Mass of 20, storage of images.

[anex_misd]

How do you do, it is necessary to do a mass of ~20, high-speed indicators strongly do not interest, on the only SATA, it to use RAID6.
What you do advise?
To gain storage of the type Of xyratex Of fiber Of channel - SATA 4835 or to gather down 3Ware before the great corps?
It would be desirable to obtain some price detachments…
.. contacts before the profile.

[ihLH]

alex_mist
How do you do, it is necessary to do a mass of ~20
Down what (and as) you it do plan to connect? Delineate in more detail task.

[anex_misd]

Generally this there will be storage for , place is necessary much… It will connected be on 1 of net on the order of 30 vehicles. It is possible question more specifically to pose?
Also people request that everything it looked like 1 disk (as this is better to realize?).

[metollic]

exLH wrote (a):
Down what (and as) you it do plan to connect? Delineate in more detail task.
I have some considerations in regard to this, type it is bought “head” with two controllers, disk regiments are caught to it, to the head are caught through the controller. That to select from the producers we do not thus far know, Hitachi, or IBM.

[ihLH]

It will connected be on 1 of net on the order of 30 vehicles
They everyone do use the general disk space?
In that case, it is expedient to use NAS of device (for example, IBM Of n3600, or NAS of our production). What level of fault tolerance must be ensured?

[metollic]

yes, still:
on the server there will be OS of linux, file system EXT3, raid must be preferably the 6th level, tons permits to separate out from the mass at the point of the 2nd screws, mass must be organized by one section, the speed of the operation of mass is not critical. Importantly so that there would be fault tolerance

[ihLH]

metallic
on the server there will be OS of linux
On which of “the order 30”?
file system EXT3
From this point on, , in which concretely place of this decision it must be EXT3 (and why)?

[metollic]

exLH wrote (a):
metallic
on the server there will be OS of linux
On which of “the order 30”?
server one will be down which will be connected, then already clients will be caught to the server
exLH wrote (a):
file system EXT3
From this point on, , in which concretely place of this decision it must be EXT3 (and why)?
but well on the section of to be file system? why 3? because it before is used on default.

[ihLH]

metallic
Here therefore I requested originally to in detail present task.
But that is received
It will connected be on 1 of net on the order of 30 vehicles and to the head they are caught through the controller, then server one will be down which will be connected. But it will then seem that everything will somehow otherwise be. It here and wishes definiteness.
Furthermore, if server one will be, then as this is compatible importantly so that would be fault tolerance?

[metollic]

It is agreeable in order not to be confused before technologies, I will explain more simply:
is necessary the storage of 20 by one section, is necessary fault tolerance, velocity is not critical, what still data are necessary?

[ihLH]

metallic
the storage of 20 by one section
Hitachi, or IBM
Not one of the producers indicated.
Only to me, you will forgive, it is in no way understandable, from where the requirement to have one section? Or before your Of linux there is no possibility to use LVM?

[metollic]

exLH wrote (a):
Only to me, you will forgive, it is in no way understandable, from where the requirement to have one section? Or before your Of linux there is no possibility to use LVM?
to me they said “to us it was it is necessary that one section and there everything is stale”, hence and requirement about one section, about LVM it went to smoke , I know tons about it only superficially.

[anex_misd]

For example, to us most likely it will approach 2 servers of the type Of trinity Of server 130, oppressed by screws under the tie in RAID5 (6). I thus comprehended that before them it is possible to insert 1 winchesters…
Only here is a question, how Adaptec is better/worse than 3Ware, simply we work based on 3Ware and they completely triple us.
I nevertheless wait from you although that sentence.

[js]

is more functional, but, as far as I understand, to you this is unimportant. We can and place - controllers are actually good.
Later Andrey will scribble.

[amd3008]

So I advise to read a little about the limitations of nucleus down the size of block devices with the random access (this I about /dev/sda, /dev/hda the like)
But to still to focus attention on the maximum permissible size of file before the selected file system. This before that case, when they request “and why, strictly file is not written?”.
To make masses more 4th on 32- X bit iron is must accurately. There are there many underwater calculi.

[ihLH]

to us most likely it will approach 2 servers of the type Of trinity Of server 130
You will forgive, and you (alex_mist) do refer some to metallic? Therefore as wishes are diametrically opposite…

[metollic]

exLH wrote (a):
to us most likely it will approach 2 servers of the type Of trinity Of server 130
You will forgive, and you (alex_mist) do refer some to metallic? Therefore as wishes are diametrically opposite…
we administrators in one and the same office, we precisely do not know what version to select, but already became clear that 20 - delirious undertaking, before principle as was explained also 5 will suffice on 4 of sections.

[ihLH]

metallic
alex_mist
to us most likely it will approach 2 servers of the type Of trinity Of server 130
And as you do plan to provide fault tolerance in this case?

