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Old 29-11-2010, 12:40   #1
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Default [Review]Western Digital WD5000AADS sau "cel mai verde dintre verzi"


Fondata in 1970, Western Digital este astazi al doilea cel mai mare producator de hard discuri din lume. Pornind de la prima serie de hard discuri, „Centaur” (1988), continuand in 1991 cu celebra serie „Caviar”, cei de la Western Digital si-au perfectionat continuu tehnologiile si sunt responsabili de multe din inovatiile din domeniu, fiind lider in domeniu.

Cum in ziua de astazi, industria PC-urilor e foarte diversificata, la fel de diversificata e si cererea pentru dispozitive de stocare. Astfel, existta mai multi factori care influenteaza decizia cumparatorilor, cum ar fi performanta, fibilitatea, pretul, consumul si silentiozitatea. Si daca tot am adus vorba de silentiozitate, am ajuns si la subiectul testelor de azi, si anume

Western Digital WD5000AADS
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Old 29-11-2010, 12:42   #2
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Poveste
(sau cum a ajuns sa cumpar cel mai verde dintre cei verzi)

Pe cand aveam primele mele sisteme, nici ca-mi pasa exact ce se intampla inauntru, ori cata galagie facea cand era pornit. Dom’le, face galagie, inseamna ca merge. Dar a trecut ceva timp de atunci, si pot spune ca perceptia mea asupra calculatoarelor e ceva mai rafinata acum. Ceva mai rafinata e putin spus, am ajuns astazi sa fiu un maniac al silentiozitatii, visand adeseori la un sistem cu zero decibeli.

In aceasta alergatura a mea dupa acest sistem, am descoperit SSD-urile. Cand le-am descoperit si preturile, m-am calmat instant, nu erau o solutie completa. Astfel am ajuns sa caut, pe langa SSD-ul pentru OS, o solutie de stocare de capacitate mare, cat mai silentioasa.

Dupa ce am schimbat vreo 3 modele, dupa auzite de la prieteni si citite de pe forumuri si review-uri, am zis sa incerc sa „ascult” si de specificatiile producatorilor. Astfel am descoperit un model special, care in „seek mode” scotea cu doar 1 decibel mai mult decat in idle. Interesant. Din experienta, comparatia decibelilor din specificatii nu e foarte relevanta intre hard discuri de la producatori diferiti, dat fiind ca folosesc metodologii diferite pentru teste, astfel ca am incercat sa caut in alte parti hard discuri care sa aiba acel delta=DBseek-DBidle cat mai mic, si DBidle cat mai mic. Majoritatea modelelor nici nu se apropiau de acel 1 decibel diferenta, si asa am ramas la descoperirea initiala, WD5000AADS. Mai era o problema: cat inseamna 21 dB (22 in seek) din laboratoarele WD in viata de zi cu zi? [/Boring story]
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Last edited by iulli; 01-06-2014 at 20:38.
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Old 29-11-2010, 12:45   #3
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Cat inseamna 21 dB?
Zilnic schimb harduri in sistem, si interne, si externe, si de laptop (2.5”) si de desktop (3.5”). Intotdeauna cand acestea pornesc, daca le tin in mana, simt o vibratie ori soc, mai mic(ă) ori mai mare, in functie de hard. Cu AADS-ul de 500 de GB a fost altfel.

L-am legat din mers, si, pentru ca nu am simtit nimic, am tras rapid o „concluzie”: „Baga-mi-as picioarele, l-am ars!”. Dar cand m-am intors spre monitor vad, printre altele, „SATA Port 02: WD5000AADS”. L-am oprit, repornit cu hardul in mana: soc, vibratie/miscare la pornire insesizabila. Sunet zero. Dupa cateva secunde, am inchis si eu gura ramasa casca, si am dus hard-ul la ureche.

Nici un suierat nu se auzea, ba chiar si SSD-ul cu OS-ul se auzea mai tare decat…. Daaaa, si marmota invelea Sandy Balls in staniol… Nu, evident, fiind o componenta in miscare, hard-ul se aude. Tinut in mana, e mut, nu vibreaza. Dus la ureche, se aude un zgomot usor, dar asemanator mai mult unui „coil noise” decat unui motor. 99.9% insesizabil la o distanta mai mare de 50 cm, ori intr-o carcasa.
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Old 29-11-2010, 12:47   #4
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Ca tot l-am laudat atata, hai sa vedem daca "tace si face". Mai intai,

Metodologie:

Hardurile au fost montate in carcasa (adica nu erau aruncate aiurea pe undeva), la orizontala.

