11/19/2023 0 Comments Sas drives![]() ![]() Now that PCI-e NVMe drives and adapters for them have gotten cheap, folks who want performance go NVMe, which beats both SAS-4 (if those drives ever reach the marketplace) and SATA-III. Although the platter speed is double that of SATA, the MTBF (Mean Time. While typical SATA drives operate at 7200RPM, a SAS drive operates at 10K or 15K. SAS drives are getting lost in the dust of PCIe/MVMe drives for servers, which are far superior. Basically, a SAS drive utilizes the same form factor as a SATA drive but has several high performance advantages. Unfortunately I just don't know, as my perception of the market is not accurate without actually being a part of it. Maybe the reason I'm seeing old drives is because I only need small capacity drives - 4 TB, which SAS drives could've passed years ago. Now, that server also supports PCIe drives, which are vastly superior. I've just ordered some WD Gold drives - I'm not looking for a product recommendation, but can someone explain why, according to those guides, the WD gold drives would be vastly inferior to any SAS. SAS drives don't sell as rapidly as SATA-III, since they won't work in a desktop PC unless a special controller is added. I've never worked in a professional server environment, but SAS seems to be outdated - looking on Amazon, Google or eBay for SAS drives results in seeing things manufactured in 2015. More reliable? Well, SAS drives, being server-only, are built to a higher spec than your consumer grade SATA drive, but a SATA-III server drive should not be any less reliable than a server-grade SAS drive. Only server farm operators care enough to buy the spendier SAS drives, which BTW require a SAS capable controller. ![]() SAS-3 drives are capped at a theoretical output of 12 Gb/sec, and SAS-4 drives will peak at 22.5 Gb/sec. A 300GB 2.5 15K SAS drive will smoke a 1TB 7200 SATA drive simply because it has about. ![]() effects drive performance as much or more than bandwidth. SATA-III drives are capped at a theoretical output of 600 MB/sec or 6 Gb/sec. Factors like spindle speed, density, latency etc. When googling 'SAS vs SATA' and the like, you get a lot of results that imply or directly state that SAS drives are always faster and always more reliable than SATA drives. You use a hard drive tray or caddy or sled, and simply slide and clip the drive into the front of your server. SAS / Serial Attached SCSI Hard Drives 2.5" SFF & 3.5" LFF are almost exclusively for usage in servers that use hot swappable (hot-swap) drives with a SAS hot pluggable backplane. So unless the warning I got said 'SAS drives and ZFS cause problems' and not 'you wouldnt gain much of anything with SAS on ZFS', Im willing to go on with this. If you are looking to buy Dell Hard Drives or Dell SSD Kits, please visit this link Dell Hard Drives & Dell SSD Kits ![]()
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