Seagate ST31500341AS 1.5TB

I bought 4 from newegg, they came in today with CC1J.

One does the CLUNK CLUNK game... Oddly, it stopped that during the walk to get coffee, but it has a high number of sector relocation.

I'm now testing the rest in seatools, one is up to 86 "errors" so far. The other I just built a pc to check it, the other I will test tomorrow.

Overall I'm very irritated. The only seagate drives I've ever purchased, were the 4x 400's I bought for the readynas (on the HCL). I lost one of those, so 2 out of 4 on these doesn't make me feel good. Back to dependable WD I go.

I'm most likely going to have them refund me, and pick up a set of those new WD green's with the 32mb cache.

Now only if WD can get a 1tb+ drive out there...

Gotcha. My NV (non plus) with 4x 750GB hits about 40/sec right now over gigabit. I guess this is why I'm setting up the new one from scratch before migrating anything over. I really don't want to have to stick with the 750GB's until the 1.5+ drives get ironed out.[/quote]

I didn't migrate anything over. I bought a brand new nv+ immediatly installed 2x 1.5TB drives and transfered all my data over.

Write speed on the Seagates drives maxes out at 23MiB/sec and this can be accomplished by two large data transfers running at the same time. (all performance settings on except jumbo frames) used to get 40MiB/sec on another readynas with two 500GiB drives...

That is why I hope they release new firmware to increase performance.
Wonder why nobody else notices this? Did nobody test the transfer speed on their new drives in their Readynas???

My RAID rebuilds on 2 1.5Tbs at over 60MB/sec, so it doesn't seem to be the drive itself. I have not done any perf tests against the completed array yet though.

xsnrg wrote:
My RAID rebuilds on 2 1.5Tbs at over 60MB/sec, so it doesn't seem to be the drive itself. I have not done any perf tests against the completed array yet though.

The Rsync in my NV+ also averaged around 100 - 60 MiB/sec I was happy with that, because rsync didn't take that much time.
But now transfering to or from the Readynas maxes out at a stable 20-23MiB/sec.

Can you test your transfers speeds too when you have the chance? Which firmware is on your drives? Mine have CC1H.

Kind regards
Jellen

I can, but the only way it will have any meaning is if you document what your exact settings are, method of transfer for testing, and network equipment

Ok

So I have an NV+ (stock ram) with 2x Seagate 1.5TB FW. CC1H configured for optimal mode http://www.readynas.com/?p=310 EXCEPT! jumbo frames is NOT enabled!
D-link DGL-4300 gigabit router FW. 1.9

Connected the NV+ to the router with the UTP cable that came with it.

1. Wired P4 XP SP3 Pro system (configured with raid 0 drives) with D-Link DGE-528T network card (capable of jumbo frames) connected with patch6 cable to the router.

2. Wired notebook Dell Latitude E6500 Vista SP1 Business with Intel Gigabit nic. Also connected with Patch6 UTP cable.

On both these systems I get identical results when I do a 'drag and drop' transfer to a Readynas share.

A 13GiB file .avi or .mkv transfer or two of these files to get max transfer speed of 23MiB/sec

Transfer rates are monitered by DU Meter http://www.dumeter.com
As I said before on the same network config with the same devices except a Readynas Duo with 2x 500 GiB Seagate drives I got an average transfer rate of 40MiB/sec.

Extra remark: the transfer on these new drives remains at a constant of 20-23 MiB/sec there is no difference with different file sizes.

If you want more information, just ask :-)

Kind regards
Jellen

I have 4x 1.5 TB drives in my Readynas NV. I don't have jumbo frames enabled. Copying to / from a Vista desktop I see 18 MB/s write speed and 36 MB/s read speed. The write isn't that surprising to me because it was about the same with the 4x 750 GB drives. The read speed is much higher than I was expecting. I don't remember seeing that kind of speed without jumbo frames.

Jellen, did you go from a 2x drive configuration to a 3 or more drive configuration? You may have seen better write speeds because before you were just mirroring data. With 3 or more drives, there will have to be a parity calculation, which could explain the slowdown. The readynas might be faster with mirroring only...

phrozen wrote:

I have 4x 1.5 TB drives in my Readynas NV. I don't have jumbo frames enabled. Copying to / from a Vista desktop I see 18 MB/s write speed and 36 MB/s read speed. The write isn't that surprising to me because it was about the same with the 4x 750 GB drives. The read speed is much higher than I was expecting. I don't remember seeing that kind of speed without jumbo frames. Jellen, did you go from a 2x drive configuration to a 3 or more drive configuration? You may have seen better write speeds because before you were just mirroring data. With 3 or more drives, there will have to be a parity calculation, which could explain the slowdown. The readynas might be faster with mirroring only...

It is mirroring only, my previes Readynas was a Duo with two 500GB drives (Seagate) X-raid

Fresh new NV+ with two 1.5TB (also X-Raid, or mirroring) and I see only half the throughput speed of the duo with its 500GB drives..

Read speed is around 27MiB/Sec on those drives (maybe faster in a 4x system)

Kind regards
Jellen

Jellen wrote:

phrozen wrote: I have 4x 1.5 TB drives in my Readynas NV. I don't have jumbo frames enabled. Copying to / from a Vista desktop I see 18 MB/s write speed and 36 MB/s read speed. The write isn't that surprising to me because it was about the same with the 4x 750 GB drives. The read speed is much higher than I was expecting. I don't remember seeing that kind of speed without jumbo frames. Jellen, did you go from a 2x drive configuration to a 3 or more drive configuration? You may have seen better write speeds because before you were just mirroring data. With 3 or more drives, there will have to be a parity calculation, which could explain the slowdown. The readynas might be faster with mirroring only... It is mirroring only, my previes Readynas was a Duo with two 500GB drives (Seagate) X-raid Fresh new NV+ with two 1.5TB (also X-Raid, or mirroring) and I see only half the throughput speed of the duo with its 500GB drives.. Read speed is around 27MiB/Sec on those drives (maybe faster in a 4x system) Kind regards Jellen

I think the duo might be faster than the NV? Have you tried the 500 GB drives in the NV or the 1.5 TB drives in the Duo?

No the Readynas Duo isn't available anymore at this location. So I can't swap drives.
Normally you should get same results, both same hardware (processor and ram) with same software configuration.
Pretty sure it's because of the 1.5TB drives.
I hope someone else can also test transfer rates on their 1.5TB drive config.

Kind regards
Jellen