First mobile winchester Seagate with speed of rotation 72 ob./min.
We continue acquaintance to modern hard disks form-faktora 2, inches for noutbukov an average and the top echelon, begun in materials:
On turn one more sign product — first winchester Seagate form-faktora 2, inches with speed of rotation 72 ob./min.
Historically stores of this series became the second after disks form-faktora 2, inches for noutbukov with speed of rotation of the magnetic plates, equal 72 ob./min. Magnificent first-borns from Hitachi have existed in proud loneliness more than year, and Seagate could overtake them (having begun market deliveries) only in the end of 20 when at Hitachi a following series mobile semity'syachnikov Travelstar 7K1 has been already declared. In fact, as it is usual, from the moment of the announcement (summer of 2005) before real occurrence in the market of these disks Seagate has passed some time...
Series Momentus 7200. appears in internal ibm notebook t documents Seagate as Momentus with code name M72, that is after Momentus aka Venus with the perpendicular magnetic record, considered by us century And though disks of a considered series have appeared in the market actually simultaneously with mobile pyatity'syachnikami 5400.3, using «perpendikulyarku» logically follows, nevertheless, in a series 7200. manufacturer did not begin to apply new technology of magnetic record, having limited to the longitudinal magnetic record checked up by time debugged in Momentus 5400.2. Moreover, the density of magnetic record in M appears even a little below, than in Mercury (the second generation of disks Momentus 5400.2), and capacity of the senior models of the first semity'syachnikov Seagate does not exceed 1 Gbytes. And only later, summer of 20 Seagate has dared to show to the world the first mobile semity'syachniki with perpendicular record Momentus 7200. Galileo (about them we shall talk another time).
It is interesting, that disks ibm notebook t of series Momentus 7200. intend the manufacturer not only for high-efficiency noutbukov, similar mobile applications and for the personal computer small form-faktorov which recently becomes more and more and more, but also for serious professional systems — for example, for bleyd-serverov. Such models (they, however, exist and in series mobile pyatity'syachnikov Seagate) are designated by the letter «B» (obviously from Blade) on the end: for example, ST910021AB and ST910021SB for PATA and SATA models M accordingly, and hardly you can find them in usual computer shops. :) And here PATA-model' M at retail quite is on sale and in retail-variante it is designated as ST910021A-RK and ST96023A-RK for capacity of 1 and Gbytes ibm notebook t accordingly.
The basic characteristics of these stores in comparison with predecessors are resulted in table 1. To compare them to characteristics of some other mobile pyatity'syachnikov and chety'rehty'syachnikov it is possible, for example, having taken advantage.
All disks of series Momentus 7200. have the buffer of Mb and use plates in capacity of or Gbytes (however, Gbytes are used only in seniors 100-gigabaytny'h models whereas all other models have 40-gigabaytny'e plates). The declared density of record at them makes up to Gbit on kv. Inch (linear density up to 7 BPI at density of paths 1 TPI), that is it is obvious ibm notebook t it is less, than at Momentus 5400. where it can reach 98, Gbit on kv. Inch (linear up to 7 BPI at density of paths 1 TPI). Probably, creating the first mobile semity'syachniki Seagate it was reinsured a little and has underestimated density of record for the best reliability. However, in the second series "thin" semity'syachnikov Momentus 7200. Seagate was not greedy any more and has simply dispersed "perpendicular" models Venus up to 72 ob./min., having left density former.
Models M can be equipped with interfaces UltraATA/1 and Serial ATA 1, Gbit/s, and the last have support NCQ (that is especially critical for bleyd-primeneniy and not so it is important for noutbukov). They, as well as ibm notebook t Mercury2, have shockstability 250G/900G at rabote/hranenii accordingly (that is less, than at Venus), average time of search at them is better on ms (basically, due to smaller on 1, ms latentnosti than rotation) though thus have a little increased acoustic noise and e`nergopotreblenie. The last can appear critical, as consumption in a mode idle and by active search at the first semity'syachnikov Seagate appears approximately in one and a half time above, than at similar pyatity'syachnikov Mercury if to trust specifications! And on weight first-borns have passed for typical for disks of it form-faktora 1 gram, potyajelev up to 1 gram. However, the manufacturer still declares for them « low power consumption » (any more not comparing, however, with chety'rehty'syachnikami ;)).
