Hasil Test: Harddisk Hitachi Paling Awet, Seagate Paling Gampang Rusak

Sebuah studi dari Storelab, sebuah perusahaan perbaikan data baru baru ini mengeluarkan informasi penting tentang umur harddisk. Data dikumpulkan dalam jangka waktu lama, sesuai dengan pemakaian dan kerusakan harddisk yang mereka temukan.

Laporan ini menjadi kontroversi mengingat banyak harddisk cacat atau rusak yang dibuat oleh vendor pabrikan, dan pentingnya data yang disimpan pada harddisk komputer.

Penguna komputer, khususnya pembeli komputer secara lengkap tidak pernah tahu apa merek harddisk yang mereka gunakan. Terkadang banyak pembeli terbuai dengan masa garansi yang panjang, dan menjamin bahwa harddisk mereka akan digantikan bila rusak. Harddisk rusak akan diganti, bagaimana dengan nasib data penting. Bisa dijawab oleh produsen harddisk “tanyakan pada rumput yang bergoyang”.

Harddisk untuk home PC mungkin akan kehilangan data penting seperti file musik atau foto yang menjadi koleksi pribadi. Tetapi bagi kalangan profesional, data penting yang dibuat berbulan bulan bisa saja hilang oleh rusaknya harddisk.

Berapa lama umur harddisk bisa bekerja. Jawabannya tidak pernah sama. Satu vendor umumnya bisa mencapai 3.5 tahun, tetapi ada yang lain hanya sampai 1.5 tahun. Kapasitas dan model membedakan kualitas sebuah dan umur pemakaian sebuah harddisk.

Tentang produsen pembuat harddisk, pemakai, persentasi kerusakan dan umur pemakaian

Secara umum ada 6 produsen besar pembuat harddisk yaitu Fujitsu / Toshiba, Hitachi, Samsung, Seagate, dan Western Digital.

Pada penelitian dilakukan dari 4000 unit harddisk lebih dengan format 3.5 dan 2.5 inch. Storelab melakukan perbandingan dari data yang dikumpulkan sesuai klasifikasi produk, merek dan kapasitas serta model.

Menurut iSuppli , pemakaian harddisk pada pasar komputer. Seagate memimpin penjualan harddisk Dunia, di ikuti oleh Western Digital

Menurut data Storelab yang didapat dari catatan kerusakan harddisk yang ada pada mereka. Kerusakan harddisk terbesar terjadi pada produk terbesar yaitu Seagate yang memimpin penjualan harddisk di Dunia. Hampir 2x lipat dari pangsa pasar harddisk yang ada, setara 31%

Walaupun pemakaian harddisk di Rusia hanya berjumlah 40% saja dari seluruh merek harddisk Seagate. Tetapi kerusakan harddisk dari produsen lain jauh lebih rendah, seperti Hitachi dan Western Digital hanya tercatat 11% dibawahnya.

Di bawah ini menurut data statistik kerusakan harddisk menurut persentasi. Probabilitas dari angka di bawah ini menunjukan semakin besar jumlah harddisk yang rusak yang didapat oleh StoreLab

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Indikator kedua digunakan menurut umur pemakaian dan berapa lama harddisk mampu bekerja sebelum rusak.

Perancang harddisk seperti Insinyur pembuat harddisk boleh mengatakan harddisk mereka mampu bekerja bertahun tahun bahkan puluhan tahun. Tetapi kesimpulan yang mereka lakukan hanya dilakukan berdasarkan angka, dan bukan test sebenarnya. Mengingat tidak mungkin sebuah harddisk baru dijual setelah dilakukan uji coba bertahun tahun untuk mendapatkan angka MTBF.

Apa yang mengejutkan dari data yang di dapat oleh StoreLab. Harddisk ternyata ada yang umurnya hanya 1.5 tahun saja. Sedangkan terlama bekerja dari merek Hitachi dan Western Digital, mampu bekerja sampai 3.5 tahun sebelum terindikasi rusak.

Dari merek Seagate hanya tipe 7200.10 yang mampu bekerja lebih dari 3 tahun. Samsung dan Toshiba/Fujitsu juga bernasib sama, hanya bekerja dalam waktu 1.5 sampai 2 tahun saja dan masuk ke StoreLabs untuk dilakukan forensik data.

 

A few months ago we asked and answered one of computing’s oldest questions: How long do hard drives actually last? That story missed one vital piece of information, though — who makes the most reliable hard drives? Well, we can now answer that question too.