[metollic]

in me here the explosion of the brain, I do not know, you can propose versions?
the requirement: to store 20 of data, velocity is not critical, fault tolerance compulsory, not the high price.

[js]

Versions:
1. disk system of the type HDS WMS100, IBM DS4200/3200/3400, Xyratex 5402 or Infortrend. To it two servers - beside cluster.
2. of the type Of netApp (IBM N -Series).
In any event conversation begins against level of tens of thousands of dollars. You although nearly designated budget - so simpler it will be.

[ihLH]

metallic
Before current formulating of task (as you it recorded for the last time) two servers in HA cluster and external disk system.
to store 20 of data, fault tolerance is compulsory, not the high price
But besides these 3rd conditions is one excess (it is possible to select any).

[metollic]

the budget there is none, tons to of representation we do not have how much this it can cost, the requirement:
20, fault tolerance, velocity are not critical.

[ihLH]

Approximate version (within the framework supply with sounied above) transmitted beside the post office.

[metollic]

Did look, interesting version, and clarify can that there why? for example why two servers? if it is necessary fault tolerance only OF , it is possible for the sake of one to be bridged?

[ihLH]

metallic
for example why two servers?
For fault tolerance, which is compulsory.
if it is necessary fault tolerance only OF , it is possible for the sake of one to be bridged?
But that you will make, if server suddenly does malfunction?

[metollic]

exLH wrote (a):
if it is necessary fault tolerance only OF , it is possible for the sake of one to be bridged?
But that you will make, if server suddenly does malfunction?
repair we will be
the exclusion of the possibility of the loss of data is implied by fault tolerance, and the fact that server can down some period move out the formation (glandule there it was burnt out or system it fell) before principle not terribly.

[ihLH]

metallic
the exclusion of the possibility of the loss of the data is implied by fault tolerance
Only here this is not named fault tolerance.
The state of preservation of data provides only standby copying.

[amd3008]

I propose to explain the frames of term “fault tolerance”.
If to man is necessary fault tolerance , then this is achieved as far as the redundancy of the elements of the failure of itself. I.e. are much disks, raid, two power packs etcetera.
However, when is bought DOWN server, then in leadership subconsciously appears sensation, that this all as a whole IS FAULT-TOLERANT. But indeed this is not so. The element of access to the data, i.e., server, is not doubled. Therefore to you they propose full-valued decision, but halved.
You represent, server died, and data were living. Of happiness only from this it is small, indeed thus far server before the repair data cannot be reached. Moreover, there is no guarantee that given with the accident also they did not perish to learn you this you only after the repair of server. Well i.e., the week through 2-3 as the minimum. It to you is must? Think above this.

[metollic]

it is good, let us allow with the utilization of the layout proposed as far as you, is guaranteed the state of preservation of data? YeS- with the observance of operating instructions. I.e. beside two controllers, fault-tolerant masses, all components are duplicated up, i.e., on leaving any of the components from the formation data they will remain whole? indeed it cannot be 20 of data, on the extreme I do not represent as to do this.
Another question, did note that before this layout of disks “not common”, i.e., “on the market” such you will not buy and do stand they more expensive than “ordinary” as the minimum two times, that before them “such”? special modification under the systems?

[ihLH]

metallic
is guaranteed the state of preservation of data?
The state of preservation of data is guaranteed during the timely standby copying and the proper storage of tapes.
indeed it cannot be 20 of the data
There are the strip libraries, which can and without the special problems.
If you do not wish to use a tape - use the second system of storage and VTL.
what before them “such”?
These disks are intended for this system. Other disks you there will not place.

[metollic]

exLH wrote (a):
There are the strip libraries, which can and without the special problems.
how much will be bridged? how long this will occupy (to 20)?
exLH wrote (a):
These disks are intended for this system. Other disks you there will not place.
than they are principally better than “the magazine” of ? it will not be the problems of year through two or three with the replacement of such disks because of their “”?

[ihLH]

how long this will occupy (to 20)?
One drive LTO4 can write to 120/c. Drives there can be much, but in this case you will most likely encounter with the fact that on many drives possibilities of mass will not suffice.
than they are principally better than “the magazine” of ?
Fact that you before this system (and analogous) will not be able to place other disks.

[metollic]

exLH wrote (a):
how long this will occupy (to 20)?
One drive LTO4 can write to 120/c. Drives there can be much, but in this case you will most likely encounter with the fact that on many drives possibilities of mass will not suffice.
as it was explained, to necessary 4 of the data
exLH wrote (a):
than they are principally better than “the magazine” of ?
Fact that you before this system (and analogous) will not be able to place other disks.
doubtful , they are worth almost three times more expensive and buying them more complexly, for what this?

