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Old September 13, 2010, 02:20 PM
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Default WD Caviar green EARS 2TB + Linux

Ok, I'm probably not gonna help a lot of people on a computer forum on how to do this, so this is more like a kind of review without exactly being a review...

Basicly, I just want to say for Linux user this drive is a very good performer. The drive is showing ridiculous copy speed, from one green to another.

The way i'm using those drive, I have no use for TLer. Lucky me, I could not enable it. But I succesfully disabled WDidle.

I'm copying from a NTFS file system to ext4, it shows from 107.9 to 109.1 MB/s while copying different files, but mostly large ones (50Gb blu-rays, 4Gb DvD's). this suprised me as I usually was between 60-80MB/s when writing on those drive in Win7.

If you wonder why I'm copying from NTFS to ext4 : Both drive were in my win7 machine in raid1, but now that I have a new mobo for my server i'm getting data back on it, so I have my data on 2 different PC, in 2 different place.

Here are benchmarks done with Bonnie++ on my Ubuntu server x64 machine. (Athlon x2 64 4200+. 1gb ram, 8500GT) Os drive is a caviar blue 250 gb. This is a goddamn mess, but I it's a CUI becnchmarks sent in a text file.. Actually, it does not say much, but anyway, I'm just happy with my near- 110MB/s drive to drive copy speed. This brings me to think Windows just can't deal with data properly in some way -.-

edit: replaced my server's name by xxxxxx

Version 1.96 ------Sequential Output------ --Sequential Input- --Random-
Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
xxxxxxx 2G 113 97 61891 17 25669 9 1209 96 59186 6 147.3 1
Latency 97706us 2339ms 315ms 29709us 89095us 749ms
Version 1.96 ------Sequential Create------ --------Random Create--------
xxxxxx -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 14845 57 +++++ +++ 20196 54 16390 62 +++++ +++ 18819 52
Latency 566us 853us 968us 406us 75us 377us

Anyone got experience with those drive under linux?

Edit: If anyone needs help setting up one of these under linux, message me.. or google -.-

Last edited by Behemoth-; September 14, 2010 at 04:21 AM. Reason: Typo
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Old September 13, 2010, 02:41 PM
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nice. they are meant for storage and for people that dont care about access times and the likes much. i sometimes transfer 50+ gig files back and forth, good speeds.

thanks for the offer, im sure some will need it :)
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Old September 14, 2010, 08:32 AM
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Quote:
Originally Posted by Behemoth- View Post
Ok, I'm probably not gonna help a lot of people on a computer forum on how to do this, so this is more like a kind of review without exactly being a review...

Basicly, I just want to say for Linux user this drive is a very good performer. The drive is showing ridiculous copy speed, from one green to another.

The way i'm using those drive, I have no use for TLer. Lucky me, I could not enable it. But I succesfully disabled WDidle.

I'm copying from a NTFS file system to ext4, it shows from 107.9 to 109.1 MB/s while copying different files, but mostly large ones (50Gb blu-rays, 4Gb DvD's). this suprised me as I usually was between 60-80MB/s when writing on those drive in Win7.

If you wonder why I'm copying from NTFS to ext4 : Both drive were in my win7 machine in raid1, but now that I have a new mobo for my server i'm getting data back on it, so I have my data on 2 different PC, in 2 different place.

Here are benchmarks done with Bonnie++ on my Ubuntu server x64 machine. (Athlon x2 64 4200+. 1gb ram, 8500GT) Os drive is a caviar blue 250 gb. This is a goddamn mess, but I it's a CUI becnchmarks sent in a text file.. Actually, it does not say much, but anyway, I'm just happy with my near- 110MB/s drive to drive copy speed. This brings me to think Windows just can't deal with data properly in some way -.-


Anyone got experience with those drive under linux?

Edit: If anyone needs help setting up one of these under linux, message me.. or google -.-
So, is it Ubuntu 10.04? Ubuntu 10.04 was able to align the partitions with the default software? Or did you update them to the current package versions? I didn't think the versions at the Ubuntu 10.04 release were supporting the alignment of 4kb-sector drives at the time. Your drive is definitely working with aligned partitions if you're getting those numbers, though.
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Old September 14, 2010, 03:49 PM
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Originally Posted by technix View Post
So, is it Ubuntu 10.04? Ubuntu 10.04 was able to align the partitions with the default software? Or did you update them to the current package versions? I didn't think the versions at the Ubuntu 10.04 release were supporting the alignment of 4kb-sector drives at the time. Your drive is definitely working with aligned partitions if you're getting those numbers, though.
edit: I'm using ubuntu server x64 10.04. I don't think any distro / kernel will automaticly support 4k sectors out of the box. it needs to be manually set. Samething for partition tools I believe. (under linux)

Actually, I did use the ''fdisk'' tool to format EARS drives. It's a very complete command tool to create partitions.

Basicly, here's how to do it.
-First, you need root privilege for fdisk to work properly.
#fdisk -l --> this allow us to see connected drives. For the purpose of this exemple, i'll use sdb.
#fdisk /dev/sdb --> this allow us to enter in some kind of menu for this drive
here, you can use "m" to see a complete list of commands/tools

to delete A partition, it's "d". let's believe the drive already is empty, so we use "n" to add a new partition.
I did need only one partition, so I used a primary partition. --> "p" and then selected "1" as partition number.
after we need to select the first cylinder of this partition, this is the important part. it MUST be 64 or a multiple of 4096.

Then you chose the last cylinder, just press enter to use the whole drive. Once this is done, use need to use "w" to write these changes to the partition table. You now have your partition. You need to format it. I dont know if you could use gparted here or some other tool, but i THINK you could. I did use mkfs to create it. See "man" for help on this command ;)

Edit: I did copy files from my 500Gb Black to a 500Gb 7200.11, (NTFS to EXT4 again) and it did about 75MB/s. is the black or the 7200.11 goddamn slow? maybe...

Last edited by Behemoth-; September 14, 2010 at 04:51 PM.
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Old September 14, 2010, 09:16 PM
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I think Fedora 13 and maybe the current version of System Rescue CD will have up-to-date versions of the partition tools that will align the partitions of -EARS drives. I haven't tried it but last time I took a look at the partition tools (GUI tools and including required package versions), they seemed to be at versions numbers supporting the alignment of 4-kb sector drives. I would test a drive but I don't have any. I suspect a live CD of Fedora 13 would work and System Rescue CD has been updating quite a bit lately. I am guessing either could have the first sector of the partition start at 64 and would thereby have partition offsets be in multiple of 8 (as needed).
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Old September 14, 2010, 10:05 PM
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I got 1 ears in my server, and i just got a second one. No complaints, great drives.
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