On a kind new Momentus 7200. do not differ from:
Even the version firmware ibm notebook t at the tested copies 7200. and 5400. has appeared the same — 3.04. From the point of view of supported functions of distinction between models of series M72, Venus and Mercury diagnostic utilities also have not noticed: management of acoustics of search through register AAM and some modes Power Management still by disks Seagate are not supported.
Accordingly, if we also expect from the first mobile semity'syachnikov Seagate new unsurpassed speeds they can arise only due to the best « physical standards » — speeds linear chteniya/zapisi and time of access. In the rest they should repeat Mercury2.
Let's pass to tests. Following our kind tradition connected by that adaptive formatting of plates leads to different high-speed parameters of copies of stores of the same ibm notebook t models, we ottestirovali two "identical" disks ST910021A in capacity of 1 Gbytes with interface UltraATA/100.
For comparison following stores have taken part in tests also:
Thus, all participants of the given review have form-faktora 2, inches, speed of rotation of plates 54 ob./min. (except for Hitachi 7K60), the buffer of Mb (except for Toshiba from Mb) and on two magnetic plates. Well and compare productivity of our heroes to some earlier stores you can independently, having taken advantage of data from our previous, as a technique of testing the same.
The stand was applied to tests of hard disks form-faktora 2, inches in structure of:
Parent payment ABIT IC7-G on a chipset i875P with southern bridge ICH R
Mobile winchesters were ibm notebook t rigidly fixed on metal the chassis of the case of the test system block and by means of an adapter were connected to the controller of interface UltraATA/1 or directly to controller Serial ATA of bridge ICH on a parent payment. The basic winchester was "master" on the first channel of the controller of a chipset, and the examinee a disk was connected by "master" on the second channel of the same controller. Tests were spent under control of operational system MS Windows XP Professional SP1. Winchesters were tested as not marked on sections (in tests Intel Iometer, H2Benchw and AIDA32), and broken and formatted by regular means of operational system depending on a kind of the test: One NTFS-razdelom the greatest possible capacity for tests of average time of access and removal of the schedule of speed of reading in WinBench and two equal sections NTFS or FAT for ibm notebook t other tests (WinBench Disk WinMark 99, copyings of files by various patterns, test ATTO Disk Benchmark, the test mnogopotokovogo chteniya/zapisi Nbench 2. and the test of speed of disks in program Adobe Photoshop). Sections NTFS had the size in half of volume of a disk everyone (that is the second section began exactly with second half of disk), and sections FAT had the size on 327 Mb, and the first began in the beginning of a disk (on the "fastest" paths), and the second — is equal from second half of disk. The size klasterov NTFS and FAT got out by default — and Kb accordingly.
For definition of physical characteristics of disks (average time of access, speed of ibm notebook t the interface and linear speed chteniya/zapisi plates) tests AIDA32, H2benchw and WinBench were used. For an estimation of the general productivity we use numerous patterns in Intel Iometer, quite good test C'T H2Benchw, work with a disk of program Adobe Photoshop, mnogopotokovy'e reading and record of files and conventional WinBench 99.
At first — schedules of speed of linear reading of disks (click on icons to look full-size schedules). To compare these schedules to schedules for other mobile disks, open, for example, a page with ours.
Predictably, schedules and speed of linear reading for two copies of one model ST910021A it has appeared various — "thanks" adaptive formatting. :)
As a result of increase of speed of rotation of magnetic plates disks Seagate M taki overtake all current pyatity'syachnikov and the first semity'syachnikov Hitachi Travelstar 7K60, however their victory ibm notebook t appears not such overwhelming as «perpendikulyarsch'iki» Momentus 5400. already rise closely, and in million in byte per second these disks Seagate and have not mastered a boundary (it has obeyed Hitachi while only 7K100). Growth of linear speed of reading at M in comparison with M5400. has made only 12- % (at that that speed of rotation has increased on third!), that not absolutely corresponds to declared values BPI (700/778* % = %), that is even adaptive formatting at M is done with some "reinsurance".