Sistemul de test a avut urmatoarea configuratie, toate componentele ruland stock:

Intel Core2Duo E8400
Kingston Hyperx 2x2 GB 1066 MHz
DFI DK P45-T2RS+ (controller ICH10R)
Gainward GTS 250
Kingston V 30 GB (OS)
2x Western Digital WD5000AADS
Cougar Power 700 W
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Last edited by iulli; 29-11-2010 at 13:06.
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Old 29-11-2010, 12:52   #5
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Teste


Testele sunt grupate in doua mari categorii, teste sintetice si utilizare de zi cu zi.
Testele sintetice cuprind cateva dintre cele mai populare softuri din domeniu, mai exact:

HD Tune
HD Tach
ATTO Disk Benchmark

Testele de utilizare de zi cu zi sunt copieri propriu-zise, a diferitelor tipuri de fisiere foarte des intalnite. Mai exact, am creat 4 pachete:

*ISO: Un singur fisier ISO, de 3 GB
*Film: 3 fisiere video, fiecare de 700 MB
*Foto/muzica: Imagini de dimensiuni intre 2,5 si 5 MB, exact cum intalnim in cazul fotografiilor de rezolutie mare, ori al MP3-urilor; 546 fisiere, total 2 GB
*Office: Documente PDF si Word, 3230 de fisiere, total 2 GB.

Rezultatele va invit sa le urmariti in continuare.
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Last edited by iulli; 29-11-2010 at 13:06.
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Old 29-11-2010, 12:57   #6
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--Teste sintetice--

HD Tune

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Last edited by iulli; 29-11-2010 at 13:05.
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Old 29-11-2010, 13:01   #7
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HD Tach

Quick bench (8 MB)


Long bench (32 MB)
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Old 29-11-2010, 13:03   #8
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ATTO Disk Benchmark


64 MB File length


256 MB File length
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Old 29-11-2010, 13:05   #9
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--Teste "practice"--

Pentru aceste teste din viata de zi cu zi, am ales sa fac copierile cu Total Commander. Astfel, voi atasa pentru fiecare caz, printscreen-uri cu viteza inregistrata la inceputul copierii si cat mai aproape de final (in attach aveti si 25%, 50%, 75%). Trebuie sa mentionez ca TC afisa, uneori viteza de copiere abia dupa ce trecea de unele din aceste puncte, deci nu in fiecare caz veti gasi inceputul si sfertul copierii.
La copierea de pe alt drive pe cel testat a fost folosit ca sursa SSD-ul Kingston, viteza lui de citire fiind destul de mare incat sa nu limiteze transferul.

Copiere ISO: SSD->AADS





Copiere ISO: AADS->AADS




Copiere Video: SSD->AADS





Copiere Video: AADS->AADS


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Daca as avea un leu pentru fiecare data cand am zis ca nu mai beau, as avea bani sa ma fac muci.

Last edited by iulli; 29-11-2010 at 13:28.
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Old 29-11-2010, 13:36   #10
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Copiere Foto: SSD->AADS





Copiere Foto: AADS->AADS





Copiere Office: SSD->AADS





Copiere Office: AADS->AADS


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Old 29-11-2010, 13:49   #11
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Mda, parca lucrurile nu sunt chiar atat de roz, nu? Adica, 5400 RPM, dar, totusi, ma asteptam la performante mai bune. Asa am ajuns la decizia sa mai iau inca un exemplar si sa le leg pe ambele in RAID 0:


Copiere ISO: SSD->RAID





Copiere ISO: RAID->RAID





Copiere Video: SSD->RAID





Copiere Video: RAID->RAID


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Old 29-11-2010, 13:56   #12
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Copiere Foto: SSD->RAID





Copiere Foto: RAID->RAID





Copiere Office: SSD->RAID





Copiere Office: RAID->RAID


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Old 29-11-2010, 14:16   #13
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Concluzii


Western Digital WD5000AADS este un produs adresat unei nise a pietei, cea a hard discurilor ultra silentioase, si satisface foarte bine cerinta principala a maniacilor ce reprezinta aceasta nisa. Desi de unul singur, nu impresioneaza prin vitezele atinse, intr-o configuratie RAID 0, acesta dovedeste ca poate face fata cu brio cerintelor de zi cu zi, fara ca zgomotul sa-si faca cunoscuta prezenta.
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