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HDD in RAID 1

AfroLedgend
By AfroLedgend
in Storage Devices
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Go to solution Solved by MG2R,

Does your NAS have a dedicated RAID card (for RAID 1)? If so, that makes sense. If not, then what chipset does the motherboard have? 

Running software RAID, mdadm is the software controller. Have run it on Ubuntu desktop, Ubuntu server and now Debian.

 

First I ran on an ASUS AT3IONT-I DELUXE, don't know the chipset.

Now I'm running on an ASUS P8H77-I, H77 chipset. This is the chipset where I'm now running RAID5, complete build log and software config in signature.

 

Also editied my original post with one word ;)

Posted

I am planning on running two 3TB WD Red drives in RAID 1 and I want to know what sort of impact that will have on writing to the drives.

Dreadnaught: Intel Core i7 970 3.2GHz, Silverstone TD-02, ASUS Rampage III Extreme, Kingston Fury White 24GB 1866MHz, Crucial BX100 250GB + Seagate 2TB SSHD, AMD Radeon Sapphire R9 390 Nitro, NZXT S340 White, Bitfenix Fury 650W, BenQ XL2730Z.

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I think what it does is slow it down quite a bit, but the reliability of it is a decent trade off.

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Posted

I think what it does is slow it down quite a bit, but the reliability of it is a decent trade off.

I.... I think there is no performance hit. IIRC

It will slow down to half speed, since you are writing to two drives insted of one

Really? That makes no sense. At all.

† Christian Member †

For my pertinent links to guides, reviews, and anything similar, go here, and look under the spoiler labeled such. A brief history of Unix and it's relation to OS X by Builder.

 

 

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It will slow down to half speed, since you are writing to two drives insted of one

your title fits that answer perfectly

<p>Wires Suck :angry:
!fY0|_|(4|\|R34[)7#!5PMM37#3(0[)3:1337 70833|\|73R3[)!|\|49!\/34\|/4Y 4|\|[)93741!f3

 

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Atleast that's what Wikipedia claims, but of course Wikipedia can be wrong

True.

After some research, it depends on how you do the RAID1.

If it is software RAID1, it is mostly bad and will generally cut write (not read) performance down from 3/4th to 1/2 the usual speed.

If it is hardware RAID1 (and good hardware), there usually is little to no performance hit.

If it is Intel's desktop chipset RAID1, expect bad performance (cut the write speed by a little over half).

† Christian Member †

For my pertinent links to guides, reviews, and anything similar, go here, and look under the spoiler labeled such. A brief history of Unix and it's relation to OS X by Builder.

 

 

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What? You guys have any data on your speed ratings?

 

Nope.

 

I'll get some numbers later today, I have RAID 1 on so many systems and no one has complained that drive read/writes are slow or slower than something else, but I will gather the numbers.

I roll with sigs off so I have no idea what you're advertising.

 

This is NOT the signature you are looking for.

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Thanks for all your fast replies

What? You guys have any data on your speed ratings?

 

Nope.

 

I'll get some numbers later today, I have RAID 1 on so many systems and no one has complained that drive read/writes are slow or slower than something else, but I will gather the numbers.

I hope you are right I don't know the most about RAID but I had heard that RAID 1 lowers write speeds

Dreadnaught: Intel Core i7 970 3.2GHz, Silverstone TD-02, ASUS Rampage III Extreme, Kingston Fury White 24GB 1866MHz, Crucial BX100 250GB + Seagate 2TB SSHD, AMD Radeon Sapphire R9 390 Nitro, NZXT S340 White, Bitfenix Fury 650W, BenQ XL2730Z.

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Posted (edited)

Where are all you guys getting this misinformation from? :S

 

I've run RAID1for years in my NAS (now moved to RAID5). There is no performance difference (well, maybe 1MB/sec or something stupid like that). Your data gets written to both drives simultaneously. When accessed to read from, if you have an intelligent controller, you can even get higher read speeds theoretically, because it can read from both drives at the same time (but don't count on that, treat it as single-drive performance).

Edited by MG2R

PRODIGY -- SMALL TORRENT -- K'NEX SERVER -- NOCTUA PSU

 

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Where are all you guys getting this misinformation from? :S

 

I've run RAID1for years in my NAS (now moved to RAID5). There is no performance difference (well, maybe 1MB/sec or something stupid like that). Your data gets written to both drives simultaneously. When accessed to read from, if you have an intelligent controller, you can even get higher read speeds, because it can read from both drives at the same time (but don't count on that, treat it as single-drive performance).

Does your NAS have a dedicated RAID card (for RAID 1)? If so, that makes sense. If not, then what chipset does the motherboard have? 

† Christian Member †

For my pertinent links to guides, reviews, and anything similar, go here, and look under the spoiler labeled such. A brief history of Unix and it's relation to OS X by Builder.

 

 

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  • Solution

Does your NAS have a dedicated RAID card (for RAID 1)? If so, that makes sense. If not, then what chipset does the motherboard have? 

Running software RAID, mdadm is the software controller. Have run it on Ubuntu desktop, Ubuntu server and now Debian.

 

First I ran on an ASUS AT3IONT-I DELUXE, don't know the chipset.

Now I'm running on an ASUS P8H77-I, H77 chipset. This is the chipset where I'm now running RAID5, complete build log and software config in signature.

 

Also editied my original post with one word ;)

PRODIGY -- SMALL TORRENT -- K'NEX SERVER -- NOCTUA PSU

 

Community Standards -- Moderators

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Running software RAID, mdadm is the software controller. Have run it on Ubuntu desktop, Ubuntu server and now Debian.

 

First I ran on an ASUS AT3IONT-I DELUXE, don't know the chipset.

Now I'm running on an ASUS P8H77-I, H77 chipset. This is the chipset where I'm now running RAID5, complete build log and software config in signature.

 

Also editied my original post with one word ;)

Thanks for clearing that up, I don't know where i heard that it had an adverse affect on writes

Dreadnaught: Intel Core i7 970 3.2GHz, Silverstone TD-02, ASUS Rampage III Extreme, Kingston Fury White 24GB 1866MHz, Crucial BX100 250GB + Seagate 2TB SSHD, AMD Radeon Sapphire R9 390 Nitro, NZXT S340 White, Bitfenix Fury 650W, BenQ XL2730Z.

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Thanks for clearing that up, I don't know where i heard that it had an adverse affect on writes

It doesn't if your controller is capable (read: etiher capable hardware controller, or decently written software controller)... You're good to go :)

PRODIGY -- SMALL TORRENT -- K'NEX SERVER -- NOCTUA PSU

 

Community Standards -- Moderators

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