On speed of work of interface UltraATA/1 at disks Momentus any 7200. unexpectedness it is not observed: it on an average level.
But tests for average time of ibm notebook t access at reading inform us, that access at M7200. was accelerated not on ms concerning seniors M5400.2, and all on 1,6-1, ms. «Nedobrav», by the way, it is a little up to the values specified in specifications ( ms instead of passport 10,5+4, ms). And on speed of search the first mobile semity'syachniki Seagate and could not overtake the first mobile semity'syachnikov Hitachi 7K biennial prescription! It is necessary to wait Momentus 7200. which, we shall hope, will inherit faster search from Momentus 5400.3.
As if to average time of access at record which in this case reflects efficiency ke`shirovaniya casual record in the buffer of the winchester unexpectedness have not occured, and Momentus 7200. here inherits parameters of the predshestvennikov-pyatity'syachnikov, showing as a whole quite good, but also not record values (conceding, in particular, to many disks Hitachi ibm notebook t and Samsung).
In tests mnogopotokovoy records disks Seagate traditionally are one of the best, and M did not become exception, having shown record parameters, and one copy has appeared already on % more quickly another. However, "perpendicular" Momentus 5400. comes to our heroes on heels, and newcomers Samsung not away to play in this test electronic muscles. :)
By detailed results of the test mnogopotokovoy records can be seen, that productivity of disks Seagate M does not fall almost, even if streams of record are carried between the beginning and the middle (on volume) a disk.
As if to mnogopotokovogo readings what here to argue with disks Fujitsu superb optimized for these problems and Samsung it is almost impossible for series SpinPoint M60, and pyatity'syachnikam WD and Hitachi 5K1 our heroes in this test ibm notebook t concede, advancing only pyatity'syachnikov most Seagate, yes ancient semity'syachnik Hitachi. As we also assumed, with identity of design M has inherited from pyatity'syachnikov Seagate and "features" of work of their microprogram.
In tests Disk WinMark of package WinBench situation as a whole is declined in favour of semity'syachnikov Seagate.
And it is necessary to note, that one copy ST910021A has outstripped another on % in Business-teste on FAT32, and in High-End-proizvoditel'nosti it has appeared more quickly already for (!) percent on FAT (and on % on NTFS), and slower copy at times loses the some pyatity'syachnikam. Here also guess after that, "will carry" to you or not with purchase of fast store M7200.1. Tea, prodavec-to under the similar claim will not ibm notebook t change a disk. ;)
By the way, in "professional" (test High-End) productivity hard disks Momentus 7200. on the average not too far send away from the best modern mobile pyatity'syachnikov though the manufacturer and positions the semity'syachniki for noutbukov Workstation-klassa.
At typical work of the personal user we estimate productivity of winchesters also under two complex track tests — Futuremark PCmark and C'T H2benchW.
In first of them even the fastest semity'syachnik Seagate could not catch up while starichka-semity'syachnika 7K from Hitachi almost twice with smaller capacity. Though has stolen up to it closely. Second copy ST910021A has conceded to brand new more capacious disk Momentus 5400. though otry'v from all others pyatity'syachnikov in this test at our heroes it is significant.
However in other similar test (H2benchW) our heroes nevertheless could pull out the first place at named above competitors though it turns out only at most shustry'h ibm notebook t copies ST910021A whereas less shustry'e can concede to the best pyatity'syachnikam.
In the test for speed of work with a time file of program Adobe Photoshop again we see, that "fast" M manages taki to overcome all competitors and to put a new rod of speed whereas less successful copy of this model concedes on speed to the some pyatity'syachnikam though advances semity'syachnika Hitachi 7K60.
As the manufacturer positions the given stores and for compact servers of an initial level value is got with results of their speed in various server and workstation-patternah in program IOmeter. However, I do not exclude, that for server updatings M a little bit other can be used firmware.
First — the average results on traditional server patterns File ibm notebook t Server, Web Server and Database.
