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Hardware Support Discussions related to using various hardware setups with SageTV products. Anything relating to capture cards, remotes, infrared receivers/transmitters, system compatibility or other hardware related problems or suggestions should be posted here.

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Old 07-17-2006, 11:14 AM
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Kirby Kirby is offline
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Recording drive question (calling all hard drive experts!)

Ok, I am re-doing my Sage server again, and want to get down to one large recording drive to be located on the server to house all recordings while they are made, and until I move them to a storage server on the network. With that said, I am planning on at least a 250GB drive, possibly larger, SATA2, 16MB cache if possible.

I will have 2 R5000 units recording to the drive, plus 1-2 OTA tuners, and possibly 1-2 QAM tuners at some point (yeah I'm dreaming!), but I would expect the maximum total number of High def streams to be recorded at once to be 3, 4 in rare situations. At 19mbit/sec, 4 streams should not cause any issue. Correct? Where my question really comes into play though is with the new perpendicular recording drives. Will these cause issues? More or less fragmentation? Other issues? Right now I'm leaning towards a Seagate 7200.10 320GB SATA2 drive, which seems like a decent drive, but the whole perpendicular recording thing got me wondering if its a smart move or not.
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Sage Server: HP ProLiant N40L MicroServer, AMD Turion II Neo N40L 1.5GHz Dual Core, 8GB Ram, WHS2011 64bit, Sage 7.1.9 WHS, HDHR (1 QAM, 1 OTA), HDHR Prime 3CC, HD-PVR for copy-once movie channels
HTPC Client:Intel DH61AG, Intel G620 cpu, 8GB ram, Intel 80GB SSD, 4GB RamDisk holding Sage/Java/TMT5
Sage Client:Sage HD-200 Extender
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Old 07-17-2006, 11:21 AM
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GKusnick GKusnick is offline
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Perpendicular recording has to do with how the heads write bits onto the platter. It's purely a magnetic technology thing and has no software impact whatsoever.
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Old 07-17-2006, 11:24 AM
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I know, I was asking about fragmentation on such a drive, whether it will be an issue opposed to parallel recording media. In theory I would assume no, but just wanted to verify.
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Sage Server: HP ProLiant N40L MicroServer, AMD Turion II Neo N40L 1.5GHz Dual Core, 8GB Ram, WHS2011 64bit, Sage 7.1.9 WHS, HDHR (1 QAM, 1 OTA), HDHR Prime 3CC, HD-PVR for copy-once movie channels
HTPC Client:Intel DH61AG, Intel G620 cpu, 8GB ram, Intel 80GB SSD, 4GB RamDisk holding Sage/Java/TMT5
Sage Client:Sage HD-200 Extender
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Old 07-17-2006, 11:40 AM
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GKusnick GKusnick is offline
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Fragmentation is a software thing, a result of the way the OS organizes blocks of data on disk. Whether the individual bits are recorded longitudinally or perpendicularly is handled internally by the drive hardware and is completely invisible to the OS.

To use a crude analogy, longitudinal v. perpendicular recording is like parallel parking v. angled parking. Drive fragmentation is like city zoning rules on where parking lots can be built. The one doesn't affect the other.
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Old 07-17-2006, 12:01 PM
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ok. thanks..
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Sage Server: HP ProLiant N40L MicroServer, AMD Turion II Neo N40L 1.5GHz Dual Core, 8GB Ram, WHS2011 64bit, Sage 7.1.9 WHS, HDHR (1 QAM, 1 OTA), HDHR Prime 3CC, HD-PVR for copy-once movie channels
HTPC Client:Intel DH61AG, Intel G620 cpu, 8GB ram, Intel 80GB SSD, 4GB RamDisk holding Sage/Java/TMT5
Sage Client:Sage HD-200 Extender
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