6/1/2023 0 Comments Change istatistica alarm tempThe second thing that makes 0 sense is that I have a 512gb HD in the macbook pro backing up and it is doing an incremental backup yet wants 1.39tb of space. The TimeMachine volume is set up to allocate as much space as it needs as all the volumes on the NAS are virtualised and you can either set a limit or just allow the volume to scale as necessary. Somehow its failing due to a lack of space. I'm backing up to a synology NAS that has ~16tb total storage and 11tb free. It happened once and I couldn't fix it so I started a new timemachine backup which worked for a week or so and then broke again in the same way. One of these breakages has happened that I can't seem to figure out. It will work for months and then suddenly break with no changes to my system or config. TimeMachine Issues Not going to lie, I have always found TimeMachine really hit and miss. Repeated reading/writing of large amounts of data to the NAS HDDs is going to significantly shorten their lifetime.While all this is going on, my LAN is slowed down.Well, while this Time Machine incremental backup was running, the PECI CPU temperature was only 47 ✬ and the fans were not running hard (iStatistica sensors). I read that one of the commoner reasons for kernel_task running a lot is to control CPU usesage, to ensure the CPU doesn't overheat. However, kernel_task isn't taking much CPU time - kernel_task was taking about 2% of CPU time. Activity Monitor shows kernel_task as having sent 618 MB and received 8.6 GB (!) over the network and read/written 2.69 GB/2.61 GB to the internal HDD. When I checked the Synology NAS, Time Machine was still logged in as a user. Time Machine, from the icon in the menu bar seemed to think it had finished the backup within a few minutes. As Time Machine started preparing the backup, kernel_task kicked in. I have just now watched, on Activity Monitor, Time Machine do a 156 MB incremental backup. Investigating further, and watching Activity Monitor, this seems to be associated with kernel_task. Some months ago, I don't recall exactly when, I noticed that Time Machine backups, even small incremental backups seemed to be taking a very long time. I do Time Machine backups to a NAS and I use the NAS only for Time Machine backups.Ĭurrently the NAS has 2 x 4 TB HDDs (both less than a year old) set up as a single RAID volume - the useable space on this volume is about 3.7 TB with around 60% (2.22 TB) used, the remainder free. OK, so I don't know if this is an issue with macOS or Synology NAS but I'll ask here and again in the Synology forums - I have upgraded operating systems on both recently. The Honeywell 5809 operates on One 3-volt lithium Duracell DL123, DL123A, Panasonic CR123A battery and has the battery life is 3-5 years with approved batteries only.īe sure to check the alarm panel’s compatibility for wireless vs hardwired devices.Synology NAS DS213+ running DSM 6.2.4-25556 Both the Honeywell 5809 and System Sensor 5621 are 135 degree F fixed temperature / rate of rise heat detectors. There are wireless heat detectors like the Honeywell 5809 and hardwired heat detectors like the System Sensor 5621. A rate of rise heat detector can be restored. Once a fixed heat detector is triggered due to high temperatures, it cannot be restored and will need to be replaced. Users should verify that the space where the heat detector will be installed does not have naturally rapid temperature rises that exceed the detector’s trip point. When fires build quickly, the rate-of-rise compensation prevents thermal lag, allowing these detectors to respond when their set point is reached and will send a signal to the alarm panel if the rise of temperature is 15 degrees F (8.3 C) or more per minute. Fixed temperature heat detectors can suffer from thermal lag when fires build quickly may alarm when the room temperature is higher than the set point.Ī rate of rise heat detector responds like a standard, fixed-temperature heat detector with slowly developing fires. There are two different types of heat detectors, a fixed heat detector and a rate of rise heat detector.Ī fixed temperature heat detector is designed to alarm at a set temperature. Once the temperature rises above 135 degrees F (57 C) or 194 degrees F (90 C), the heat detector will send a signal to an alarm panel and trigger an alarm. Heat Detectors react to the change in temperature caused by fire.
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