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Topic: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

It is necessary as mail and a file server for small firm.
The main criterion - that provided automatic changeover taken off of  a disk.
And that all somehow come across only simple RAID5 or RAID10 which are not especially useful to office usage.

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

InterSky;
Vendors consider reliability RAID1 more than sufficient for such small devices that there also a disk for autochangeover to push.

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

InterSky;
HP Microserver Gen8.

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

a_shats;
It not NAS.
Usage HP Microserver Gen8 as NAS is still  search

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

WildSery wrote:

Vendors consider reliability RAID1 more than sufficient for such small devices that there also a disk for autochangeover to push.

But after all a question not at a rate of the device, and in safety of the data. It would be desirable reliability, and disks sometimes so quickly fly ( once worked at office where it is stable on 1 disk in a week took off). Or you can offer any other variant of reliability?

WildSery wrote:

Usage HP Microserver Gen8 as NAS is still  search

I looked at description HP Microserver Gen8 but also in it did not find possibility of automatic changeover taken off of  a disk. Though the price at Gen8 unexpectedly low! I thought NAS will cost somewhere 400-600$, and this Gen8 costs exactly 200EUR. Truth as I understood it absolutely bare and there anything is not present (not , not programs). Besides in the description found about programs nas4free and FreeNAS, but I am afraid that there there will be no normal mail...

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

InterSky;
In us is  - the disk took off - the letter came.
And you automatically stamp to change.

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

Siemargl wrote:

In us is  - the disk took off - the letter came.
And you automatically stamp to change.

the Notification is yes, but not the fact that after it at me in flow of couple of days turns out to arrive to them to change (and if I departed on the sea to have a rest, so they have every chance the whole month on one disk to work). On it also I search for something hardly more reliably than simply NAS. About 15 years ago on simple  (RedHat) collected systems where two disks in RAID1 for , plus three disks in RAID5 for databases, plus one on embarkation. But then there was time to understand, and already will not pull, I will deliver something and let all works from a box...

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

InterSky wrote:

But then there was time to understand, and already I will not pull, I will deliver something and let all works from a box...

http://www.thecus.ru/catalog/home/N4310/

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

InterSky wrote:

disks sometimes so quickly fly ( once worked at office where it is stable on 1 disk in a week took off)

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.

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

InterSky, ZFS?

 Hot Spares
ZFS allows devices to be associated with pools as hot spares. These
devices are not actively used in the pool, but when an active device
fails, it is automatically replaced by a hot spare. To create a pool
with hot spares, specify a spare vdev with any number of devices. For
example;
# zpool create pool mirror c0d0 c1d0 spare c2d0 c3d0
Spares can be added with the zpool add command and removed with the
zpool remove command. Once a spare replacement is initiated, a new
spare vdev is created within the configuration that will remain there
until the original device is replaced. At this point, the hot spare
becomes available again if another device fails.
An in-progress spare replacement can be cancelled by detaching the hot
spare. If the original faulted device is detached, then the hot spare
assumes its place in the configuration, and is removed from the spare
list of all active pools.
If the original failed device is physically replaced, brought back
online, or the errors are cleared, either through an FMA event or by
using the zpool online or zpool clear commands, and the state of the
original device becomes healthy, the INUSE spare device will become
AVAIL again. 

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

InterSky wrote:

it is passed...
The notification is yes, but not the fact that after it at me in flow of couple of days turns out to arrive to them to change (and if I departed on the sea to have a rest, so they have every chance the whole month on one disk to work). On it also I search for something hardly more reliably than simply NAS. About 15 years ago on simple  (RedHat) collected systems where two disks in RAID1 for , plus three disks in RAID5 for databases, plus one on embarkation. But then there was time to understand, and already will not pull, I will deliver something and let all works from a box...

Oh, yes count probability of failure of two successively disks for one month and not  smile

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

WildSery;

wrote:

It not NAS.
Usage HP Microserver Gen8 as NAS is still  search

To you  or to go?