Just like last time, this information comes from Backblaze, an all-you-can-eat online backup company. Backblaze currently has around 28,000 hard drives powered up and constantly spinning, storing a total of around 80,000 terabytes (80 petabytes) of user data. As you can imagine, it is very much in Backblaze’s interests to ensure that it buys reliable hard drives. Every time a drive fails, it takes considerable time and effort to pull the drive, slot in a new one, and rebuild the RAID array.

Which hard drive manufacturer is the most reliable?

Backblaze breaks down its data in two ways — by manufacturer, and by specific drive. The data is fairly complex, but we’ll try to break it down into morsels of easy-to-digest, actionable information. (Read: How a hard drive works.)

As of the end of December 2013, Backblaze had 12,765  Seagate drives, 12,956 Hitachi drives, and 2,838 Western Digital drives. These drives are not all the same age — some are almost four years old, while many were installed in the past year. The odd numbers are because Backblaze basically buys whatever drive offers the most competitive dollar-per-gigabyte ratio, with reliability being a secondary factor. For most of the last four years, Seagate and Hitachi have offered the best price-per-gig, with Western Digital Red drives only now becoming a viable option for Backblaze.

As you can see from the graph above, Hitachi drives are by far the most reliable. Even though most of Backblaze’s Hitachi drives are now older than two years, they only have an annual failure rate of around 1%. The “annual failure rate” is the chance of a drive dying within a 12-month period. After three years of being powered up 24/7, 96.9% of Hitachi drives are still running.

Western Digital is slightly worse, but still impressive: After three years of operation, 94.8% of Western Digital drives are still running. Backblaze lists the annual failure rate of the WD drives at around 3% (I don’t think the numbers quite add up, but I could be wrong).

Seagate drives are not very reliable at all. As you can see in the second graph below, Seagate drives are fine for the first year, but failures quickly start building up after 18 months. By the end of the third year, just 73.5% of Backblaze’s Seagate drives are still running. This equates to an annual failure rate of 8-9%.

hard drive survival rate in months hitachi seagate wd  Hasil Test: Harddisk Hitachi Paling Awet, Seagate Paling Gampang Rusak

In Backblaze’s words: “If the price were right, we would be buying nothing but Hitachi drives. They have been rock solid, and have had a remarkably low failure rate.”

Which single hard drive is the most reliable? (And which is the least?)

In general, then, if you want a reliable hard drive you should go for a Hitachi or Western Digital. If you’re looking for a specific drive model that has good longevity, the numbers break down interestingly.

The two best drives, with 0.9% annual failure rate over more than two years, are the Hitachi GST Deskstar 5K3000, and Hitachi Deskstar 7K3000. Get one of these drives and you’re almost guaranteed (97-98%) to make it through three years without a dead drive. If you want a 4TB drive, the Hitachi Deskstar 5K4000 is your best bet — it has a slightly higher failure rate, but still below WD and Seagate’s offerings.

As far as poor reliability goes, Seagate has some nasty offenders. The 1.5TB Seagate Barracuda 7200 (an old drive now) has a very high chance of failing after three or four years. Even the newer 3TB Seagate Barracuda has a pretty high failure rate, at 9.8% per year.

Backblaze also notes that some drives (the Western Digital Green 3TB and Seagate Barracuda LP 2TB) start producing errors as soon as they’re slotted into a storage pod. They think this is due to the large amounts of vibration caused by thousands of other hard drives. (They also think that their aggressive spin-down setting, which is ostensibly to save power, causes a lot of wear to the drive.)

Hit up Backblaze’s website for a full list of hard drives and their statistics.

Samsung and Toshiba

Unfortunately, Backblaze doesn’t have a statistically significant number of Samsung or Toshiba drives installed. Even so, because Samsung’s hard drive division was acquired by Seagate in 2011, it’s hard to say if an older, pre-acquisition Samsung drive would be more or less reliable than a post-acquisition drive. Toshiba/Fujitsu still have a reasonable wedge (~10%) of the market share pie, but unfortunately we’ll have to wait for another study to see how they compare to Seagate, Western Digital, and Hitachi.

On the topic of acquisitions, you may also remember that Western Digital acquired Hitachi GST almost two years ago. If we compare Hitachi drives from before and after the acquisition, the annual failure rate seems to stay the same (around 1%). It would seem that Western Digital and Hitachi have the reliable hard drive business sewn up — and this is before we’ve had a chance to see what WD/HGST’s helium-filled hard drive can do!

Sumber: www.forumbebas.com – www.extremetech.com

CATATAN : Artikel ini sudah dipublish sejak 5 tahun yang lalu. Informasi di dalamnya kemungkinan sudah tidak relavan dengan saat ini. Mohon dibaca dengan bijak, dengan melihat informasi terbaru/sumber-lain sebagai penyeimbang.

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