High Load_Cycle_Count Hitachi 7K500
I replaced the drive with a 500GB 7200RPM Hitachi Travelstar four days ago. Model HTS725050A9A364. I have smartmontools installed and smartctl reports Load
CycleCount at 13316. If I check frequently, it goes up on value at a time, sometimes 2-5 in about 10 seconds. If I listen for a "clicking" sound, this value goes up every time there is this click. The Hitachi specs for this are "Load/Unload Cycles 600,000". But it does not say if this is an upper limit, a mean, or a minimum.
The 3 year old Hitachi 5K250 it's replacing has less than 20,000 load cycle counts. At the current rate, I'll hit 600,000 in 6 months. In any event, it doesn't seem normal. The drive was restored with Time Machine. There are no unusual processes running, and no related messages in system.log. Certainly not every two seconds.
The description in Hitachi's 176 specification for this drive describes "Low Power Idle Mode" as the heads being unloaded on the ramp, spindle is at full speed. Recovery time to Active mode is 300ms. I do occasionally get these very short 1/8 to 1/4 of a second delays. I type a letter, and it doesn't immediately appear, but before I type the next letter. I click on a button and it doesn't immediately depress. Behaviors I didn't have before swapping out the drive. I have no way of determining if this is drive related or restoration related.
What's the collective say?
Reviving this thread:
http://discussions.apple.com/message.jspa?messageID=12365156
The 3 year old Hitachi 5K250 it's replacing has less than 20,000 load cycle counts. At the current rate, I'll hit 600,000 in 6 months. In any event, it doesn't seem normal. The drive was restored with Time Machine. There are no unusual processes running, and no related messages in system.log. Certainly not every two seconds.
The description in Hitachi's 176 specification for this drive describes "Low Power Idle Mode" as the heads being unloaded on the ramp, spindle is at full speed. Recovery time to Active mode is 300ms. I do occasionally get these very short 1/8 to 1/4 of a second delays. I type a letter, and it doesn't immediately appear, but before I type the next letter. I click on a button and it doesn't immediately depress. Behaviors I didn't have before swapping out the drive. I have no way of determining if this is drive related or restoration related.
What's the collective say?
Reviving this thread:
http://discussions.apple.com/message.jspa?messageID=12365156
MacBook Pro 4,1, Mac OS X (10.6.5)