Here results for two copies ST910021A have appeared are very close because average time of access at them practically identically. Nevertheless, upwards old man Hitachi Travelstar 7K due to the best time of search nevertheless takes. At the same time, the given diagram evidently shows significant advantage mobile semity'syachnikov above pyatity'syachnikami in server loadings.
In a pattern the Workstation, also actual for disks of the given class, the difference between three semity'syachnikami is insignificant, and all of them with odds advance mobile stores of lower class.
In more "personal" problems of type of reading, record and copying of large and fine files, in which we estimate productivity on ibm notebook t own patterns with casual character of references within the limits of all store, it is possible to note again unconditional (while) leadership old semity'syachnika Hitachi Travelstar 7K60, that is disks Seagate M and could not overcome (on the average) set by it, and also newer pyatity'syachnikami Hitachi Travelstar 5K1 a level of speed. Whether can make it Seagate Momentus 7200. with perpendicular record?
However, on some separate operations results Momentus 7200. also can be rather quite good: for example, they unconditionally are in the lead at casual reading large files (all the same at them higher linear speed together with fast search), and also at casual copying fine files (probably, more optimum for the given class of problems adaptive segmentation of the ibm notebook t buffer of a disk by a lot of segments).
The unexpectedness had appeared rather mediocre speed M at casual record of large files and at copying large files.
But at imitation of a defragmentation on FAT they confidently are in the lead, conceding, however, to separate figurants on NTFS.
Do not bring a consolation and patterns potokovy'h chteniya-zapisi files large or fine blocks (simulating, for example, work of the digital tape recorder with function timeshifting or loading on a disk at editing video). Here mobile disks Seagate traditionally are not strong, and M due to the best physical standards were slightly tightened to leaders (unfortunately, only on fine blocks, but not on large), but and could not outstrip stores Fujitsu ibm notebook t and Hitachi on more typical 64-kilobaytny'h blocks, having conceded to disks Samsung, Hitachi, Fujitsu and Toshiba on 4-kilobaytny'h blocks. Probably, it too is connected with features of adaptive segmentation of the buffer of the mobile winchesters Seagate which are not so having a kind feeling for simultaneous reading and record by rather large blocks (restriction by quantity of segments from below on high enough value?).
The manufacturer in the specification marks low-power-potreblenie the semity'syachnikov. Whether So it, we shall find out on personal experience though proceeding from the same specifications of miracles here it is not necessary to wait nevertheless. Following already fulfilled technique (see, for example,), we have measured directly typical currents of consumption of disks in ibm notebook t various operating modes: idling (only rotation), at reading, record, active search, work ATA-interfeysa, at inclusion of a feed and so forth
These parameters in a complex most full reflect a picture as with heating a disk (product of a current on a pressure of a feed In directly gives thermal capacity disseminated by a disk and to measure heating a disk inside of concrete noutbuka too would be maloinformativny'm), and with profitability of its work in structure of this or that noutbuka with approximately known for " a thermal package ». Results, however, will be useful and for bleyd-serverov, especially at high loading.
Results of measurements of an average current of consumption of disks in the basic modes are resulted in table (the ammeter with internal resistance 0, Ohm joined in ibm notebook t a circuit of a feed +5). Some modes require the explanatory:
Idle is a mode of simple rotation of a disk (without the reference to data).
ATA Transfer is a mode of data transmission on trunk ATA without the reference to the plate.
Seek — active search (chaotic moving of heads on all plate).
Start — the maximal current during the moment of start (average from a constant of time nearby 0,1).
All modes, except for Start, were measured during passage of corresponding stages of test AIDA Disk Benchmark, and for operations of reading and record only the maximal values (in the beginning of a disk) here are shown.
Table 2. A current of consumption (in mA) hard disks from the power supply +5V, measured in various operating modes.
At once we shall note the highest among UATA-modeley consumption M in a mode idle — it exceeds even a parameter of ibm notebook t "old men" Hitachi 7K60. The starting current, however, at these winchesters has appeared not such high — less, than at of some pyatity'syachnikov and the same 7K60. And at poiske/chtenii/zapisi consumption of stores Seagate Momentus 7200. has appeared far not most "outstanding" on a background of competitors that allows to hope for quite good parameters of profitability at a hard work. And certainly it is not necessary to be guided by the figures of consumption written on the case of winchesters Seagate — they are extremely conditional.