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

InterSky wrote:

It would be desirable reliability, and disks sometimes so quickly fly ( once worked at office where it is stable on 1 disk in a week took off).

If in spot-check to deliver  disks yes, they will "take off" under loading. That is, with a disk happens nothing, 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 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.
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.

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

S.G. wrote:

If in spot-check to deliver  disks yes, they will "take off" under loading.

I bought  Hitachi of raised reliability, both died - one in 3 months, another through 1. Others  Hitachis,  - without problems work years on 5.
So, as carries.

S.G. wrote:

That is, with a disk happens nothing, but because of answering delay to spot-check

It about WD Green or that type.

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

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 sad

WildSery wrote:

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:

Hot Spares
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?)

Siemargl wrote:

Oh, yes count probability of failure of two successively disks for one month and not  smile

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.

S.G. wrote:

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)

S.G. wrote:

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.

S.G. wrote:

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).

kdv wrote:

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.

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

InterSky wrote:

But unfortunately in Thecus N4310 there is no mail system sad

Is.
http://www.thecus.com/sp_app_classify.php?TYPE_ID=12
(A Russian-speaking site, alas, at them very scanty)

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

miksoft wrote:

it is passed...
Is.
http://www.thecus.com/sp_app_classify.php?TYPE_ID=12
(The Russian-speaking site, alas, at them very scanty)

is more exact so:
http://www.thecus.com/sp_app_search.php … EGORIES=12

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

a_shats wrote:

to you  or to go?

To me to go by a taxi, instead of on a limousine.
On what to go to the author - most to solve.

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

InterSky wrote:

Yes, now understood that it ZFS (the Hot reserve).

Super!
Reminded an ancient joke:
-Ivanov, what such the Native land?
-I do not know, a companion the ensign!
-Ivanov, the Native land is your mother! Understood?
-So it is exact!
-Sidorov, what such the Native land?
-The native land is Ivanov's mother!
-The fool, the Native land  that and your mother! Understood?
-So it is exact, understood. Ivanov in my brother.
To confuse  and  it it is necessary to be able.
are able all who feel like it, including everyones LVM, ZFS, and also regular  mdadm too it is able.

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

Ivan_Pisarevsky wrote:

C  and  it it is necessary to be able.
are able all who feel like it, including everyones LVM, ZFS, and also regular  mdadm too it is able.

Explain...
In the citation shown by user Scott Tiger, by the first line it is written:
- ZFS allows devices to be associated with pools as hot spares.
In what then a difference?
It can you a hot reserve with hot changeover confuse?

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

InterSky;
ZFS it is not mandatory to make hot spare

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

InterSky wrote:

- ZFS allows devices to be associated with pools as hot spares.
In what then a difference?

"ZFS is able" and "ZFS is" phrases a little different in sense.
P.S.
Yes, 1 can consist more than of 2 drives. It not absolutely , but is a little similar.

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

Ivan_Pisarevsky wrote:

Yes, 1 can consist more than of 2 drives. It not absolutely , but is a little similar.

Not, it at all  as the carrier wears out together with first two.

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

WildSery wrote:

it is passed...
Not, it at all  as the carrier wears out together with first two.

Certainly. But from the point of view of minimization of an operating time of an array in the degraded mode, conducts to itself even better . Again  the question of deterioration of cells sharply costs for , for magnetic plates all is not so unambiguous.

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Re: Prompt NAS on 3 disks that was RAID1 and a disk on embarkation

kdv wrote:

it is passed...
I bought  Hitachi of raised reliability, both died - one in 3 months, another through 1. Others  Hitachis,  - without problems work years on 5.
So, as carries.

Of course, an important element in the IT world wink but a rule to the kesarevo-Caesar server - to the server and road-spot-check, it is better to observe luck wink

kdv wrote:

it is passed...
It about WD Green or that type.

Yes, it.