NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
Solved
RN316 ESATA port speed
Hi there! I was wondering what the eSATA port speed is on the RN3xx series is. It doesn't state what speed it is in the hardware guide, so I'm guessing that it's SATA1 - 1.5Gbit, but I wanted to confirm.
I see this in my logs:
ata7.00: SATA link up 3.0 Gbps (SStatus 123 SControl 320)
ata7.01: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata7.02: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata7.03: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata7.04: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata7.05: SATA link up 1.5 Gbps (SStatus 113 SControl 320)
ata7.15: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
ATA7.00-04 I believe are my disks (HGST HUH721010ALE601) in the EDA-500.
ATA7.05 and ATA7.15 I'm sure are the eSATA port and the other possibly maybe a SES (SCSI Enclosure Services) chip. I just don't know which is which.
I believe the eSATA speed is SATA2 (3Gb) -- it is on a 516. But with an EDA500, it's multiplexed out to 5 drives, so the effective speed is far less.
3 Replies
Replies have been turned off for this discussion
I believe the eSATA speed is SATA2 (3Gb) -- it is on a 516. But with an EDA500, it's multiplexed out to 5 drives, so the effective speed is far less.
Thanks SS. I was hoping that it was. I'm currently going through a disk rebuild, and it's doing about 25MB/s. There are a bunch of other things using the disks too (like ReadyDR backing up the data on there), so I'm not entirely surprised by the rebuild speed.
/home/admin# cat /proc/mdstat Personalities : [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] md1 : active raid10 sdf2[5] sde2[4] sdd2[3] sdc2[2] sdb2[1] sda2[0] 1566720 blocks super 1.2 512K chunks 2 near-copies [6/6] [UUUUUU] md126 : active raid5 sdl3[7] sdg3[6] sdk3[8] sdj3[9] sdi3[5] 39046348288 blocks super 1.2 level 5, 64k chunk, algorithm 2 [5/4] [U_UUU] [=====>...............] recovery = 29.4% (2873515392/9761587072) finish=5058.6min speed=22693K/sec md127 : active raid6 sda3[0] sdf3[5] sde3[4] sdd3[3] sdc3[2] sdb3[1] 31236703232 blocks super 1.2 level 6, 64k chunk, algorithm 2 [6/6] [UUUUUU] md0 : active raid1 sdl1[20](W) sda1[14] sdg1[19](W) sdi1[13](W) sdj1[10](W) sdk1[11](W) sdf1[17] sde1[16] sdd1[12] sdc1[15] sdb1[18] 4190208 blocks super 1.2 [11/11] [UUUUUUUUUUU] unused devices: <none>And the CPU is pretty backed up, but does still have some idle cycles.
/home/admin# top top - 09:57:02 up 17 days, 4:06, 1 user, load average: 8.52, 8.95, 8.79 Tasks: 276 total, 3 running, 273 sleeping, 0 stopped, 0 zombie %Cpu(s): 12.2 us, 42.8 sy, 0.0 ni, 24.3 id, 15.7 wa, 0.0 hi, 5.1 si, 0.0 st KiB Mem: 2032656 total, 1947168 used, 85488 free, 1220 buffers KiB Swap: 1566716 total, 72 used, 1566644 free. 1370356 cached Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 8287 root 20 0 50276 4228 2028 R 84.0 0.2 613:48.09 ssh 8291 root 20 0 24000 1304 1124 R 69.9 0.1 499:33.88 btrfs 1640 root 20 0 0 0 0 S 24.4 0.0 1105:25 md126_raid5 8281 root 20 0 57956 3752 2068 S 21.4 0.2 148:57.96 replisync 1933 root 20 0 0 0 0 S 7.9 0.0 3:44.07 kworker/u8:0 668 root 20 0 0 0 0 S 5.9 0.0 1251:26 kswapd0 9573 root 20 0 0 0 0 S 5.6 0.0 0:39.48 kworker/u8:3 17173 root 39 19 0 0 0 D 5.6 0.0 135:24.56 md126_resync 10668 root 20 0 0 0 0 S 5.3 0.0 0:14.08 kworker/u8:1 11016 root 20 0 28932 3276 2568 R 1.0 0.2 0:00.08 top 10334 root 20 0 0 0 0 S 0.7 0.0 0:30.20 kworker/u8:6 10990 admin 20 0 156120 7248 4196 S 0.7 0.4 0:00.02 apache2 3 root 20 0 0 0 0 S 0.3 0.0 50:15.47 ksoftirqd/0 13 root 20 0 0 0 0 S 0.3 0.0 49:59.46 ksoftirqd/1I wonder if upgrading memory from 2GB to 4GB would have much of an impact on operations like this (in general to RAID rebuilds). I know the eSATA link is probably the bigger bottleneck, but I can't really do much about that currently.
Sync and scrubs on an EDA500 are abysmally slow due to the eSATA multiplier architecture. I ultimately retired both my 516 and EDA500 in favor of a 12-bay rack-mount unit (you can just move all the drives), but that's not an option for everyone, given the size and fan noise.
NETGEAR Academy
Boost your skills with the Netgear Academy - Get trained, certified and stay ahead with the latest Netgear technology!
Join Us!
