If correctly I understand, that I named "a disk on embarkation" (when the disk automatically gets into gear on changeover taken off), "the Hot reserve" actually is called? (Or it is different things?)
Very much it was pleasant to me Thecus N4310 presence of two inputs for a supply!
But unfortunately in Thecus N4310 there is no mail system
Or all of them were from one batch, and took off by turns after several years of operation, or you had an unworkable equipment which spoiled disks.
It is difficult to tell, the equipment was valid from one series (more than 60 computers), but also most some times was that I buy a disk, and it in flow of the first week fails.
Scott Tiger wrote:
ZFS allows devices to be associated with pools as hot spares.
Yes, now understood that it ZFS (the Hot reserve).
It was the general description or to specific model? (That is, it is possible to connect TWO disks in a mode of a hot reserve and on HP Microserver Gen8 and on Thecus N4310?)
Oh, yes count probability of failure of two successively disks for one month and not
If did not hear on the century as at acquaintances failed disks in a mirror in flow of several days would not fuss. As they say at Murphy: If the probability exists - that it is mandatory happens, and at the most inappropriate moment. And then to firm it manages where more expensively than one hundred dollars.
but because of answering delay to spot-check, spot-check at some instant considers that a disk not the worker.
Therefore - buy disks for spot-check, for example WD red and will not take off.
About necessity of setting for RAID-files of disks with small admissible time for answering delay, I know. And was going to put WD Red. But anyway, I wanted to tell thanks for that that you paid to this attention (after all if did not know could run into problems)
About from what to do NAS - if want ready, here: https://www.qnap.com/en/there there are all types raid + "hot spare", but all terribly expensive.
Looked, on their site, like even some models of type TS-531X and TS-451A were pleasant, and in them even mail is, but is not present a uniform mention about ZFS and Hot Spares. Plus very much frightens their politician with licenses. Any function is suddenly necessary, and it like is in it NAS, but on it the license is necessary by above cost most NAS.
If most, I can advise http://www.openmediavault.org/ it free of charge and on the basis of Linux. Truth I do not know, whether there is there all that is necessary for you.
At most any more there will be no time and forces on that to understand.
Once again I will repeat, it would be desirable the simple decision from a box where is ZFG (Hot Spare), mail and a file server on office from 10-15 persons (though for mail 40-50 it is required to them on any cases).
it is passed...
It about WD Green or that type.
There type, in a case if at a disk something it is impossible to disassemble something, normal has it is admissible 8 miles/micro seconds on that nevertheless to get the information. And to have such time delays inconveniently, after all if all disks will brake - speed of operation essentially falls. And at costs that type if the time delay more than 4 miles/micro seconds that to consider the unit/disk , and for them disks should have the maximum admissible time delay of 2 miles/micro seconds. Thus besides heard that physically WD Green from WD Red than do not differ, and even that delay period at WD Green is possible then they ideally work in . But the sense which wanted to inform S.G. Completely true - we were cried out that by a disk with a problem, you it and see that it in the excellent working form, and all because of one parameter which can long and not jump out.