![]() So maybe checking those 4K reads and writes will identify if a drive is SMR or PMR? I have a couple Seagate 4TB 2.5" drives I was going to use in a Bolt but never did as I read they were shingled and people were mostly getting the flashing lights error. A bit more than 10x difference write/read. 6xx MB/s and all three 4K writes were 7.xxx MB/s. And sure enough, all three 4K reads were. I ran Crystal Disk Mark on it (hooked up through USB 3.0, I never removed the drive from the enclosure as I knew it was shingled). ![]() Which is shingled though does not say that specifically in the specs as far as I could find. Really getting confusing, at least for me.Īs for my 4TB drives, I also checked an 8TB Seagate USB Hub I use for Tivo backups. And I THINK I've seen some "enterprise" drives from other companies that were shingled. Random Read 4KiB (Q= 1,T= 1) : 0.589 MB/s Random Write 4KiB (Q= 1,T= 1) : 1.339 MB/s Ĭlick to expand.I kind of figured that, however I think they are called "enterprise" drives. I THINK the DM004s are SMR, I THINK, the DM000/DM001/DM005 are PMR.ĬrystalDiskMark 6.0.0 Shizuku Edition 圆4 (C) 2007-2017 hiyohiyo Not sure if that is a valid test, can anyone tell if these are PMR or SMR based on these results? I saw some tests on an 8TB SMR Seagate where those 4K writes were almost 10x the reads (the Q1 T1 random write was 6.xxx compared to like 0.5xx for the read.) Just FYI I have a DM000 I have been using in a Roamio Plus for a couple years now with no issues. Heard some of the 4K random writes can be a LOT higher than the corresponding reads if a drive is SMR. ![]() I found this out from a YouTube video by JDMWAAT published on titled 'Western Digital Easystore 8TB (WD Red inside) unboxing and shucking. The Thailand drives have a 256mb cache and the China ones are allegedly only 128mb. The other is a Barracuda (not "compute"), model 4000DM005. Be sure you get the drive manufactured in Thailand not China. One is a "desktop" type, model 4000DM000. If you want to shuck the drives in a non destructive way (e.g.Am curious, have two Seagate 4 TB drives I purchased to put into Tivos eventually. Also some more info on different drive types.Īlso this video as a complement to the one Chris Moore posted (thanks again :)) for all "shuckers" ) (it's about the 10GB version but helpful too) Jails: running 1 iocage jail (Plex) using danb35's script:Īdditional NIC: MELLANOX 10GB CONNECTX2 - MNPA19-XTR Take a look here: A post with Links to useful threadsįound a very good WD Easystore 8TB Compendium regarding very many aspects. Vdev-1 = 4 x 6 TB drives in RAID-z1 (4 WD Gold drives - WD6002FRYZ)īoot pool: 1 vdev with 2 x 40 GB notebook drives in mirror (2 drives total - FUJITSU MHW2040BS) Vdev-0 = 4 x 6 TB drives in RAID-z1 (4 WD Gold drives - WD6002FRYZ) Vdev-1 = 6 x 4 TB drives in RAID-z2 (6 Seagate Exos drives - ST4000NM0115) Vdev-0 = 6 x 4 TB drives in RAID-z2 (6 Seagate Exos drives - ST4000NM0115) Vdev-1 = 6 x 4 TB drives in RAID-z2 (6 Seagate Desktop drives - ST4000DM000-1F2168) Vdev-0 = 6 x 4 TB drives in RAID-z2 (6 Seagate Desktop drives - ST4000DM000-1F2168) HBA: LSI/Broadcom SAS9207-8i, 6Gbps SAS PCI-E 3.0 HBA - flashed to IT Firmware: 20.00.07.00Ĭonnected to: two 6Gb/s 24-port 3.5" mini-SAS expander backplanes (80H10024001A0) I didnt know the 8tb MyBooks are white label red drives too. ![]() Lower capacities will be WD Blue, and not NAS-class drives. (and My Books) will be - they are white labelled but the same as the red ones. 128 GB of 16GB sticks Samsung brand PC3-12800R, DDR3 Registered ECC Are the WD Easystore drives at Best Buy all schuckable to put in my NAS. Processor: Intel Xeon E5-2650 V2, 2.6GHz 8 Core (16 thread) System board: SuperMicro Motherboard X9SRL-F, LGA 2011/Socket R, IPMI For a home NAS, this chassis is huge, able to hold 48 data drives and two boot drives with a couple spaces internally for non-hot-swap drives. The three pools in this one system represent the three NAS systems I had before the consolidation. I have even put together some hardware just to test things out a time or two.įor a while I had three systems, all at once, at home but I am making some hardware changes right now and only one NAS is online. I made some mistakes along the way, learned some and I try to share some of those lessons learned experiences here in the forum. This is the 8th FreeNAS unit I have built for home. This one was built in 2018, but I reused the name from a previous build.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |