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Offline Tahoe

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Re: Advice Requested
« on: December 10, 2007, 07:31:47 PM »
Don't confuse SAN with NAS. A SAN is generally fully fibre channel SCSI using fibre channel switches, I don't know what amount of data you are talking about, but the growth should be pretty hefty if you want to consider SAN. (you can later on add cheap SATA disk cabinets, but we are talking pretty hefty storage here, we just bought a new SAN at work with is now "just" 8TB, but can grow to 173TB, servicing 128 servers.
A SAN is by standard fault taulerant, runs RAID 5 including hot spares. All fibre switches/interface cards are redundant (dual).

NAS is nice and all, but I would still go for DAS (Direct-Attached-Storage) if a SAN is out of your league.
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Offline Tahoe

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Re: Advice Requested
« Reply #1 on: December 10, 2007, 07:32:44 PM »
Quote

motorollin wrote:
Try to get one with RAID - at least mirrored, ideally striping with parity. That way your SAN isn't a single point of failure - if one of the disks goes down, you can rebuild the array from the remaining disks. For true redundancy you should have two of these, in case the whole array goes down (e.g. power surge kills all of the disks). Iomega and Buffalo all do SAN drives with built-in RAID (i.e. they contain multiple physical disks which are exposed as a single share).

--
moto


Those are NAS, not SAN... :)
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Offline Tahoe

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Re: Advice Requested
« Reply #2 on: December 10, 2007, 08:23:05 PM »
Quote

Hans_ wrote:
Actually, ethernet SAN devices do exist. IIRC, they use the iSCSI protocol.


I know, but there is no comparing a SAN to a NAS, not on specifications, not on pricing. Even iSCSI SAN's are much, much more expensive then NAS'.
The EMC SAN we run at work has both Fibre and iSCSI, there are models which run Fibre only or iSCSI only.

Reading the orginals poster's question though I figure he is using 3 servers, forget about SAN, it is not, and will never be cost effective even when compared to DAS.
Greetings from Wilnis, The Netherlands
Now owning ALL Amiga models and most; if not all; flavours of them...My Amiga Museum