[an error occurred while processing this directive]
We haven't reviewed SCSI drives since November last year. Moreover, it is being discussed now whether such reviews are topical at all. That is why if you have pros or cons such reviews of SCSI drives or comments on how they should look like, please, send them here. In my opinion, people buying SCSI drives are well aware of what tasks they are going to be used for, that is why such reviews should contain less analeptics and more facts because competent users are able to draw conclusions themselves. But all your suggestions are welcome. Well, this review is supplemented with "unfiltered" Intel IOMeter results. It is possible that some people are interested not in average but in the maximum response time etc.
So, we have tested a 18GB Ultra160 SCSI drive from the IBM Ultrastar 36Z15 line - IC35L018UWPR15. The platters are glass substrate; the DFT (Drive Fitness Test) is supported, as well as the load/unload ramp technology).
The drive will be compared with 15,000 models reviewed last time
- a model from the Seagate Cheetah X15 36LP line: ST336752LW and one from
the Fujitsu MAM3xxx line: MAM3367MC. Below is a table of the specified
characteristics of these lines.
|Fujitsu MAM3xxx||Seagate Cheetah X15 36LP||IBM Ultrastar 36Z15|
|Seek Time Average (ms)||3.5||3.6||3.4/4.2|
|Average Latency (ms)||2.00||2.00||2.00|
|Internal Data Rate (Mbits/sec)||320-710||522-709||453-647|
|Sustained Throughput (MB/sec)||-||51-69||36.6-52.8|
|Buffer Size (MB)||8||8||4|
|Sound Power (Bels, Idle)||3.6/3.9||3.5||3.8/4|
|Typical Power Draw (W, Idle)||9.5/11.5||10.5/11.5||11/13.5|
The IBM's model doesn't look impressive as compared with the contestants - it yields to them in almost all parameters except the seek time of the 18GB model. But, as you know, each manufacturer has its own technique of measuring parameters, that is why let's turn to the tests.
All three tests were used to measure the access time. In the IOMeter test we took the Average Response Time for the 100% random read template at Queue Depth equal to 1.
On the whole, the results coincide with the specs - the IBM is ahead. The ZD WinBench 99 test gives results closest to the specs.
The HDTach provides average results of read/write speeds.
Nothing unexpected so far - the IBM falls behind its competitors. Let's take a look at the linear read speeds at the beginning and end of the disc obtained with the ZD WinBench.
Well, it was possible not to use these tests - it was enough to look at data in the table. We got nothing new. But, still, let me show you a diagram of the linear reading of the tested disc.
Well, it's time to turn to more informative tests.
With the FAT32 the Ultrastar 36Z15 catches up with the Fujitsu MAM3xxx, and with the NTFS it beats the latter.
Now the synthetic tests:
These results are very similar. In case of the maximum loads the Ultrastar loses (especially when the Server and Database templates are used). The complete results for the Server, Workstation, Database, Streaming Read/Write, Random Read/Write templates are attached (csv file, Zip archived - 7.818 bytes).
Unfortunately, we can't compare correctly the obtained results with the previous ones for this parameter because today even an air-conditioner doesn't help... With the same temperature measurement technique we got 48 degrees C.
I didn't work much with SCSI drives before, that is why I have nothing to compare with. But it is still much louder than IDE drives :)
Write a comment below. No registration needed!
|blog comments powered by Disqus|
|Most Popular Reviews||More RSS|
AMD Phenom II X4 955, Phenom II X4 960T, Phenom II X6 1075T, and Intel Pentium G2120, Core i3-3220, Core i5-3330 Processors
Comparing old, cheap solutions from AMD with new, budget offerings from Intel.
February 1, 2013 · Processor Roundups
Inno3D GeForce GTX 670 iChill, Inno3D GeForce GTX 660 Ti Graphics Cards
A couple of mid-range adapters with original cooling systems.
January 30, 2013 · Video cards: NVIDIA GPUs
Creative Sound Blaster X-Fi Surround 5.1
An external X-Fi solution in tests.
September 9, 2008 · Sound Cards
The first worthwhile Piledriver CPU.
September 11, 2012 · Processors: AMD
Consumed Power, Energy Consumption: Ivy Bridge vs. Sandy Bridge
Trying out the new method.
September 18, 2012 · Processors: Intel
|Latest Reviews||More RSS|
Retested all graphics cards with the new drivers.
Oct 18, 2013 · 3Digests
Added new benchmarks: BioShock Infinite and Metro: Last Light.
Sep 06, 2013 · 3Digests
Added the test results of NVIDIA GeForce GTX 760 and AMD Radeon HD 7730.
Aug 05, 2013 · 3Digests
Gainward GeForce GTX 650 Ti BOOST 2GB Golden Sample Graphics Card
An excellent hybrid of GeForce GTX 650 Ti and GeForce GTX 660.
Jun 24, 2013 · Video cards: NVIDIA GPUs
Added the test results of NVIDIA GeForce GTX 770/780.
Jun 03, 2013 · 3Digests
|Latest News||More RSS|
ASUS Launches R9 200, R7 200 Series, Matrix R9 280X Graphics Cards
Copyright © Byrds Research & Publishing, Ltd., 1997–2011. All rights reserved.