APC UPS for Home and Office Forum
Support forum to share knowledge about installation and configuration of APC offers including Home Office UPS, Surge Protectors, UTS, software and services.
Posted: 2021-06-29 05:43 AM . Last Modified: 2024-03-21 10:56 PM
Link copied. Please paste this link to share this article on your social media post.
Posted: 2021-06-29 05:43 AM . Last Modified: 2024-03-21 10:56 PM
Over the past few weeks I've been getting an error with my DuperDuper (backup software) scheduled backup. I am backing up an external FW drive to another external FW drive. The SuperDuper log would show "Error | GetMasterBlock: Error 5 from read; amount=-1, wanted=512". I did all the prerequisite cable swapping, replaced power supply, fix permissions, reformat drive, turn everything off and on, ran drive genius, etc ...
As a last resort, I unplugged the drive from the UPS (an APC Back UPS 750) and plugged it straight into another AC outlet. For three days it backed up flawlessly. Then last night I plugged it back into the UPS - and the problem came back.
I'm stumped as to why it would start doing this now. I've had this drive and UPS for over a year and this problem only started a few weeks ago.
Could the UPS not be providing enough power? Could the power be 'dirty'?
Thanks in advance.
Link copied. Please paste this link to share this article on your social media post.
Posted: 2021-06-29 05:44 AM . Last Modified: 2024-03-21 10:56 PM
Link copied. Please paste this link to share this article on your social media post.
Posted: 2021-06-29 05:44 AM . Last Modified: 2024-03-21 10:56 PM
That's correct. For three nights it was plugged into one of the battery/surge outlets. So I've tried both on the APC.
Tonight I'm going to try a regular 'ol surge protected power bar that's plugged into the same outlet as the APC. The night the backup did work it was plugged into an outlet on the other side of the room.
Link copied. Please paste this link to share this article on your social media post.
Posted: 2021-06-29 05:43 AM . Last Modified: 2024-03-21 10:56 PM
Link copied. Please paste this link to share this article on your social media post.
Posted: 2021-06-29 05:43 AM . Last Modified: 2024-03-21 10:56 PM
Ok. Backup last night didn't run either. I think something is messed up in the HD enclosure. I have three other FW drives, all plugged into the APC and they run fine.
Link copied. Please paste this link to share this article on your social media post.
Link copied. Please paste this link to share this article on your social media post.
Posted: 2021-06-29 05:43 AM . Last Modified: 2024-03-21 10:56 PM
Is the hard disk plugged into the "Controlled by master" outlets?
Link copied. Please paste this link to share this article on your social media post.
Posted: 2021-06-29 05:43 AM . Last Modified: 2024-03-21 10:56 PM
Link copied. Please paste this link to share this article on your social media post.
Posted: 2021-06-29 05:43 AM . Last Modified: 2024-03-21 10:56 PM
SD support said "This generally means that one or more devices on the bus aren't responding properly when the mount points are refreshed. Try powering everything off and on... "
Which I've done numerous times.
I know the UPS works as I've been working during a power failure.
I know some of the outlets are supposed to provide power even when the computer goes into sleep mode. Thing is, my iMac never goes into sleep mode (just the monitor).
Link copied. Please paste this link to share this article on your social media post.
Link copied. Please paste this link to share this article on your social media post.
Posted: 2021-06-29 05:43 AM . Last Modified: 2024-03-21 10:56 PM
are you able to find out what the error means exactly from your other software? to me it seems like it is just unable to write 512 bytes of data for some reason. is that the case?
if so, are all of these drives always plugged into the UPS? is there any possible reason they could have turned off, thus then they would not be able to be writable?
have you seen the UPS run off the UPS while its on battery, successfully? i imagine so? i dont think it'd hurt to do a pull plug test while you are sitting in front of it though to make sure nothing is turning off that shouldnt, then causing the drive not to be able to be writable.
Link copied. Please paste this link to share this article on your social media post.
Posted: 2021-06-29 05:44 AM . Last Modified: 2024-03-21 10:56 PM
Link copied. Please paste this link to share this article on your social media post.
Posted: 2021-06-29 05:44 AM . Last Modified: 2024-03-21 10:56 PM
Hi
google
Error | GetMasterBlock: Error 5 superduper
gives a number of post relating to various problems, which may assist
Also look in the console logs, and see if there are any clues there.
Link copied. Please paste this link to share this article on your social media post.
Posted: 2021-06-29 05:44 AM . Last Modified: 2024-03-21 10:56 PM
Link copied. Please paste this link to share this article on your social media post.
Posted: 2021-06-29 05:44 AM . Last Modified: 2024-03-21 10:56 PM
I Googled that phrase and different versions of it but not finding anything that I haven't tried before.
Will try another AC outlet tonight.
As Holmes says ... "When you have eliminated the impossible, whatever remains, however improbable, must be the truth".
I know it doesn't make sense that it's the UPS causing the problem, but so far, whenever my HD is plugged into it, my backup doesn't run.
Link copied. Please paste this link to share this article on your social media post.
Posted: 2021-06-29 05:44 AM . Last Modified: 2024-03-21 10:56 PM
Link copied. Please paste this link to share this article on your social media post.
Posted: 2021-06-29 05:44 AM . Last Modified: 2024-03-21 10:56 PM
I plugged into the "Controlled by Master" outlet last night and got the same problem.
Link copied. Please paste this link to share this article on your social media post.
Link copied. Please paste this link to share this article on your social media post.
Posted: 2021-06-29 05:44 AM . Last Modified: 2024-03-21 10:56 PM
Sorry if I was unclear: the hard disk shouldn't be on the controlled by master outlets. Since you tested that last night, I assume before they were on the Battery + Surge outlets and it didn't work? I guess the only thing left to test is the surge-only ones.
Link copied. Please paste this link to share this article on your social media post.
Posted: 2021-06-29 05:44 AM . Last Modified: 2024-03-21 10:56 PM
Link copied. Please paste this link to share this article on your social media post.
Posted: 2021-06-29 05:44 AM . Last Modified: 2024-03-21 10:56 PM
That's correct. For three nights it was plugged into one of the battery/surge outlets. So I've tried both on the APC.
Tonight I'm going to try a regular 'ol surge protected power bar that's plugged into the same outlet as the APC. The night the backup did work it was plugged into an outlet on the other side of the room.
Link copied. Please paste this link to share this article on your social media post.
Create your free account or log in to subscribe to the board - and gain access to more than 10,000+ support articles along with insights from experts and peers.