当。。。的时候加速计划驱动器的值设置为 254 或 255(禁用磁头停车),使用hdparm或者硬盘扫描实用程序,我的 HGST 7K1000 HTS721010A9E630 硬盘偶尔会发出正常的安静活动声音,但会定期发出短暂的爆发声(很难说......)从 0.1 到 0.5 秒,每 1-3 秒发生一次。该问题在另一个问题如果启用了磁头停放(APM 值为 128),驱动器在访问后会发出咔嗒声,直到下次访问驱动器时才会听到其他声音。
我不知道是否可以使用日立特征工具会出现同样的问题,但我还不愿意使用它,直到我弄清楚使用它是否会导致保修失效。我问了一个关于保修的问题这里是超级用户以及WD 社区网站. 尚无答案。
答案1
那是不对的,加里,它发出声音的原因是由于这种磁盘相关的一种称为预防性磨损均衡(PWL)的功能,这会导致执行器在几秒钟后移动位置,以尽量减少 HDD 制造商所声称的读取头在一个位置停留时间过长时飞越产生的热量。
答案2
经过几个小时的实验、思考和阅读,我找到了答案。我有一个相当疯狂但合理的假设,即 HGST 7K1000 HDD 的制造商有点懒惰,他们没有实现禁用磁头停放,而是让驱动器进行一些活动(我猜是读取某些内容)以使其保持活动状态,这样不活动计时器永远不会达到某个点,因此驱动器每秒都会发出活动声音。所以,换句话说,我的猜测是,对他们来说,制作一个每秒创建活动的计时器比更改停放磁头的计时器更容易。
另外还有一个不太疯狂的解释,但仍然有点奇怪:将 APM 值设置为 254 或禁用 APM 会使驱动器进入活动空闲模式,而驱动器在活动空闲模式下每秒都处于活动状态应该是正常的(或设计成这样)。嗯,我猜,这样驱动器就不会变得懒惰并在工作时睡着了。
以下是我使用该驱动器测试的一些 APM 值:
HEX DEC RESULT
==============================================================
"01h - 7Fh ... The deepest Power Saving mode is Standby"
01 1 parked immediately or almost immediately
7F 127 not tested
"80h - BFh ... The deepest Power Saving mode is Low power Idle"
80 128 parked immediately or almost immediately
96 150 parked immediately or almost immediately
9B 155 parked immediately or almost immediately
9C 156 parked in about 3 sec after several read/write sounds
9D 157 parked in about 1 minute
9E 158 not tested
9F 159 parked in about 1 minute
A0 160 parked in about 1 minute
A1 161 parked in about 1 minute
A2 162 parked in about 1 minute
A3 163 not tested
A4 164 not tested
A5 165 parked in about 1 minute
A6 166 parked immediately or almost immediately
A7 167 parked immediately or almost immediately
A9 169 parked immediately or almost immediately
AA 170 parked immediately or almost immediately
B4 180 parked immediately or almost immediately
BE 190 parked immediately or almost immediately
BF 191 parked immediately or almost immediately
"C0h - FEh ... The deepest Power Saving mode is Active Idle"
C0 192 read/write sound approx. each second
C4 196 read/write sound approx. each second
C8 200 read/write sound approx. each second
E0 224 read/write sound approx. each second
FE 254 read/write sound approx. each second
“高级电源管理级别包含离散带,在“设置功能”命令部分中有详细描述。”
“当功能寄存器为 85h(=禁用高级电源管理)时,最深层的省电模式变为活动空闲模式。”
我引用了HGST Travelstar 7K1000 规格用引号引起来。