1
vote
0answers
49 views

How to set the spin down timeout on WD Green HDDs [migrated]

My internal WD20EARS disk does not spin down autoamtically. I tried hdparm -S 1 (5 seconds), but nothing happens. I disabled the IntelliPower headparking with wdidle3 from the Ultimate Boot CD. hdparm ...
1
vote
1answer
283 views

How to erase a SSD to restore factory performance in Linux?

Due to big performance issues with an mdraid-1 array I'd like to pull down from the array one of the devices (Samsung 840 Pro), erase it to restore factory performance and re-add it to the array. The ...
2
votes
2answers
3k views

How to use hdparm to fix a pending sector?

SMART is stating one pending sector on of my server's hdd. I've read lot's of articles recommending using hdparm to "easily" force the disk to relocated the bad sector, but I can't find the correct ...
0
votes
1answer
588 views

Is wiper.sh working?

I'm setting up a server running Ubuntu Precise, and I'm trying to verify if SSD TRIM is working. fstrim is failing: ~ sudo fstrim -v / fstrim: /: FITRIM ioctl failed: Operation not supported So ...
1
vote
1answer
583 views

Is it possible to get hdparm to report the current level of performance degradation on my SSD?

I work on a product that is a headless Debian Linux system with removable Intel X-25M solid state drives. Recently we noticed that the read/write performance of these drives degrades over time, and ...
5
votes
3answers
4k views

How to determine disc spindown time

I am able to set both APM and spindown times using the command: hdparm -S 246 -B 128 /dev/sda Unfortunately I can only find the APM value in the information output: hdparm -I /dev/sda | grep ...
2
votes
2answers
521 views

Linux Disk tuning help

I have a Software RAID1 disk that is randomly experiencing very slow read times. hdparm -t /dev/md0 /dev/md0: Timing buffered disk reads: 2 MB in 12.43 seconds = 164.80 kB/sec It appears to be ...
3
votes
1answer
213 views

Set device offset in Linux due to failed hardware RAID?

I have a failed hardware RAID card. This card had two drives in a RAID-1 mirror. Plugging one of the drives into the motherboard shows no partition table. Using a program like testdisk, I can see ...
1
vote
2answers
1k views

How can I test hd performance on an OpenVZ container?

CentOS 5.x | VPS | OpenVZ I'm trying out a vps that uses OpenVZ and am not sure what command to type to measure disk read performance. I thought hdparm would work but I get the following: ...
1
vote
2answers
7k views

Ubuntu seems to ignore spindown_time in config /etc/hdparm.conf

I have /etc/hdparm.conf configured to power down the external USB HDD, but it actually never spins down. When I manually turn it off (hdparm -Y or set its spindown hdparm -S 36) - everything works as ...