Solved

Hitachi HTS725032A9A364 vs Seagate ST320LT007 - 9ZV142 : better MTBF & performance

Posted on 2012-12-26
5
1,274 Views
Last Modified: 2016-11-23
Hitachi HTS725032A9A364 vs Seagate ST320LT007 - 9ZV142

I'm looking at the above two HDDs, the Hitachi HDD comes
with Lenovo X220 while the Seagate HDD comes with Dell
E6230.  Both have 7200rpm.

Q1:
Which of the two has better MTBF (as I had a few HDD
crashes before)

Q2:
Which has better IO performance/throughput?
Link below has specs for Hitachi, anyone has the
specs for Seagate?

http://www.ebay.com/ctg/Hitachi-Travelstar-7K500-HTS725032A9A364-320-GB-Internal-7200-RPM-2-5-0A72333-Hard-Drive-/82928111
0
Comment
Question by:sunhux
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
5 Comments
 
LVL 9

Accepted Solution

by:
newmath earned 250 total points
ID: 38722006
0
 
LVL 55

Assisted Solution

by:andyalder
andyalder earned 230 total points
ID: 38722025
0
 

Author Comment

by:sunhux
ID: 38722977
Looks like the seek time for
Hitachi is   : 1 ms
Seagate     : 1.5 ms (track to track seek time)
                    11ms (average seek time, read)

but for external transfer rate, not sure if the following two refers to same thing:
Hitachi      : 300Mbps
Seagate     : 3Gbps  (I/O data-transfer rate, max) ??
0
 
LVL 55

Assisted Solution

by:andyalder
andyalder earned 230 total points
ID: 38723123
300Mbps = 3Gbps because of the 8B/10B line encoding, to send 8 bits over the wire it is encoded into 10 bits. Same applies to many serial/parallel encodings, gigabit Ethernet has a clockrate of 1.25GHz for example. The max transfer rate isn't that important since the disk is nowhere as fast as the interface speed.
0
 

Author Comment

by:sunhux
ID: 38724243
The HDD model that comes with X220 our corporate get is
actually HTS723232A7A364 :
  http://reviews.cnet.com/laptop-hard-drives/hitachi-travelstar-z7k320-hts723232a7a364/4507-9997_7-34207790.html

Track-to-Track Seek Time 1 ms
Average Latency 4.2 ms

Shock Tolerance 225 g @ 1ms half-sine pulse (operating) / 1000 g
@ 1ms half-sine pulse (non-operating)
0

Featured Post

Back Up Your Microsoft Windows Server®

Back up all your Microsoft Windows Server – on-premises, in remote locations, in private and hybrid clouds. Your entire Windows Server will be backed up in one easy step with patented, block-level disk imaging. We achieve RTOs (recovery time objectives) as low as 15 seconds.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

This article is an update and follow-up of my previous article:   Storage 101: common concepts in the IT enterprise storage This time, I expand on more frequently used storage concepts.
We look at whether swapping a controller board on a failed hard drive is likely to solve the problem.
This video teaches viewers how to encrypt an external drive that requires a password to read and edit the drive. All tasks are done in Disk Utility. Plug in the external drive you wish to encrypt: Make sure all previous data on the drive has been …
This Micro Tutorial will teach you how to reformat your flash drive. Sometimes your flash drive may have issues carrying files so this will completely restore it to manufacturing settings. Make sure to backup all files before reformatting. This w…

751 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question