[ihLH]

metallic
doubtful
of the fact that you there place other disks cannot, then besides what strictly a question does consist?
Is it possible before Audi A8 to place pistons from the Dnieper Cossack (they cheaper and meaning to place “original” there is none) - the same metal (well only to sharpen it is sensitive).

[metollic]

exLH wrote (a):
metallic
doubtful
of the fact that you there place other disks cannot, then besides what strictly a question does consist?
Is it possible before Audi A8 to place pistons from the Dnieper Cossack (they cheaper and meaning to place “original” there is none) - the same metal (well only to sharpen it is sensitive).
how long ago this producer () does work and what responses? it will not be such situation, that in 3 years we will be able such screws to nowhere reach?

[js]

Honestly speaking I do not know, how many years there is precisely this brand, but at least I these fellows for the first time met on you in 1999. But once this was one of the plants IBM. However, no one interfere withs buying and IBM DS3400 - is simple this somewhat more expensive.
.. Of - one of largest of producers. I.e. it is very widely known, but before the very small circles

[metollic]

there are whether expansible , on the common “magazine” of disks?

[js]

There is. Infortrend for example.
But you do not apparently still simply have a work experience with the systems of this capacity and with such requirements of reliability. But our experience shows that it is not necessary to be occupied by independent activity, more expensively it will move out. It is better to buy normal apparatus, also, to it a strip robot of the type IBM TS3100.
If you does not please , I already said about IBM 3200/3400. But is still HDS WMS100 and IBM DS4200 - but these are already other money.

[metollic]

gs wrote (a):
There is. Infortrend for example.
But you do not apparently still simply have a work experience with the systems of this capacity and with such requirements of reliability. But our experience shows that it is not necessary to be occupied by independent activity, more expensively it will move out. It is better to buy normal apparatus, also, to it a strip robot of the type IBM TS3100.
If you does not please , I already said about IBM 3200/3400. But is still HDS WMS100 and IBM DS4200 - but these are already other money.
everything is leant before the money, I with either IBM took or Hitachi, but… But down how much more expensive will be IBM with the same characteristicss as before the commercial sentence?

[metollic]

the prices on A24F-R2430 like strongly do not bite and disks common there do fit, at first glance not poor version, it is not only understandable, it expansible? additional disk regiments can be suspended?

[ihLH]

metallic
But down how much more expensive will be IBM with the same characteristicss as before the commercial sentence?
sheet- Price down 2 of x3250 + OF DS3300 (iSCSI, 36x750GB) of 76.6k$ with the kopecks

[metollic]

exLH wrote (a):
76.6k$

I think it is worthwhile to be stopped down Infortrend. before that model, that I did write, what controllers are used, not themselves they them do make?

[js]

Specifically, they themselves make.

[ihLH]

metallic
I think it is worthwhile to be stopped down Infortrend
But how long you are ready to wait the malfunctioned controller? (three days, week, month, two months)

[metollic]

gs wrote (a):
Specifically, they themselves make.
, and as people do not complain this producer? how generally this is interesting version besides the price?

[metollic]

exLH wrote (a):
metallic
I think it is worthwhile to be stopped down Infortrend
But how long you are ready to wait the malfunctioned controller? (three days, week, month, two months)
well week two I think, it will not pleasantly be but it will be possible to suffer

[ihLH]

metallic
well week two I think
correct response - from the month to two

[metollic]

exLH wrote (a):
metallic
well week two I think
correct response - from the month to two
i.e. this they have service?

[js]

generally does not have service. It supplies boxes To .

[metollic]

gs wrote (a):
generally does not have service. It supplies boxes To .
well guarantee exists? before the current of guarantee will be burnt out controller they zh of it had to replace? even before the course of the 2nd months

[ihLH]

metallic
Yes, they must. I to you all already about this wrote above.

[metollic]

exLH wrote (a):
metallic
Yes, they must. I to you all already about this wrote above.
i.e. entire problem before the not very hasty service care?

[metollic]

can do kilohms. sentence based on Infortrend?

[ihLH]

metallic
it transmitted beside the post office

[metollic]

exLH wrote (a):
metallic
it transmitted beside the post office
to super-, thanks, was rather well b even on the components the price indicate.

[ihLH]

metallic
was rather well b even on the components the price indicate
We supply finished products (disk systems and servers), but not the framing of glandules in the box. Try to ask on the components to write the cost of vacuum cleaner.

[metollic]

exLH wrote (a):
metallic
was rather well b even on the components the price indicate
We supply finished products (disk systems and servers), but not the framing of glandules in the box. Try to ask on the components to write the cost of vacuum cleaner.
and if to me it will be pieces 5 by screw about the reserve still?
and another question, this will approach those servers from first kilohms. sentence?

[ihLH]

metallic
It means you will order 5 additional disks you will obtain them separately.