive to the block device as if submitted in an async fashion.
Unlike the many of the other authors here on El Reg I started as a commenter first. write performance Desktop vs. RAID0 stripes data, so a single file or program is striped to both disks, so it can spin both disks and read them simultaneously for a performance boost.