SNAP 4000 Errors and Limits

[Phoenix32]

Originally Posted by cianwill

Hang on a second, mine has 4x400 drives in it and runs off the original PS. It just would not complete a raid 5 on all 4, even when I added a second PS to suppliment the power. What I haven't tried yet is all that again with 256MB of Ram (which I now have installed). I will get back to you on all that as soon as I can backup all my data before I start trying again.

Duh! You just said 4 x 400. He said 4 x 500. BIG DIFFERENCE! My reply was to his 4 x 500 drives. There is an extra platter in the 500GB. Those extra platters take extra juice to get them moving. Too much extra juice for a 4000. 4 x 400 is okay, 4 x 500 is too much...

[adisor19]

Originally Posted by Phoenix32

Duh! You just said 4 x 400. He said 4 x 500. BIG DIFFERENCE! My reply was to his 4 x 500 drives. There is an extra platter in the 500GB. Those extra platters take extra juice to get them moving. Too much extra juice for a 4000. 4 x 400 is okay, 4 x 500 is too much...

Hmm, well you can always get an external power supply to power up the drives if indeed it prooves to be a lack of power. Anybody tried that yet ?

Adi

[Phoenix32]

Originally Posted by adisor19

Hmm, well you can always get an external power supply to power up the drives if indeed it prooves to be a lack of power.

Adi

Didn't I already say that?

[jontz]

Originally Posted by Phoenix32

Didn't I already say that?

LOL...as Yogi Bera would say: "It's like Deja-Vu all over again!"

[Hallis]

If a standard ATX supply doesnt fit you could use one meant for a Shuttle XPC.

Shane

[adisor19]

Originally Posted by Phoenix32

Didn't I already say that?

Ehr.. ok i need a coffee... I'll reread twice before posting from now on

Adi

[cianwill]

Originally Posted by Hallis

I wonder if it'd be ok to run 300+ drives in a JBOD mode or Raid 1's. I'll be checking that out as soon as i get my 4000

Shane

Yes, both of those ideas work perfectly. The problem is getting 4x 400+ drives into a raid 5 configuration. My 4000 will format all 4 drives and run happily on the original power supply. I just can't seem to get it to go for all 4 drives. I upped the Raid Cache and that did not help. I tell it to do a raid 5 with all drives...it reboots and says format failed. Must tweak some more...

Radio, did you do something special to get your 4x320's to work? Change some debug setting? I really ant to get all 4 of these baby's online!

[re3dyb0y]

Originally Posted by Hallis

If a standard ATX supply doesnt fit you could use one meant for a Shuttle XPC.

Shane

I was thinking that or, something for other similar SFF PSU, or even a large Mini ITX PSU

The PSU could hold it fairly well, i suppose, leaving one or 2 drives on the inbuilt PSU, and you could certainly manage!

[Hallis]

Originally Posted by re3dyb0y

I was thinking that or, something for other similar SFF PSU, or even a large Mini ITX PSU

The PSU could hold it fairly well, i suppose, leaving one or 2 drives on the inbuilt PSU, and you could certainly manage!

And. It would be a fairly simple wiring job to get them to both run in parallel. i THINK that Joe wired up a few ATX PSU's like that a few years back.

Shane

[blue68f100]

Radio, did you do something special to get your 4x320's to work? Change some debug setting? I really ant to get all 4 of these baby's online!

Cianwill, He is using the new 7200.10 drives from seagate. These have 1 less platter - all the related heads, cyl....

[Hallis]

less platters = less power consumption.

[Hallis]

As far as ram on a 4000 is concerned, does it have to be unbuffered, ECC registered, or anything special or will normal PC-133 stuff work because i think I have a few 512's sitting around.

Shane

[Phoenix32]

Mine has standard SDRAM in it (unbuffered non ECC)...

