Synology Diskstation short very slow with OSX

I use synology diskstation for 2 years and have never really found it to be very slow when it is connected to my mac pro retina book.

Plug NAS...

Synology NAS Office DS213J Bay 2 enclosure £159.99

Red WD 3 TB for NAS 3.5 inch desktop hard drive - OEM £89.00

3 TB Seagate 3.5 inch 7200 RPM 64 MB Cache hard SATA3 £89.99

2 drives installed - 1 set up in mirror

I measured the speeds and get 3 MB/s reading and writing on wi fi. Direct connection to a gigabit switch that directly relates to NAS both via CAT6 - makes about 35 MB/s reading and 50 MB/s in writing.

I read a review that has measured the same device and got a 74.5 MB/s write speed and a 56.4 MB/s read speed

When you run windows in bootcamp on the same machine, I get much better performance.

I tried to remove a drive (speed tests are the same for each single drive)

10.11.2 running OSX


Is there a particular issue or the goal or the question you are interested in here?   It is clear that you are looking for performance and a few comparisons, but it's not clear (to me) where you're going with this.  Can also check with Synology people, too.

A few generic comments follow...

In general...  A Wi - Fi connection is slow, and Wi - Fi with interference makes even slower connections.      Descent and with a tailwind, I expect a little more than 200 Mbps (megabits per second, not megabytes) with semi-recent-grade Wi - Fi 5 GHz dual-slot, assuming a backhaul wired on the gigabit NAS and assuming no interference from Wi - Fi or claim.

Rusty storage rotation is slow and subject to the configuration.

Red WD appears without RPM - "Intellipower", with some comments showing a player ~ 5400 RPM, which is quite slow and at no time access in the technical sheets.  If a seller do not post access time and transfer speeds for a disk drive, the device is not intended to be a particularly fast device.  WD indicates both in the note on the sheet, too.

For most RAID controllers, RAID-1 mirror means the two Scriptures - written to each disk in the mirror game - must fill in before the host i/o is complete.   This slows down the write speed.   If the RAID controller is intelligent - and not all RAID controllers are very smart, then it will give you the first available reading rates from the game of mirror, based on the position of rotation.  Many will just take a drive and give you the e/s as the sector turns around, so you will be waiting on average a demi-revolution.

If you want a faster access to the storage, stay off WiFi and use two SSD storage or upgrade these disks to 15 K RPM disks configured as a RAID 0 striped.   High-end and storage gear company - the older, hard-disk-based - gets its performance to have zillions of small discs of 15 K RPM configured with disk and controller wholesale large caches, controllers (by rotation-aware) smart and with RAID 10 storage configurations or similar.

To compare the performance of the device, the configuration of these benchmarks and what you are testing is important.  Reference material, as well as the speeds measured since the test of Windows.

Tags: Mac OS & System Software

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