On Mon, Jun 16, 2014 at 5:36 AM, Nuno Magalhães <nunomagalhaes@xxxxxxxxx> wrote:
<SNIP>
>
> Are there any - recommended - consumer-grade drives out there that do
> support TLER? I was going for 1TB@7200, but that can change. I started
> disliking Seagate after a ST31000528AS died on me. They bought Maxtor
> a long time ago and recently bought Samsung's disk division. I've had
> no qualms with Toshiba. I'm not so sure on WD, they used to be less
> that good; and haven't tried Hitachi. What say you?
>
I've been using WD 500GB RAID Edition drives for over 4 years now. Now
problems at all.
As for 'consumer grade' I don't know. I just purchased two WD Red 3TB
drives for a RAID1. The drives are in the box but not in use yet. They
do include the error timing feature Phil pointed out. I can say from
experience that some WD Green drives I had quite awhile ago did not
have TLER and the RAID had problems with the drives being dropped.
Listen to Phil and get a drive that supports this feature.
c2RAID6 ~ # smartctl -l scterc /dev/sda
smartctl 6.1 2013-03-16 r3800 [x86_64-linux-3.12.22-gentoo] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org
SCT Error Recovery Control:
Read: 70 (7.0 seconds)
Write: 70 (7.0 seconds)
c2RAID6 ~ #
BTW: I'm the OP on the RAID6 VM slow boot thread you referenced
earlier. My plan of action since then is:
1) Move system from the 5-drive SATA2 RAID6 to the new 2-drive SATA3 RAID1
2) If performance is still lacking investigate using four of the
existing SATA2 500GB drives in a RAID10
3) If warranted investigate using my 120GB SSD with bcache (or
equivalent) in front of the RAID10.
My current power supply has 8 SATA drive power connectors all in use
this morning. (5 RAID6, 2 RAID1, 1 CDROM -> 2 RAID1, 4 RAID10, 1 SSD,
1 CDROM)
mark@c2RAID6 ~ $ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 2.7T 0 disk
sdb 8:16 0 2.7T 0 disk
sdc 8:32 0 465.8G 0 disk
|-sdc1 8:33 0 54.9M 0 part
|-sdc2 8:34 0 4G 0 part [SWAP]
`-sdc3 8:35 0 461.7G 0 part
`-md3 9:3 0 1.4T 0 raid6 /
sdd 8:48 0 465.8G 0 disk
|-sdd1 8:49 0 54.9M 0 part
|-sdd2 8:50 0 4G 0 part [SWAP]
`-sdd3 8:51 0 461.7G 0 part
`-md3 9:3 0 1.4T 0 raid6 /
sde 8:64 0 465.8G 0 disk
|-sde1 8:65 0 54.9M 0 part
|-sde2 8:66 0 4G 0 part [SWAP]
`-sde3 8:67 0 461.7G 0 part
`-md3 9:3 0 1.4T 0 raid6 /
sdf 8:80 0 465.8G 0 disk
|-sdf1 8:81 0 4.1G 0 part
`-sdf3 8:83 0 461.7G 0 part
`-md3 9:3 0 1.4T 0 raid6 /
sdg 8:96 0 465.8G 0 disk
|-sdg1 8:97 0 4.1G 0 part
`-sdg3 8:99 0 461.7G 0 part
`-md3 9:3 0 1.4T 0 raid6 /
sr0 11:0 1 1024M 0 rom
mark@c2RAID6 ~ $
Cheers,
Mark
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