To lead these figures to values more useful to the end user, we had been calculated two parameters: the average ibm notebook t power consumption of mobile disks at typical slow work of the user with noutbukom and at intensive (constant) work of the personal computer with the winchester. For calculation of these estimated parameters which are not applying, to tell the truth, on any « true in final instance », I have applied two characteristic models of use of disks:
1. At typical slow work of the user (for example, office or at editing schedules) the model of average consumption of a disk is described by the formula:
Where alphabetic modes mean a current of consumption by a disk in corresponding modes of the reference to it, and figures, ibm notebook t by which these currents are multiplied, — percent on time during which the disk is in this mode (for reading and records undertake the maximal values of a current of the consumption, corresponding initial sites of a disk; mode Seek here is actually considered through reading and record). In a basis of this model is necessary, in particular, that at typical work noutbuka a disk chitaet/pishet during approximately % from general time.
2. Similarly, for a hard work with a disk (for example, a defragmentation, scanning of a surface, copying of files and so forth) average consumption is numerically described by the formula:
Where the current is resulted in amperes. On the calculated data of power consumption the following diagram ibm notebook t is constructed.
The average power consumption of mobile disks at typical work of the user noutbuka and at intensive (constant) work of a computer with the winchester.
As a result, it is possible to draw a conclusion, that profitability Seagate Momentus 7200. is now approximately at a level of the worst on this parameter pyatity'syachnikov (that in itself already not bad). And if in a mode of relative inactivity semity'syachniki Seagate also cannot brag of special profitability at a hard work they are moderate enough in consumption on a background of the some people pyatity'syachnikov from Hitachi and Toshiba. We shall hope, that in the disks of series Momentus 7200. inheriting reduced consumption from Momentus 5400.3, situation will improve in addition.
Well, later couple of years after the first occurrence in the market 2,5-dyuymovy'h winchesters for noutbukov series Travelstar 7K with speed of rotation 72 ob./min., developed IBM ibm notebook t and let out already under mark Hitachi GST, the manufacturer of winchesters largest nowadays has decided to contend with the leader and showed to the world the first Seagate Momentus 7200. with the same speed of rotation of magnetic plates, having implanted, thus, in the market the tendency of transition of mobile winchesters on the raised turns. Unfortunately, a miracle did not take place — despite of a significant time interval and almost the twice greater capacity of models Seagate they it is far not in all problems are capable to overcome old men from Hitachi. In particular, slower search and ibm notebook t not absolutely optimum algorithms ke`shirovaniya at disks Seagate even at appreciable higher linear speed brake them in problems of a server orientation, at casual records and copying of large files, as well as at mnogopotokovy'h reading and chtenii-zapisi a little. Some consolation while is the victory over all in tests High-End Disk WinMark, C'T H2BenchW, at mnogopotokovoy records and at work with svop-faylom Adobe Photoshop, and also in a number of other problems, which (victory), however, will a little be saddened with that productivity of these stores can strongly depend on a concrete copy of the given model and in some cases it can appear essentially below, than it was expected, conceding even to competitors. Any more not speaking that speed of less capacious models of series M7200. which plates are formatted with smaller density, can appear still below. ibm notebook t And competitors on a place do not cost, and Hitachi almost simultaneously with M has let out the second series mobile semity'syachnikov — Travelstar 7K1 with the maximal capacity up to 1 Gbytes which disks, believe, beat many records of productivity. So Seagate it is necessary to hope while only for a following series of the semity'syachnikov Momentus 7200. to win to itself laurels of the fastest 2,5-dyuymovy'h disks. However, if to recollect, that at Seagate already for a long time there are magnificent 2,5-dyuymovy'e desyatity'syachniki which, however, are larger on dimensions, than disks for noutbukov, it is possible to conclude what to pursue leadership at any cost this company not necessarily. :) Well and interested persons can compare productivity M and Savvio, using Savvio as the technique of their testing practically completely repeats those for noutbuchny'h stores.
Other discussions in conference:
