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RAID5 on 3 legs! What leg should I get?


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#1 +riahc3

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Posted 19 January 2014 - 22:52

Hello,

Yes I know the title isn't funny :p

My RAID5 had one if its 3TB HDDs die today (I have a backup) so I was gonna use Seagate's warranty to replace it....

Well, this one is out of warranty so I guess I have to buy a brand new one. Since I use this (currently) for RAID5 storage, I think Im going to go a bit better quality HDD this time....

At work we use WD Red's line which seems pretty OK with the data we move/store....I currently have these ST3000DM001 which at the time I bought because they were the cheapest and I did not work.

Now I can buy something better for the long run. I can get the ST3000DM001 for 97 euros but for 118 euros I can get the WD30EFRX.

Should I go with the WD30EFRX (I know Ill get lower performance from the drive as it will go with the highest performance the ST3000DM001 can) or should I go with another ST3000DM001?

Kinda of a ASAP thing as even though Ive turned off the PC with the RAID5, I don't wanna just leave it there semidead...


#2 Fahim S.

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Posted 19 January 2014 - 22:56

The Seagate equivalent of the WD Red is the ST3000VN000.

Any particular reason you aren't considering this?



#3 TPreston

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Posted 19 January 2014 - 22:58

The Seagate equivalent of the WD Red is the ST3000VN000.
Any particular reason you aren't considering this?

Forget about the expensive drives go for RAID6 double parity with an enterprise grade controller (With battery backed cache). It'll give you greater availability without the expensive drives.

#4 Fahim S.

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Posted 19 January 2014 - 23:02

Forget about the expensive drives go for RAID6 double parity with an enterprise grade controller (With battery backed cache). It'll give you greater availability without the expensive drives.

 

Not sure I'd describe either WD Red and Seagate NAS drives as expensive.

Not like they're Constellations, or RE4s.



#5 OP +riahc3

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Posted 20 January 2014 - 08:17

Hello,

The Seagate equivalent of the WD Red is the ST3000VN000.
Any particular reason you aren't considering this?

No idea Seagate even had a NAS line....

The ST3000VN000 is at 119€
ST3000DM001 for 97€
WD30EFRX for 118€

Obviously for 1€ more Im not gonna sweat.

I do see mixed results: Some say the ST3000VN000 has 2 year, some say it has 3 year warranty. From the price and performance point of view, they seem the same....I think my choice will go down to the warranty.

If it is 3, I might then get the ST3000VN000 like you commented. Thank you Fahim.

I was intrested in the Red line because Ive read a lot about it and I have it here at work.

#6 OP +riahc3

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Posted 20 January 2014 - 14:04

Hello,

In a odd strange of events, today Seagate telephone service is closed because they celebrate a "company holiday". What "company holiday"?

Anyways, Ill call them tommorow to comfirm what warranty they have on the drive. If it aint 3, Im going with the WD Red...

#7 sc302

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Posted 20 January 2014 - 14:47

Hello,

In a odd strange of events, today Seagate telephone service is closed because they celebrate a "company holiday". What "company holiday"?

Anyways, Ill call them tommorow to comfirm what warranty they have on the drive. If it aint 3, Im going with the WD Red...

US is Martin Luther King Day....it is a Federal Holiday.

http://en.wikipedia....r_King,_Jr._Day



#8 OP +riahc3

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Posted 20 January 2014 - 14:52

Hello,

US is Martin Luther King Day....it is a Federal Holiday.
http://en.wikipedia....r_King,_Jr._Day

AFAIK, Ive called the Seagate support HERE, not the US one.

#9 OP +riahc3

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Posted 21 January 2014 - 08:40

Hello,

AMAZING. The level that I am PO right now is huge....

I called Seagate's presale department, tell them that I wanted to know the warranty of the ST3000VN000, Seagate's NAS line. They asked me a bunch of irrelevent questions such as email, my name, my number (which at that stage I just didnt feel like giving them). After all that, she actually has the....arg....to tell me that by model number she cannot tell me how many years of warranty I have because she needs a serial number, not a model number. I said, well this is presales so I obviously do not have a serial number. The reason Im calling is because this is presale and Im trying to decide between your drive and the competition's. She puts me on hold and tells me again that she needs a serial number but those drives usually have 2-3 years warranty but she cant tell me for sure.

WD Red; Here I come :rofl:

#10 OP +riahc3

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Posted 21 January 2014 - 09:44

Hello,

I do see that the WD Red is 5400rpm while the ST3000DM001 .....will my disks suffer from this since all the rest are 7200?

I dont want to damage the rest of the drives by making them work way slower than what they are made.

Also: http://hdd.userbench...-3TB/1386vs1374

Hmm...

#11 StrikedOut

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Posted 21 January 2014 - 10:20

I would have a rethink on the storage solution with large drives. RAID5 with this size drivesisn't necessarily the best solution any more. I would look at this site and plug your numbers in, http://www.raid-fail...d5-failure.aspx and see what you get.

 

Other good reads.

http://www.zdnet.com...ing-in-2009/162

http://www.smbitjour...-more-reliable/



#12 -adrian-

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Posted 21 January 2014 - 10:29

How about the hitachi Deskstar 7k4000 or 7k3000 in your case. Code HDS720xxxxx640



#13 HawkMan

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Posted 21 January 2014 - 10:44

Hello,

I do see that the WD Red is 5400rpm while the ST3000DM001 .....will my disks suffer from this since all the rest are 7200?

I dont want to damage the rest of the drives by making them work way slower than what they are made.

Also: http://hdd.userbench...-3TB/1386vs1374

Hmm...

 

They won't really work slower though. 



#14 +Odom

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Posted 21 January 2014 - 10:46

I have a NAS running 4x Seagate ST3000DM001 in RAID5, just like you. Before the Seagates I had Hitachi, and before that I had WDs.

I would not recommend mixing drives in the NAS, be it in size or in speed.

If you read the forums and compatibility notes for many NASs, they also never recommend eco drives, usually those running at 5400RPM. Reason being that they go into power-standby and then drop out of the RAID. Read the compatibility list of HDDs for your NAS.

 

If you put in a drive that only runs at 5400RPM and all the others run at 7200RPM, yes, it will suffer, of course. The seek and transfer times are less on the 5400 than on the others. Plus, will it even work together? Imagine pulling a carriage with 4 horses, where three of them are fine and running and one of them is old and can only walk.

 

In my opinion, if I had to replace a drive in a NAS I would either buy the same one again or replace all of them. The only exception being if you use the drives as individual drives in the NAS and not as RAID.

 

There are drives made for 24/7 use in NAS which obviously would be more suited. However, if these cost a lot more than the regular 7200, and the regular ones are on the compatibility list, I would stick to those.



#15 OP +riahc3

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Posted 21 January 2014 - 10:49

Hello,

I would have a rethink on the storage solution with large drives. RAID5 with this size drivesisn't necessarily the best solution any more. I would look at this site and plug your numbers in, http://www.raid-fail...d5-failure.aspx and see what you get.
 
Other good reads.
http://www.zdnet.com...ing-in-2009/162
http://www.smbitjour...-more-reliable/

Im switching in a few months to a non RAID5 solution.
 
 

They won't really work slower though.

Hardware wise I imagine they will still work at 7200 and 5400, but wouldn't the transfer be like a 5400 drive?