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Hi,
I would like to know what temperature is considered normal for a hard disk. In my laptop with a Samsung HM121HC 120GB IDE drive, the temperatures are these:
- 43-44C, with hdparm -B 128 and a lot of cliks
- 48-49C, with hdparm -B 254 and no clicks
The room temperature is usually 21-24C. The highest temperature I've ever seen in this HD was 52C with the lid closed. According to the specs, the maximun working temperature is 55C.
In my desktop computer, the HD temperature never gets higher than 35C.
Can you please post your values?
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33 and 35 ℃.
This is a copy paste from Wikipedia http://en.wikipedia.org/wiki/Hard_disk_drive:
A common misconception is that a colder hard drive will last longer than a hotter hard drive. The Google study showed the reverse -- "lower temperatures are associated with higher failure rates". Hard drives with S.M.A.R.T.-reported average temperatures below 27 C had failure rates worse than hard drives with the highest reported average temperature of 50 C, failure rates at least twice as high as the optimum S.M.A.R.T.-reported temperature range of 36 C to 47 C.
So according to this you don't need to panic.
There has been a lot of discussion about the clicking sound of hard drives in the forum. I think you should check out this thread: http://bbs.archlinux.org/viewtopic.php?id=39258. What does "smartctl" say about your Load_Cycle_Count?
Last edited by Morra (2008-06-08 13:21:57)
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Thanks Morra. Because of the thread you mention I started paying attention to these things. I also wrote in that thread. If I use -B 254 the temperature rises, which seems not very dangerous, and the hard drive freezes sometimes, specially when writing big files. If I use the B 128, which is the default value for my HD, the clicks are heard every few seconds and the Load_Cycle_Count grows accordingly. Now the number is 270748, which I think is quite high for a drive only 7 months old. Also, it seems that no freezings occur whith this setting.
smartctl -A /dev/hda
smartctl version 5.37 [i686-pc-linux-gnu] Copyright (C) 2002-6 Bruce Allen
Home page is http://smartmontools.sourceforge.net/
=== START OF READ SMART DATA SECTION ===
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000f 100 100 051 Pre-fail Always - 1
3 Spin_Up_Time 0x0007 252 252 025 Pre-fail Always - 2125
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 433
5 Reallocated_Sector_Ct 0x0033 099 099 010 Pre-fail Always - 11
7 Seek_Error_Rate 0x000e 252 252 051 Old_age Always - 0
8 Seek_Time_Performance 0x0024 252 252 015 Old_age Offline - 0
9 Power_On_Hours 0x0032 096 096 000 Old_age Always - 2670
10 Spin_Retry_Count 0x0032 252 252 051 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 228
191 G-Sense_Error_Rate 0x0032 099 099 000 Old_age Always - 15177
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 54
194 Temperature_Celsius 0x0022 100 082 000 Old_age Always - 46 (Lifetime Min/Max 12/52)
195 Hardware_ECC_Recovered 0x001a 100 100 000 Old_age Always - 5686
196 Reallocated_Event_Count 0x0032 252 252 000 Old_age Always - 0
197 Current_Pending_Sector 0x0012 252 252 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0030 252 252 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0036 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x000a 100 100 000 Old_age Always - 12
201 Soft_Read_Error_Rate 0x0032 252 252 000 Old_age Always - 0
223 Load_Retry_Count 0x0032 098 098 000 Old_age Always - 2802
225 Load_Cycle_Count 0x0032 074 074 000 Old_age Always - 270748Last edited by Laertes (2008-06-08 17:03:31)
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Oh, I didn't notice that you had posted to that thread already.
I don't have a laptop myself so I don't have any good advice to give you. The only thing that crosses my mind is to try to minimize the disk acitivity. Disable access time from fstab and try PowerTOP http://www.lesswatts.org/projects/powertop/ to track down the resource hogs.
Good luck with the problem solving.
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Well, I am almost sure that the freezings are caused by the hdparm -B 254 command. I've been doing some tests and no freezings at all with the -B 128 option. The only problem is the high grow rate of Load_Cycle_Count.
My fstab already has acces times disabled:
cat /etc/fstab
#
# /etc/fstab: static file system information
#
# <file system> <dir> <type> <options> <dump> <pass>
none /dev/pts devpts defaults 0 0
none /dev/shm tmpfs defaults 0 0
/dev/hda1 / ext3 defaults,noatime,nodiratime,async 0 1
/dev/hda2 swap swap defaults 0 0
/dev/hda3 /home ext3 defaults,noatime,nodiratime,async 0 2Offline
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