On Jun 14, 2005, at 11:51 AM, D. Goss wrote:
On Jun 14, 2005, at 8:48 AM, Wojciech Puchar wrote:
think twice before making RAID-5 array. are you sure small writes
will not be too common?
No, you are on to something - I will be making small writes /
parity calculations. This is going to be a web server but it is
for clients and they do have sites running with SQL backends and
not just static HTML content.
i think buying 4 80GB FAST IDE/SATA drives and arranging it as
RAID-10 will give you 160GB of FAST and protected storage.
performance gain using mirror+strip will likely offset this of
using faster 15k rpm drives.
and it will be for sure cheaper. you may put 6 drives (RAID-10)
and even larger drives and still have cheaper alternative and even
faster. and MUCH more space.
Sure, it will be cheaper. For me it's too late, I've purchased the
4 x SCSI 15k drives I need for this project. I have bought mostly
unopened, in-box but secondhand IBM drives/sleds. They are still
expensive but certainly not the (what I consider) insane prices for
the same drives IBM direct. I'm paying around 1/3 of "list".
The SCSI disks will certainly last longer. If you can do the RAID 1
+0 with the SCSI you will probably be that much further ahead...
Chad
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