[re3dyb0y]

Yeah, they aint gonna put buffered ECC in it, cause it costs loads more

[Hallis]

Originally Posted by re3dyb0y

Yeah, they aint gonna put buffered ECC in it, cause it costs loads more

That's what i was thinking and hoping.

[re3dyb0y]

Im pretty sure most people like yourself have just had sticks laying around that they've used

And how many people would have EEC buffered laying around?

[Hallis]

Originally Posted by re3dyb0y

Im pretty sure most people like yourself have just had sticks laying around that they've used

And how many people would have EEC buffered laying around?

Hehe I have at least one friend that does.

But, I did find a 128mb stick that works fine. My 512mb wouldnt But since the server only had 64mb in it i consider the upgrade a success none the less.

Shane

[re3dyb0y]

Originally Posted by Hallis

Hehe I have at least one friend that does.

But, I did find a 128mb stick that works fine. My 512mb wouldnt But since the server only had 64mb in it i consider the upgrade a success none the less.

Shane

Wasn't tehre other people reporting similar problems


Think 256 sticks work fine

My LaCie Ethernet Disk due to the board its built on, will only take a max of a 256mb stick in each slot


Ok, 1 friend. How many friends do you have?


Probably quite a small ratio :P

[shadowman]

I guess a 750gb Seagate 16mb cache hard drive would be too large for the 4000 to handle. That would be great to make a 3TB server RAID 5.

Curious,

SM

[Hallis]

Originally Posted by shadowman

I guess a 750gb Seagate 16mb cache hard drive would be too large for the 4000 to handle. That would be great to make a 3TB server RAID 5.

Curious,

SM

It might be interesting to try in JBOD mode.

[blue68f100]

You could run 2 RAID 1 and stay under the 1T OS restriction/Wall.

The newer 7200.10 drives have a lower power consumption than older models. I think the original 30gig Quanium use more power than the 300gigs today.

The 512 meg sticks of PC100/133 are High density, which does not work in the Snaps. Has something to do with paging sizing.

[shadowman]

I will try to setup two 750gb seagate's 16mb cache drives. I will try to get my hands on two 750gb and try them for RAID 5.

I will post my findings.


SM

[blue68f100]

You will be wasting your time in RAID 5 with the 750 gig drives. Any think over 1T has Major Problems. This has been beaten to death multiple times. You can run 4 250gig in raid 5 (max). Or most anything in JBOD, or 2 x RAID 1's. Raid 0 has the same restrictions of RAID 5.

[radio]

Originally Posted by cianwill

Radio, did you do something special to get your 4x320's to work? Change some debug setting? I really ant to get all 4 of these baby's online!

Nope, nothing special. Just upped the memory. Everythihng was going smoothly, but I am starting to notics the drive slow down when I get about 400-500 Gigs on it. I don't know if it's the space used or what. I recently moved a directory with music in it - about 300GB - to a different directory. The operation took less than a minute - just moving pointers - but now it seems really slow. Fixed by upgrading the network - not the snaps fault!

I am looking for similar stories here, but havn't fund much yet. I also want to play with the debug parameters, but I am afraid I'll break something, so without good suggestions, I'm lost.

[radio]

I'm Back.

The 4 320Gb drives in my 4000 work fine, with one exception. Unfortuantely for my usage this little glitch is unacceptable. I took a snapshot of the network usage durring a backup of the snap (so I can reconfigure it.) Notice those regular downward spikes? Here they are every 140 seconds, at the radio station they were every 30 seconds - or is my memory going?



This is on my home network. The same thing happend at the radio station (but every 30 seconds - or is my memory going?) When playing music from the snap, even with very little useage ~32K/second, there would be these dropouts, and the audio would stop for .5-2 seconds.

The strange thing is that it's so regular. Exactly every N seconds. I'm looking for anyone else that can confirm or deny this. All you need is a transfer of two minutes to notice the pattern in a network monitor like taskmanager or analogx netstat live.

Once the backup is done, I'm going to mirror the to sets of drives.