Ssd vs sshd vs hdd vs velociraptor and others...


F

freejazz

Hi,  i want to open a thread about storage units and their
relative configurations..
About two years ago i assembled a pc with 64Gb Ocz ssd drive, two
(160Gb each one) velociraptor configurated in raid 0 and a 1Tb
size hdd.
I installed os (Win7) on ssd with some apps and my documents on
velociraptors.  Others things as video, music, etc. I let on 1Tb
drive.
In these days i have read something about these storage units and
i have some questions to do. F.e. I read that to optimize the
data into hybrid system you need to configurate  a specific
software that load not only os but usual data and apps as sshd to
do with caching..
Which is the software and is it advisable configurate it?
The cost for Gb of Velociraptor is about 0,70 $ instead an ssd
f.e. is about 0,90 $.
Therefore is still convenient to buy a Velociraptor that is not
after all so cheap comparing itself to ssd (even considering
others features as access time, read and write speed, etc. that
are smaller into Velociraptor too)??
About SSDs and their configuration in Raid someone advised me that
for SSDs is very negligible the increment speed.
What do you think?
 
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P

Paul

freejazz said:
Hi, i want to open a thread about storage units and their
relative configurations..
About two years ago i assembled a pc with 64Gb Ocz ssd drive, two
(160Gb each one) velociraptor configurated in raid 0 and a 1Tb
size hdd.
I installed os (Win7) on ssd with some apps and my documents on
velociraptors. Others things as video, music, etc. I let on 1Tb
drive.
In these days i have read something about these storage units and
i have some questions to do. F.e. I read that to optimize the
data into hybrid system you need to configurate a specific
software that load not only os but usual data and apps as sshd to
do with caching..
Which is the software and is it advisable configurate it?
The cost for Gb of Velociraptor is about 0,70 $ instead an ssd
f.e. is about 0,90 $.
Therefore is still convenient to buy a Velociraptor that is not
after all so cheap comparing itself to ssd (even considering
others features as access time, read and write speed, etc. that
are smaller into Velociraptor too)??
About SSDs and their configuration in Raid someone advised me that
for SSDs is very negligible the increment speed.
What do you think?

Using a simple SSD for your boot drive, is the best improvement
you can get on a computer.

If you need better bulk storage speed, build a RAID0+1 or
RAID1+0 array using commodity hard drives. That won't give
you good access times, but will give higher sequential speed.

http://en.wikipedia.org/wiki/Nested_RAID_levels

If you're a software developer, and always compiling the same
files over and over again, put them on the SSD.

If you're a video editor, place your content on a RAID0+1.
The access time isn't very good, but the sequential speed
can be a lot faster. If you're processing 4K uncompressed
video, you really need some kind of array solution
for that. An Areca controller plus a boat load of hard
drives can do that for you. And get you at least 800MB/sec
sequential speed, when enough drives are used in each RAID0 array.

12 port Areca

RAID_1_mirror --------- six_drives_in_RAID_0_at_800MB/sec
--------- six_drives_in_RAID_0_at_800MB/sec

If you can find a controller card with more ports than that,
you can make another RAID0 array for doing backups :)

HTH,
Paul
 

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