geekbrains
Senior Member
I guess the TS is looking for an easy portable external HDD..I might be wrong..
3.5" or 2.5" HD more reliable?
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I guess the TS is looking for an easy portable external HDD..I might be wrong..
geekbrains
Senior Member
originalsin
New Member
Not obvious from TS post. If indeed it is about mobility, then pick a 2.5", 5400rpm. Mobility & Reliability are quite difficult to be achieved together. Perhaps RAIDON's R2 is the solution.
originalsin
New Member
The only RAID5 that has given problems to me is the software-based solution for SATA drives in the Windows OS. On NAS and enterprise storage, those brands that I have used are all doing well. The choice of RAID1 or 5 or 6 or 1+0 are all depending on the needs for space or speed.
So, when picking a NAS, it is important to get some reputable, NAS-focus company and brand. There are so many brands now selling NAS, even those used to be just in the wifi arena.
That heavily contradicts the purpose of RAID5. Every RAID (except RAID0) is built with the intention of creating redundancy for resilience (hence the name) to cover the outage of a single disk by keeping the necessary recovery information on the other disk(s).
Large industry storage solutions are based on RAID5 and the swapping of single disks is a standard activity, even without taking the storage offline. Best to leave the RAID management to the storage. Plenty of offerings in the market.
geekbrains
Senior Member
Though I don't have any branded external HDD's, most of my friends had all these brands that you've mentioned. All of them had at least 1 incident of a failed HDD. The worst being Maxtor / Seagate which my aunt lost the complete data twice and paid 1200+ $ to CBL data recovery once to recover some important data
which exclosure support two or more bays for 2.5" (not 3.5") harddisks and support mirror? Is there such a thing in the 1st place?:think:
QNAP supports both in the same enclosure
Though I don't have any branded external HDD's, most of my friends had all these brands that you've mentioned. All of them had at least 1 incident of a failed HDD. The worst being Maxtor / Seagate which my aunt lost the complete data twice and paid 1200+ $ to CBL data recovery once to recover some important data
Agree. I had IBM hard disks .. highly regarded by some people .. 5 failed over 7 years. The Samsung, praised for silent operations - 3 dead. But I noticed during my research for these incidents that cooling is an important factor, especially when no aircon is used and when using HDD with 7200 rpm. How many people really check the airflow? New PC cases now come with better airflow and more fans. But I'm still skeptical about tight enclosures for HDD. Using HDD with 5400rpm now - running much cooler and the loss of performance is not really noticeable for my purposes.
jackzhangxiao
New Member
2.5 and 3.5 are the same. if you dun take care of it, even it is a 4.5, it still fail
geekbrains
Senior Member
LOL, I completely agree with you dude. Most of the failed HDD's that I had were all IBM
But dramatically the technology and the manufacturing units of IBM acquired by HDS improved the failure rate significantly. Though cooling plays a major part, most of these corruptions I have seen are due to zero parking error, head misalignment, scratched platters due to head crash (Some of these can be attributed due to temperature but majority of them are due to drops and knocks). Ever heard of a weak air filter which let dust particles in and scratched those platters :dunno:
geekbrains
Senior Member
Not really, I've been running my Linux off from my external HDD for years now (40GB Hitachi ATA)
UandMe
New Member
geekbrains
Senior Member
yyD70S
Senior Member
Thank you for your feedback.
Appreciate.
Appreciate.
Though I don't have any branded external HDD's, most of my friends had all these brands that you've mentioned. All of them had at least 1 incident of a failed HDD. The worst being Maxtor / Seagate which my aunt lost the complete data twice and paid 1200+ $ to CBL data recovery once to recover some important data
LOL, I completely agree with you dude. Most of the failed HDD's that I had were all IBM
Most IBM's died with the same pattern: rhythmic 'click - click' of about 1s. Thermal calibration error. Only two had other issues. The result was always the same: no data access, everything lost. Luckily most of them only carried only the OS partitions.
What bugged me also were the recommendations about environmental conditions. I try to monitor my disks with smartmontools, the reading shows the temperature of the internal sensor. But in most documentations one can only find the air temperature, mostly without consideration of a cooling fan and the resulting cooling by airflow. Even a question to IBM support was fruitless, I only got standard template answers.
originalsin
New Member
I saw some 2.5" RAID products at MemoryWorld at Funan, when I was buying a NAS there.
Backup and Redundancy setup are 2 separate stuff.
If you want to archive your picture,
then Backup is the more idea solution.
Redundancy is more appropriate when Turnaround time is critical.
No matter how great your setup is,
if your PC got cart away, everything's gone :bsmilie:
With portable backup, you can have 1 copy at home, in office etc.
If you want to archive your picture,
then Backup is the more idea solution.
Redundancy is more appropriate when Turnaround time is critical.
No matter how great your setup is,
if your PC got cart away, everything's gone :bsmilie:
With portable backup, you can have 1 copy at home, in office etc.
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